I own a 98 S70 T5 Automatic and have had this problem for a while. Now that the warm weather is finally here, I want to run the car a little harder.
Problem: Under hard acceleration, from a standing start or when trying to merge or pass on the highway, when I reach about 4500+ RPM the engine either struggles to accelerate faster or cuts out.
When it cuts out, it is quite a shock because with the sudden loss of power, it feels like I have run into a curb. The engine does not shut off when this happens. Once it cuts out, I have to let off the gas and once I step on the gas again the power comes back.
This doesn't happen every time but it seems to happen when I need the power the most such as merging onto highways or trying to pass other cars at highway speed.
Service Info:
Regular air filter changes(I use Paper Filters - Have tried K&N with same problem)
August 2004 - New Plugs, Wires, Rotor
September 2004 - Throttle Body cleaning and new gasket
October 2004 - Vehicle in to Volvo for service. They found a twisted vacuum hose and untwisted it. The problem was resolved for 3 days and then returned.
November 2004 - Fuel filter replaced
The air pump is faulty (Buzzes every once in a while and throws a code).
I'm not sure if the air pump could cause this problem but I could be wrong.
Could it be MAF related or Transmission related? HELP!
I am looking for any suggestions. Any info is appreciated. Sorry for the long post.
Engine Cuts Out Under Hard Acceleration
Started by
Guest_Guest_.Red Brick with Boost._*_*
, Apr 20 2005 07:12 PM
19 replies to this topic
#1 Guest_Guest_.Red Brick with Boost._*_*
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Posted 20 April 2005 - 07:12 PM
#2
nedro018
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Posted 20 April 2005 - 08:21 PM
"Regular air filter changes(I use Paper Filters - Have tried K&N with same problem)
August 2004 - New Plugs, Wires, Rotor
September 2004 - Throttle Body cleaning and new gasket
October 2004 - Vehicle in to Volvo for service. They found a twisted vacuum hose and untwisted it. The problem was resolved for 3 days and then returned.
November 2004 - Fuel filter replaced"
detailed post, however, when did the problem begin? this is tantamount. you say in Oct 2004 that "problem was resolved for 3 days and then returned", so it was before this? was it before the TB cleaning? was it before your plugs, wires, rotor?
there's some sharp people in this place so you have to help them help you. for example, what brand of plugs/wires/rotor? if the problem started after this, no need to look at the rest of the changes.
do you have codes? have you cleared them at all?
if you dont have codes, and if none of your above changes are related to the problem at all, then fuel delivery and vacuum problems come to mind, for me. because, the symptom occurs at max demand.
give more info as per above, im certain you'll get answers. good luck!
August 2004 - New Plugs, Wires, Rotor
September 2004 - Throttle Body cleaning and new gasket
October 2004 - Vehicle in to Volvo for service. They found a twisted vacuum hose and untwisted it. The problem was resolved for 3 days and then returned.
November 2004 - Fuel filter replaced"
detailed post, however, when did the problem begin? this is tantamount. you say in Oct 2004 that "problem was resolved for 3 days and then returned", so it was before this? was it before the TB cleaning? was it before your plugs, wires, rotor?
there's some sharp people in this place so you have to help them help you. for example, what brand of plugs/wires/rotor? if the problem started after this, no need to look at the rest of the changes.
do you have codes? have you cleared them at all?
if you dont have codes, and if none of your above changes are related to the problem at all, then fuel delivery and vacuum problems come to mind, for me. because, the symptom occurs at max demand.
give more info as per above, im certain you'll get answers. good luck!
1995 850 GLT, Bilstiens and new springs/HD-towing in rear
#4
theunderlord
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So old school, you don't even know...
Posted 20 April 2005 - 09:46 PM
http://volvospeed.com/vs_forum/index.php?showtopic=20410
now, i know that 98 70 series is motronic 4.4... BUT... the above link is still really really good reading... your "running into a curb" is called "fuel cut." Check it out.
now, i know that 98 70 series is motronic 4.4... BUT... the above link is still really really good reading... your "running into a curb" is called "fuel cut." Check it out.
