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Old 04-23-2007, 05:04 PM   #268 (permalink)
DoctorDex
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Join Date: Jul 2005
Location: Edmonton, AB
Drives: '91 VR4 - RIP
Trader Rating: (17)
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Default Re: Lean Misfires at 2700-2800 rpm

Quote:
Originally Posted by regulator213
wow i have the same problems. except mine went away after i shut my car off. it all orignated when i sprayed mass airflow sensor cleaner on my mass airflow sensor. on the way home it started stuttering at 27-2800rpm. then it totally died. my mass airflow sensor is shot. does your car idle good? when at idle, give the mass airflow sensor a good smack with the butt of a screwdriver and see if it doesn't change the idle/kill the car. if it does then it's pry time for a new mass airflow sensor....not sure if this is any help but after 27 pages, any help is pry appreciated.
I no longer have the stock MAF, I have a GM MAF. No idle problems, just misfires in the 2600 - 3000 rpm range, the worst part being 2700-2800 rpm. Also noticed rpm oscillate under hard acceleration (similar to badass3000's pics).
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'91 VR4 - Rebuild in progress: Mods TBA.
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