Hey guys, I have a S/c'ed 92' LX and it has good power for the first 15 minutes of driving it. Once it gets up to temp it loses 20% of the power. My buddy said he thinks it because it running rich. Any other thoughts?
Do have a tune/chip? I would invest in a wideband O2 set-up, AEM or the Innovate lc-1 will do the trick. Another way to check, is crank up the car cold run in it in your window and check the plugs. Then run the car until it loses power and check the plugs again. If it is running rich than hopefully there will be evidence to confirm.
I havent brought it in yet, its my weekend ride and I'm going to have it dyno tuned within the next couple weeks, just seeing if you guys had any ideas before I brought it in
Is your setup intercooled? Could be heat soak from underhood temps rising.
Way too many things it could be to guess. Start with the basics such as checking codes and see if you have anything. A dyno tube would be a bonus.
Cars generally start up in a cold enrichment cycle and then fall back to sensor inputs once warmed up. That's why you should start with simple diagnistics first to determine if the cause is logged as a DTC.
This is a place where most of the questions asked are to help guys to fix their car themselves. So why did you even bother to ask if you were going to take it and have someone else fix it?
Checking the codes is simple enough that a 12 year old kid can do it.