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My Car Simply Won't Run Any suggestions?

#1 User is offline   blown_volvo850r Icon

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Posted 26 December 2004 - 08:02 PM

My car won't run...it will start but it's missing like crazy. Holding throttle clear to 4500rpm, it misses, stays under 1000rpms, flares up, then comes back down. Normally I'd say it's the MAF sensor...I'm getting that 3" M3 MAF taken out and the stock 2.5" put in very soon, it's gone bad anyway. This has happened before, but not like this. I reset the ECU, and now it's even popping. I watched the boost gauge and it would jump from clear vacuum to about 1psi, just a very fluttery bit. It's just not running at all...we're getting the MAF sensor switched out...but I'm just wondering if anyone has an idea of any other problems. EGR valve probably needs changing as well. The check engine light isn't on, so no plug misfiring. It's not the distributor cap, after I reset the ECU it ran fine for about a minute, no missing or anything. Afterward tho it started missing and bogging again. Any ideas? Thanks

~Lee
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#2 User is offline   blown_volvo850r Icon

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Posted 27 December 2004 - 07:52 PM

Come on I know someone can help me out here...Rob, Doug, Joe, Bill, anyone?

~Lee
1997 850 R sedan...got me a brand new license plate.

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#3 User is offline   JHEIII874T5M Icon

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Posted 27 December 2004 - 08:38 PM

going out on a limb... o2s? does it idle fine?
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#4 User is offline   blown_volvo850r Icon

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Posted 27 December 2004 - 08:40 PM

QUOTE(JHEIII850Turbo @ Dec 27 2004, 03:38 PM)
going out on a limb... o2s? does it idle fine?
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No, it's sounds like it's choking on an idle...serious bogging down.

~Lee
1997 850 R sedan...got me a brand new license plate.

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#5 User is online   BlackT5 Icon

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Posted 27 December 2004 - 10:01 PM

also going out on a limb... all your IC piping connections tight?

When I first got my car back, idle was terrible and when i put my foot on the gas, it stumbled, and choked. They failed to connect my top IC hose. I know they can pop off very easily under high boost.
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#6 User is offline   blown_volvo850r Icon

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Posted 27 December 2004 - 10:34 PM

QUOTE(850Ridah @ Dec 27 2004, 05:01 PM)
also going out on a limb... all your intercooler piping connections tight?

When I first got my car back, idle was terrible and when i put my foot on the gas, it stumbled, and choked. They failed to connect my top intercooler hose. I know they can pop off very easily under high boost.
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Yeah...I checked everything, I've blown intercooler piping off all over the place...TB/intercooler pipe, turbo charge pipe, everything. I'll double check it tho.

~Lee
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#7 User is offline   WhiteT5 Icon

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Posted 27 December 2004 - 10:58 PM

IAC Valve?
- Sean
-'95 850 T5 White/Tan (SOLD) // '92 244 5-spd White/Blue // '04 Saab 9-5 Aero Sportcombi 5-spd Navy/Black/Carbon
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#8 User is offline   blown_volvo850r Icon

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Posted 27 December 2004 - 11:05 PM

QUOTE(White850T5 @ Dec 27 2004, 05:58 PM)
IAC Valve?
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Where's it located?

~Lee
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#9 User is offline   WhiteT5 Icon

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Posted 27 December 2004 - 11:12 PM

It's the little cylindrical silver thing up near the intake manifold. It has an electrical connection that plugs into it and has a hose running out of each side. Try cleaning it.

This post has been edited by White850T5: 27 December 2004 - 11:12 PM

- Sean
-'95 850 T5 White/Tan (SOLD) // '92 244 5-spd White/Blue // '04 Saab 9-5 Aero Sportcombi 5-spd Navy/Black/Carbon
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