07.5. 3500HD SRW. LMM. LT. CCLB. 4x4. Pioneer DVD. JL Audio. Rockford Fosgate. Subthump. Katzskin Interior. Fab Fours Front Bumper. Reese Class V. 6K HID. 20% Tint. Bushwacker. Smoked Recon LED Taillights & Third Brake Light. US Speedo Gauge Overlay. Colormatched Vent Visors/AVS Bug Deflector/Door Handles. Black NFab Bars. LineX. 6" Tuff Country Lift. 325/60-20 Nitto Terra Grapplers. KMC XD Black Rockstars. 20"x10" -24 offset 4.56" BS. PCV Re-Route. Banks Boost Tube. AFE PG7. Edge CTS Race. 4" Silverline Downpipe Back Exhaust. 5" MBRP Tip.
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To Install/On Order: Banks Intercooler, AirDogII DF-165, Fab Fours Rear Bumper, Diamond Eye Downpipe.
#5
emmick
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Posted 21 April 2005 - 01:04 AM
It kind of sounds like what my car does right about 6,800 rpms. 
#6 Guest_Guest_.Red Brick with Boost._*_*
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Posted 21 April 2005 - 05:03 AM
QUOTE(nedro @ Apr 20 2005, 08:21 PM)
so it was before this? was it before the TB cleaning? was it before your plugs, wires, rotor?
there's some sharp people in this place so you have to help them help you. for example, what brand of plugs/wires/rotor? if the problem started after this, no need to look at the rest of the changes.
do you have codes? have you cleared them at all?
if you dont have codes, and if none of your above changes are related to the problem at all, then fuel delivery and vacuum problems come to mind, for me. because, the symptom occurs at max demand.
give more info as per above, im certain you'll get answers. good luck!
there's some sharp people in this place so you have to help them help you. for example, what brand of plugs/wires/rotor? if the problem started after this, no need to look at the rest of the changes.
do you have codes? have you cleared them at all?
if you dont have codes, and if none of your above changes are related to the problem at all, then fuel delivery and vacuum problems come to mind, for me. because, the symptom occurs at max demand.
give more info as per above, im certain you'll get answers. good luck!
Thanks for the suggestions. Here is a little more info...The problem started before the TB cleaning and before the plugs, wires and rotor(All parts are Volvo parts directly from the dealer). All of this work was done to try and fix the problem.
The battery was replaced earlier in 2004 and the problem appeared shortly after the battery was replaced. I mention this only now because I have heard from one other person since posting this message that has experienced the same thing shortly after replacing their battery. I would never have thought that a battery exchange could have an influence on a problem like this. I'm ready to look at anything at this point.
I have had codes. They have all been cleared. I don't have exact code numbers, however some codes did refer to misfires in all cylinders(Possibly caused by the engine stopping for a split second?), the air pump(Expected), and also the wastegate.
Just to make you aware, I have made no modifications to the engine and have not altered any factory settings such as the wastegate.
I experienced the problem again today while trying to merge onto the highway. It was quite a violent surge and there was a strong Catalytic smell inside the car after it happened. Could this be due to the dumping of fuel during the loss of power?
I hope this is enough info. Thanks Nedro.
I did read the post by EricF. It's reassuring to know that there are more people who are experiencing this. If we can figure this out, at least people will know what to look for if they ever experience the same problem.
I'd love to hear other opinions on this...Thanks for your help.
by the way anyone in the Toronto/Hamilton area going to the Waterdown Meet in May?
#7 Guest_Guest_kwc_*_*
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Posted 21 April 2005 - 08:17 PM
QUOTE(Guest_kwc_* @ Apr 21 2005, 08:12 PM)
I am following you around to see if anybody comes up with a solution to the "fuel out" problem. So far it seems to be more R&R. I can make my problem occur almost whenever I want to demonstrate it to a mechanic. So far no ideas. The next step will be to have all the sensors changed until something accidently fixes it. I hope somebody is reading are messages and comes up with a solution.
