Phil94850 Posted April 6, 2007 Report Share Posted April 6, 2007 i used seafoam on my car for the first time today and it worked great. the car is running alot better. I put it in the gas tank and put about a 1/4 bottle in the vac. tree. the car smoked like a train for a bit, but now she runs even better than before.I noticed though.... before using the seafoam my a/f gauge would always read high end of stoich or rich, after the seafoam now it reads from lean to rich, did it mess up my o2, or is that how it should be reading and it wasnt correct before the seafoam. Link to comment Share on other sites More sharing options...
Dmsee Posted April 6, 2007 Report Share Posted April 6, 2007 It should read normally maybe you have a vacuum leak Link to comment Share on other sites More sharing options...
Phil94850 Posted April 6, 2007 Author Report Share Posted April 6, 2007 it must have been just the seafoam running thru the system ... the a/f gauge is working fine now. That seafoam is excellent stuff, i can tell a difference in my car already. Its alot more responsive.. Link to comment Share on other sites More sharing options...
Dmsee Posted April 7, 2007 Report Share Posted April 7, 2007 I used seafoam too and it worked out great Hey when your Gauge showed the Lean or Rich did the CEL came on? Link to comment Share on other sites More sharing options...
Phil94850 Posted April 7, 2007 Author Report Share Posted April 7, 2007 no... it never did come on..as much as it was smoking i thought for sure it would throw a CEL Link to comment Share on other sites More sharing options...
greasefingers Posted April 7, 2007 Report Share Posted April 7, 2007 The output of the O2 sensor is a sinewave. It changes from 0.1 to 0.9 rapidly over seconds. So the ECU looks for an average value something like 0.45 volts. If the sensor drifts then the ECU will constantly record a lean or rich mixture. This is where a code can sometimes be thrown. If it stops working then it always throws a code or if it remains too high or too low.You can look at the O2 sensor as a fine tuning device for the air-to-fuel ratio. It is one factor the ECU uses to determine how long to hold the injectors open. The ECU does not use the O2 sensor input during warn-up, acceleration, or deceleration. It is only used during constant speed. This is why I call it a fine-tuning devise. Link to comment Share on other sites More sharing options...
Guest 850T-5 Posted April 7, 2007 Report Share Posted April 7, 2007 Probably just some sort of temporary after effect from running the Seafoam through. Maybe it just needed some time to burn off of the O2 sensors or something. I keep hearing about it on the forum and decided to try some today. I ran a whole bottle through a vacuum line I connected to a capped nipple at the vacuum tree thing. I repeatedly dunked the vacuum line while waiting a few seconds after each time not to stall it. I did half the bottle at first, turned off, waited 5 minutes. Started and had to keep my foot on the gas a bit to keep it running. Smoked the whole area out, looked as if the Volvo was on fire. Then I came back for more did a quarter then once more did the last of the bottle. Yeah this sh** really works though. I noticed a difference when introduced into the engine after the first time. Smoother idle and seemed to pull a little harder at higher RPM's. Happy I did it, can't wait to see if there is any small improvement in gas mileage after this weekend. I feel it definately helped and was worth doing. Can't wait to do it in my S90 now. Link to comment Share on other sites More sharing options...
Phil94850 Posted April 7, 2007 Author Report Share Posted April 7, 2007 yeah its great stuff.. im gonna do it to my other vehicles also. ive always been a little concerned about stuff in a can making false claims but i have to admit this stuff has my vote. Im gonna start running it in mine more often to keep her cleaned out. Its funny ive worked on cars for over 20yrs and never heard of it.for those of you that havent done it... give it a try youll be amazed. Link to comment Share on other sites More sharing options...
Gilhuly Posted April 7, 2007 Report Share Posted April 7, 2007 Has anyone tried just putting some seafoam straight into the combustion chamber through the spark plug holes and let it sit for a while? I think that that area and the exhaust valves in particular benefit most from this. Maybe just sucking it in the vac lines with the coil wire unplugged would do the same thing. Give that area a good soak and burn the stuff off a half jour later? Sorry in advance if this is buried in an old post. I've read the seafoam threads in the past and don't remember seeing this.yeah its great stuff.. im gonna do it to my other vehicles also. ive always been a little concerned about stuff in a can making false claims but i have to admit this stuff has my vote. Im gonna start running it in mine more often to keep her cleaned out. Its funny ive worked on cars for over 20yrs and never heard of it.for those of you that havent done it... give it a try youll be amazed. Link to comment Share on other sites More sharing options...
Oreo931 Posted April 7, 2007 Report Share Posted April 7, 2007 Do you have a wideband or narrowband AFR gauge? If it is narrow and you just spliced into the O2 sensor then you werent getting an accurate reading anyways. Link to comment Share on other sites More sharing options...
greasefingers Posted April 7, 2007 Report Share Posted April 7, 2007 Has anyone tried just putting some seafoam straight into the combustion chamber through the spark plug holes and let it sit for a while? I think that that area and the exhaust valves in particular benefit most from this.That’s actually not a bad idea. However, I would change oil afterwards as that solvent will slip right past the piston rings over a short time period. Link to comment Share on other sites More sharing options...
Phil94850 Posted April 7, 2007 Author Report Share Posted April 7, 2007 oreo.. i have a narrowband. i know flame me.. . like i said i just noticed after using the seafoam the gauge started reading in the lean area for awhile but now since ive driven the car its reading like it used to. I think it was picking up the seafoam in the system... Link to comment Share on other sites More sharing options...
Plan_B Posted April 7, 2007 Report Share Posted April 7, 2007 It's a good idea to replace the fuel filter afterwards. Link to comment Share on other sites More sharing options...
Dmsee Posted April 7, 2007 Report Share Posted April 7, 2007 I did seafoam couple of weeks ago and no problems so far. Just threw a CEL while doing it through vacuum but thats it. Link to comment Share on other sites More sharing options...
Phil94850 Posted April 7, 2007 Author Report Share Posted April 7, 2007 plan... trust me.. do it.. !! youll be happy with the results. Link to comment Share on other sites More sharing options...
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