ATTN: Owners of 94/95's with the loapy idle
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Joined: Aug 2005
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yeah well i don't have a 94 or a 95 but mine does that alot, i wish i knoew what it was...it is very irritating...it will sit at about 800 then go down to 500 then jump to 1200 then drop back to 500 in almost and instant...odd..pls help....
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Certified GM nut
Joined: Feb 2004
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From: CT
loping
There are many causes of loping idle. If you keep chipping away at it youll find it.
Vac leak
Moisture in fuel
clogged injectors
Faulting TPS that changes the signal
bad or sticking IAC or dirty MAF
sticking PCV
fuel pressure or regulator
sticking valves
These are some of the more common
coil packs
Vac leak
Moisture in fuel
clogged injectors
Faulting TPS that changes the signal
bad or sticking IAC or dirty MAF
sticking PCV
fuel pressure or regulator
sticking valves
These are some of the more common
coil packs
Senior Member
Posts like a Corvette
Joined: Jul 2004
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From: Bolingbrook, IL Location: Clarkston, MI
If the idle is jumping around my bet is TPS. It has happend 3 times now with Ryan (2 times on the Bonne, 1 time on his Jeep). The price Ryan has to pay for having such a clean engine bay.
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From: Farmington, Minnesota =MWBF '05 SURVIVOR= =CEBF '06 SURVIVOR= =August '06 COTM=
Originally Posted by llBlazin_llLo
Is it loping because the idle is too low or is it the RPM bouncing?
There are many causes of loping idle. If you keep chipping away at it youll find it.
Vac leak < - No
Moisture in fuel < - Every tank? No.
clogged injectors < - Cleaned, Rebuilt, and flowmatched in Oct. No.
Faulting TPS that changes the signal < New, Nope.
bad or sticking IAC or dirty MAF < Tried 2 IAC'*, and new MAF. Nope.
sticking PCV < New. Nope.
fuel pressure or regulator < Wouldn't cause this issue.
sticking valves < Possible, but you're prolly gonna hear them.
These are some of the more common
coil packs < New MSD'*. Nope
Vac leak < - No
Moisture in fuel < - Every tank? No.
clogged injectors < - Cleaned, Rebuilt, and flowmatched in Oct. No.
Faulting TPS that changes the signal < New, Nope.
bad or sticking IAC or dirty MAF < Tried 2 IAC'*, and new MAF. Nope.
sticking PCV < New. Nope.
fuel pressure or regulator < Wouldn't cause this issue.
sticking valves < Possible, but you're prolly gonna hear them.
These are some of the more common
coil packs < New MSD'*. Nope
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From: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
I can honestly say, my old Bonneville and this Bonneville both have never idled perfect.
I have never been able to pin point why either...
I've learned to live with it, annoying as it is
I have never been able to pin point why either...
I've learned to live with it, annoying as it is
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True Car Nut
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From: Farmington, Minnesota =MWBF '05 SURVIVOR= =CEBF '06 SURVIVOR= =August '06 COTM=
Originally Posted by SSEimatt93
I can honestly say, my old Bonneville and this Bonneville both have never idled perfect.
I have never been able to pin point why either...
I've learned to live with it, annoying as it is
I have never been able to pin point why either...
I've learned to live with it, annoying as it is
Junior Member
Joined: May 2002
Posts: 1
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Originally Posted by LakevilleSSEi
Originally Posted by SSEimatt93
I can honestly say, my old Bonneville and this Bonneville both have never idled perfect.
I have never been able to pin point why either...
I've learned to live with it, annoying as it is
I have never been able to pin point why either...
I've learned to live with it, annoying as it is