#8 Guest_Guest_tom_*_*
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Posted 21 April 2005 - 11:10 PM
QUOTE(Guest_kwc_* @ Apr 21 2005, 08:17 PM)
I am following you around to see if anybody comes up with a solution to the "fuel out" problem. So far it seems to be more R&R. I can make my problem occur almost whenever I want to demonstrate it to a mechanic. So far no ideas. The next step will be to have all the sensors changed until something accidently fixes it. I hope somebody is reading are messages and comes up with a solution.
CHECK YOUR FUEL PUMP. I HAD THIS PROBLEM A COUPLE OF YEARS BACK WHEN I HAD INSTALLED AN AFTERMARKET CHIP IN MY CAR AND IT NEEDED MORE FUEL FOR HARDER ACCELERATION AND THE OLD FUEL PUMP WAS NOT ABLE TO DELIVER. I HAVE AN AUTO TRANNY. IN ECON MODE WASN'T NOTICEABLE BUT MORE NOTICEABLE IN SPORT.
SO CHECK YOUR FUEL PUMPS!!!!!!!!
#9
ToxicLemonade
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Posted 21 April 2005 - 11:13 PM
QUOTE(Guest_.Red Brick with Boost._* @ Apr 20 2005, 07:12 PM)
I own a 98 S70 T5 Automatic and have had this problem for a while. Now that the warm weather is finally here, I want to run the car a little harder.
Problem: Under hard acceleration, from a standing start or when trying to merge or pass on the highway, when I reach about 4500+ RPM the engine either struggles to accelerate faster or cuts out.
When it cuts out, it is quite a shock because with the sudden loss of power, it feels like I have run into a curb. The engine does not shut off when this happens. Once it cuts out, I have to let off the gas and once I step on the gas again the power comes back.
This doesn't happen every time but it seems to happen when I need the power the most such as merging onto highways or trying to pass other cars at highway speed.
Service Info:
Regular air filter changes(I use Paper Filters - Have tried K&N with same problem)
August 2004 - New Plugs, Wires, Rotor
September 2004 - Throttle Body cleaning and new gasket
October 2004 - Vehicle in to Volvo for service. They found a twisted vacuum hose and untwisted it. The problem was resolved for 3 days and then returned.
November 2004 - Fuel filter replaced
The air pump is faulty (Buzzes every once in a while and throws a code).
I'm not sure if the air pump could cause this problem but I could be wrong.
Could it be MAF related or Transmission related? HELP!
I am looking for any suggestions. Any info is appreciated. Sorry for the long post.
Problem: Under hard acceleration, from a standing start or when trying to merge or pass on the highway, when I reach about 4500+ RPM the engine either struggles to accelerate faster or cuts out.
When it cuts out, it is quite a shock because with the sudden loss of power, it feels like I have run into a curb. The engine does not shut off when this happens. Once it cuts out, I have to let off the gas and once I step on the gas again the power comes back.
This doesn't happen every time but it seems to happen when I need the power the most such as merging onto highways or trying to pass other cars at highway speed.
Service Info:
Regular air filter changes(I use Paper Filters - Have tried K&N with same problem)
August 2004 - New Plugs, Wires, Rotor
September 2004 - Throttle Body cleaning and new gasket
October 2004 - Vehicle in to Volvo for service. They found a twisted vacuum hose and untwisted it. The problem was resolved for 3 days and then returned.
November 2004 - Fuel filter replaced
The air pump is faulty (Buzzes every once in a while and throws a code).
I'm not sure if the air pump could cause this problem but I could be wrong.
Could it be MAF related or Transmission related? HELP!
