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-   -   What the??? (https://www.cobaltss.net/forums/2-0l-lnf-performance-tech-153/what-265454/)

toeknee(ss) 11-14-2011 11:37 PM

What the???
 
My car is royally pissing me of. Today coming home from the gym I go wot, car hits 13-14 psi but has a weird feeling and somewhat jerks, and makes a weird noise. What could this b, any input.

ATLsilverSS 11-14-2011 11:47 PM

what are your mods? be more descriptive in how the car is acting

Dart_SI 11-14-2011 11:52 PM

Need moar info.

Blown07SS 11-15-2011 12:20 AM

Might be because you just worked out :D bahaha

I kid...

toeknee(ss) 11-15-2011 12:22 AM

K&n intake, megan downpipe. Car runs fine when driving normal, dont know how to really explain it, only that I hit wot get sone boost and it feels like the car is trying very hard, and sounds like a sputter almost. Damn I sux at this lol.

FrossB 11-15-2011 01:28 AM

throwing any codes?

ColeMart 11-15-2011 02:04 AM

Does it feel like it hits a rev limiter (but you haven't and it still slowly climes rpms)? Is that your normal boost?

FrossB 11-15-2011 02:21 AM

^^ that was my next question. My car has been doing what you just described. Im thinkin i have a bad coil or plugs or something. and when it gets to a certain RPM it misfires and knocks everywhere.

ColeMart 11-15-2011 02:39 AM

Mine did what I described a couple times. Took it to the dealer, no codes and nothing wrong. They suggested changing gas stations or it could be because of high humidity.

FrossB 11-15-2011 04:36 AM

did changing gas stations help?

toeknee(ss) 11-15-2011 08:08 AM


Originally Posted by ColeMart (Post 6150862)
Does it feel like it hits a rev limiter (but you haven't and it still slowly climes rpms)? Is that your normal boost?

U sir are correct.

tylerjclance 11-15-2011 08:10 AM

Water in the intake?

toeknee(ss) 11-15-2011 05:12 PM

i disconnected the battery last night and today it is running fine, dont know if that was the right thing to do but i sure feel a lil better. LOL

riceburner 11-15-2011 05:33 PM


Originally Posted by toeknee(ss) (Post 6151970)
i disconnected the battery last night and today it is running fine, dont know if that was the right thing to do but i sure feel a lil better. LOL

way to add more info lol

ColeMart 11-16-2011 12:20 AM


Originally Posted by FrossB (Post 6150944)
did changing gas stations help?

Right now it did. But when my car did that is was basically in the spring and next time in late summer. Both times was from the same station. Changed and haven't had the issue (might though never know).

Tomtwtwtw 11-16-2011 05:40 PM

My car used to have very loud knocking at times under boost, or what sounds like a loud knocking anyway. Hasn't happened since I went catless. I suspect possible cat issues and / or loose turbo --> DP bolts. Happened more often in the cold, which makes me lean more toward the latter.

Ch1ck3n 11-16-2011 09:19 PM

If you're running mods and are untuned your car will hate you. These Bosch pcms are really finicky about fuel trims.

Ch1ck3n 11-16-2011 09:25 PM

Could also be having fuel pump issues. One of the local guys I tuned had An issue similar to that. Upon logging, we found out his fuel pressure was dropping substantially right in this powerband. What kind of plugs do you run?


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