General Maintenance & Repairs - My car is fluttering till 3k Then it hits, HELP!!
05-11-2012, 08:35 PM
I just received my pcm from Frost, was very happy with it.
I sent the PCM out originally because my car was fluttering all the way up to 3grand then once it hit 3, it would take off like a bat outta hell, well I thought somehow someway it mighta been from me deleting the EGR, and AIR. Nope Car ran great for 15 miles once I put the PCM in. Then bam, right back to where we started.
Any ideas? Thanks guys
05-11-2012, 09:35 PM
Well the problem with a mail order tune is the people who tune it jjust do a broad generalization fo your car. And its at no fault of theirs its all they can do without having the car itself on a dyno. Im thinking either have a dyno tune from a local shop or its kind of sound electrical. New coild packs maybe?
05-11-2012, 11:35 PM
If you had this problem both before and after the tune, and the first tune was the stock tune, then your issue here is not tuning. I would not advise you to pay for any additional tuning to fix a problem that existed even with the stock tune on a stock engine.
Something else is wrong. Do you have a scanner?
05-11-2012, 11:50 PM
I would probably run some vacuum tests since you removed the AIR system. Could be one of the lines to the intake didn't get capped off.
05-12-2012, 05:18 AM
It's not a tuning issue, I need to scan it, I was just seeing if you guys had any ideas, I will keep you updated, and check the caps.
05-12-2012, 12:43 PM
Failing Crank Shaft Position sensor will do that. So will failing 02 sensors, to some extent.
05-12-2012, 07:41 PM
My friends Corvette did exactly what you're describing and it turned out that his fuel pump was failing, just throwing that out there.
05-13-2012, 03:53 AM
Thanks guys, anymore info will be appreciated! Thanks
05-13-2012, 09:44 AM
Change your fuel filter lately?
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