I am looking for any suggestions. Any info is appreciated. Sorry for the long post.
spark plugs, most likely. im having the same problems. try gapping to .028
Yellow 5 speed T5-R
#10
1black850r
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Posted 21 April 2005 - 11:29 PM
If you can put the car in a very dark garage and see if the coil is arking on the sides.Rev it a few times Ibet it is!
#11
ToxicLemonade
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Posted 21 April 2005 - 11:30 PM
QUOTE(1black850r @ Apr 21 2005, 11:29 PM)
If you can put the car in a very dark garage and see if the coil is arking on the sides.Rev it a few times Ibet it is!
what you mean? im having the same problems. what if the coil is arcing?
Yellow 5 speed T5-R
#12
1black850r
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Posted 21 April 2005 - 11:37 PM
I'll do my best to try to explaine this.
The coil has those laminated plates that it's mounted to mine was arking ever so lightly at a idle in the pitch dark,when I would get full boost it always felt like some light missfiring like the ecu was pulling timing and if I kept it floored I would get fuel cut.hard to explaine.Just make sure you check it's easyenough.
The coil has those laminated plates that it's mounted to mine was arking ever so lightly at a idle in the pitch dark,when I would get full boost it always felt like some light missfiring like the ecu was pulling timing and if I kept it floored I would get fuel cut.hard to explaine.Just make sure you check it's easyenough.
#13
MrWinkey
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Am I drunk? You tell me!
Posted 21 April 2005 - 11:51 PM
Just mist the coil with water. if it's archin' you'll see it
"SMOKE TROUT NOT CRACK"
#14
MrWinkey
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Am I drunk? You tell me!
Posted 21 April 2005 - 11:58 PM
You may want to also replace the pump and injector relays?...does the problem seem more dominate when hot? and does the car stall and have a hard restart sometimes. But it really sounds ignition related...just some thoughts....also you mention rotor..I assume you replaced the cap as well?
"SMOKE TROUT NOT CRACK"
#15
nedro018
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Posted 22 April 2005 - 10:14 PM
so what's the status? just wondering, looks like several have your same problem; however, they dont seem to be sharing car model years with you.
i was out of town for a bit, returned to read your helpful posts. some point to fuel pump, others mention arcing coils. if your coil is arcing, maybe you could temp shield it (tight rubber wrapping) and test car on motorway (briefly!)
you never said how many miles on your 98? if it's 95K+, you may as well R2 the pump, relay, and filter. may fix it, may not. but you have to rule it out and if it's not the prob, you've performed correct maintainence anyway. about $240 in parts if you do the work...easy...look for VERY recent posts from Rich on R2'ing FP.
good luck,
ned
i was out of town for a bit, returned to read your helpful posts. some point to fuel pump, others mention arcing coils. if your coil is arcing, maybe you could temp shield it (tight rubber wrapping) and test car on motorway (briefly!)
you never said how many miles on your 98? if it's 95K+, you may as well R2 the pump, relay, and filter. may fix it, may not. but you have to rule it out and if it's not the prob, you've performed correct maintainence anyway. about $240 in parts if you do the work...easy...look for VERY recent posts from Rich on R2'ing FP.
good luck,
ned
1995 850 GLT, Bilstiens and new springs/HD-towing in rear
#16
feddeytx
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Posted 03 May 2005 - 04:23 PM
I have a 98 V70 GLT with 84k and am expierencing the same exact problem. I have the car at a indy shop as I type this and will let you all know what they find. I have lost a great deal of confidence in my wagon.
Love my Vagon. Rare black on black.
Mark
Any help on this matter would be greatly appreciated!!!
I have read the titronic 4.3 stuff. So do I just need to unhook my rear O2 sensor?
email me direct with any suggestions
feddeytx@yahoo.com
Love my Vagon. Rare black on black.
Mark
Any help on this matter would be greatly appreciated!!!
