skipping-bucking

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skipping-bucking

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Chevrolet Forum >> Chevy Trucks, Vans & SUV's >> Astro >> skipping-bucking

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skipping-bucking - 5/3/2007 11:45:04 AM

hphammer

Posts: 1
Joined: 5/3/2007
Status: offline

99 astro AWD
complete tuned up 2 months ago
2 weeks ago started to skip/ buck
added gas treatment and 2 tanks of gas still bucking
does not buck/skip under a load or acceleration
bucks/ skip not under load at any speed seams to be at a certian position on the gas pedal
could it be fuel injectors or a bad distributor?? Can someone help?

Post #: 1

RE: skipping-bucking - 1/25/2008 6:44:46 PM

amonahan

Posts: 3
Joined: 1/25/2008
Status: offline

My '97 puzzled me for months with a similar problem. I had erratic skipping/missing, but it always went when the pedal was on the floor. It also idled fine. I never had any trouble codes and the MIL light never came on. Finally I tore out the distributor on the advice of a friend and the gear was horribly worn. Changed out the gear and it's been fine. A shop with a good scan tool can look at the cam retard timing and tell right away if this is an issue. Mine was floating somewhere around -30degrees. It should be +/- 2 degrees I think. Maybe this helps? I'm sure there's more than just one bad gear out there that was heat treated on a friday afternoon!

(in reply to hphammer)

Post #: 2