SR PROBLEMS

[drifting240]

well i was driving all day today and everything seemed fine, until when i went out one more time, the car isn't accelerating, idles real hard and backfires everytime i switch gears....my car has a manual boost controller on at about 11psi and i have a front mount intercooler, its been raining all day, but i wouldn't think the water has anything to do with it...... so if anyone has any ideas or suggestions of what is wrong, please let me know... THANKS!!

[johna_99_99]

my car had the same issues with the backfiring and power......first check your 02 sensor....for my problem i unplugged the tps and it doesnt backfire and now has more power so im thinking its the tps....im getting it replaced soon.......anyways...try unplugging your tps and take it for a ride.

[dustyk]

I would first start out by checking for any sort of boost or vacuum leak in your intercooler piping. What kind of intake are you running with your MAF? I had a similar problem when I just had a filter on the MAF sensor, I think any moisture on the MAF sensor causes the readings to go off. I let me car sit overnight after it stopped raining and it fixed my problem.

[da40]

might have got some water/moisture were it dont belong it happens especially after the rain we have had the last week or so,i didnt even take the chance on driving my car in that $hit!!

[drifting240]

well my car is still doing that crap...i am running just a regular cone air filter, but sometimes it falls off....so i dont know if that has anything to do with it....

[240TweakerNewbee]

my car had the same issues with the backfiring and power......first check your 02 sensor....for my problem i unplugged the tps and it doesnt backfire and now has more power so im thinking its the tps....im getting it replaced soon.......anyways...try unplugging your tps and take it for a ride.

I'm reading this because I have had some of these problems in the past. First of all what is "tps" and how do I disconnect it? Second, what would disconnecting the O2 sensor do besides deprive the ECU of the O2 reading which wouldnt allow it to compute proper A/F ratio's?

[da40]

the tps sits on the TB

[jdm_master_X]

TPS = throttle position sensor o2= oxygen sensor

make sure all of your intercooler piping is clamped down tight, especially now that u mention that falling air filter. any vacuum or boost leaks are evident if u have a can of propane. just let some propane vapor float around parts of the engine. if the car picks up and runs fine when u place it in a specific spot, that is where the leak is.

good luck