One-time, extended cold start?
As the title states I left my car outside tonight for a few hours and when I got back in, the gauge was definitely fully cold. When I went to fire it up, I was surprised at how long it took (about 3 seconds) opposed to the immediate fire up. I have a 04 with 11k miles, new plugs / wires / coils.
The only thing I changed recently was the intake. I installed the AEM intake the other day, and the car was driving excellent and pulling hard. Today I played around with it and cleaned my MAF, straightened the screened couplers, etc. During yesterdays install I unplugged the battery and reconnected it. I proceeded to reset the NVram and do the 20 stomp reset. I had no issues earlier today. On the way home, after the longer than usual start, it drove fine. No lights, pulled fine, etc. I even stopped right before my house to give it a hot start test - fired right up as it always does. Any idea what would cause this, especially on a cold start? I figure my starter is still healthy, so perhaps the PCM reset / AEM intake install could've affected it? I did fill up with new gas today too but it's 93 oct. Thoughts? |
Just wanted to add - the only other thing I played w today was the alternator tensioner screw - I tightened it just a wee bit. Not sure if this would effect it, but either way I loosened it back to where it was.
Battery was replaced when I bought the car 2.5 months ago. I'm hoping it was just a basic PCM relearning experience thing and not something else -__- |
It's fine, your car is fine. Breathe :)
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Originally Posted by Loki
(Post 4802966)
It's fine, your car is fine. Breathe :)
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It still takes a few drive cycles to relearn. Relax and breathe deeply.
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Originally Posted by gwilliams6
(Post 4803243)
It still takes a few drive cycles to relearn. Relax and breathe deeply.
After I first installed the intake the car drove great, esp. at high rpms. It screams and pulls hard. On the way back I noticed that when going up a hill in a higher gear and at low rpm I would get a "sputter" effect. Almost like quick mini backfires like pftpftpftpftpft you hear in the exhaust. No CEL, no codes, and never experienced before. Def a MAF / AEM intake screen issue. Right now the idle is pretty steady; every now and then it'll do a little dip but other than that there's been no stalling, etc. Car starts up immediately again, etc., drives fine, pulls fine, but like I said every now and then I'll be at lower RPMS (and on a hill) and notice the sputter. Like trying to pee after sex or drinking a lot. I will reset it again and see what happens. |
Engine Power Loss
• chokes as revs increase o O2 sensor failure (too rich) o MAF failure o MAF disconnected o e-shaft sensor fouled o accessory belt fraying • high end power loss (hard fuel cut) o Rev limit reached • high end power loss (jerky and stumbling) o Ignition failure o fuel pressure loss o e-shaft sensor fouled • high end power loss (smooth) o Catalytic converter clog o air filter clog • low end power loss (smooth) o Engine compression loss • low end power loss (stumbles) o Ignition failure o front O2 sensor failure • revs slowly but smoothly o O2 sensor failure (too lean) o catalytic converter clog o air filter clog • sudden power drop at a specific rpm o Intake valving actuation problem • trouble getting to redline o Ignition failure o front O2 sensor failure o catalytic converter clog o air filter clog o e-shaft sensor fouled o fuel pressure loss o MAF failure |
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