I have read the titronic 4.3 stuff. So do I just need to unhook my rear O2 sensor?
email me direct with any suggestions
feddeytx@yahoo.com
98 V70 GLT Black on Black.
#17
stm1up
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Posted 03 May 2005 - 05:02 PM
I was having the same problem as red brick explained with regard to boost cut out at xRPMs and re-throttling etc. I had two codes, one for the secondary air pump and one for wastegate solenoid malfunction. I had been resetting them for a while.
In my case, the air pump was full of water, when I disconnected the hose up to the check valve it was full of water too. I replaced the pump, check vlv and the relay two weeks ago and the cutout and choking problems as well as the CEL haven't happened since. I thought I had fuel pp or injector problems too but it looks like it may have all been water related, for now.
In my case, the air pump was full of water, when I disconnected the hose up to the check valve it was full of water too. I replaced the pump, check vlv and the relay two weeks ago and the cutout and choking problems as well as the CEL haven't happened since. I thought I had fuel pp or injector problems too but it looks like it may have all been water related, for now.
97R(mine)...97T5,(son has it now)...06 X5,(family vehicle)...94 855T, my daily dvr...
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99 Saab Aero sedan, daughters grad present. All black because that's the only color they all come in...
#18 Guest_Guest_.Red Brick with Boost._*_*
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Posted 03 May 2005 - 08:51 PM
I too am at my indy mechanic. We are currently checking a number of things out. I will post an update later this evening.
So far no arcing from the coil.
I do have the wastegate solenoid code and the airpump code. We are going to check the air pump and check valve for water.
Thanks to everyone who posted.
We're going to look at all suggestions.
Let's hope we solve it.
So far no arcing from the coil.
I do have the wastegate solenoid code and the airpump code. We are going to check the air pump and check valve for water.
Thanks to everyone who posted.
We're going to look at all suggestions.
Let's hope we solve it.
#19 Guest_Guest_*
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Posted 04 May 2005 - 06:52 PM
Well, no progress to speak of. I was actually in to have the strut mounts and bearings replaced ($850 later it rides much nicer now).
We did check the codes. Air pump, wastegate solenoid, and misfire codes came up.
I am booked back in with my mechanic on May 16. On that day he will go through all of the suggestions that everyone here has made.
We got as far as spraying the coil to check for arcing before we had to wrap things up for the day. No arcing was noticed.
Looking forward to the 16th to have this resolved. (Hopefully)
ANYONE HERE GOING TO THE WATERDOWN MEET ON MAY 29?
We did check the codes. Air pump, wastegate solenoid, and misfire codes came up.
I am booked back in with my mechanic on May 16. On that day he will go through all of the suggestions that everyone here has made.
We got as far as spraying the coil to check for arcing before we had to wrap things up for the day. No arcing was noticed.
Looking forward to the 16th to have this resolved. (Hopefully)
ANYONE HERE GOING TO THE WATERDOWN MEET ON MAY 29?
#20 Guest_Guest_.Red Brick with Boost._*_*
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Posted 04 May 2005 - 07:01 PM
QUOTE(Guest @ May 4 2005, 06:52 PM)
Well, no progress to speak of. I was actually in to have the strut mounts and bearings replaced ($850 later it rides much nicer now).
We did check the codes. Air pump, wastegate solenoid, and misfire codes came up.
I am booked back in with my mechanic on May 16. On that day he will go through all of the suggestions that everyone here has made.
We got as far as spraying the coil to check for arcing before we had to wrap things up for the day. No arcing was noticed.
Looking forward to the 16th to have this resolved. (Hopefully)
ANYONE HERE GOING TO THE WATERDOWN MEET ON MAY 29?
We did check the codes. Air pump, wastegate solenoid, and misfire codes came up.
I am booked back in with my mechanic on May 16. On that day he will go through all of the suggestions that everyone here has made.
We got as far as spraying the coil to check for arcing before we had to wrap things up for the day. No arcing was noticed.
Looking forward to the 16th to have this resolved. (Hopefully)
ANYONE HERE GOING TO THE WATERDOWN MEET ON MAY 29?
For some reason it didn't show this message was from me even after I logged in.
