O/T Need help quick...94 Grand Am - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ryanroo · 02-23-2005, 01:27 AM

Ok, my girlfriends car just started to chug funny, acts underpowered, but not missing, it runs fine, just sounds like a tractor kinda. i think the cat might be bad in it, but im not sure. the engine is also shaking more than normal, but like i said its not missing, just acts real doggy. what do you all think?
Ryan
Ryan

**VetteVet** · 02-23-2005, 02:13 AM

Well those things are notorious for blown head gaskets. Timing belts, fuel injectors, clogged cause shaking but still won't miss. The spray pattern is affected so that it is not uniform. Fuel pressure low(clogged filter, bad pump). Are there any codes. Dirty Mass Air flow sensors. These are some things that come to mind.

VetteVet-old and don't like computers in cars

cochino12 · 02-23-2005, 02:21 AM

I have a friend that was having the same problem, it was a o2 sensor. check out grandamgt.com they should have some info for you too.

Btw. did the wheel get there yet?

ryanroo · 02-23-2005, 07:52 AM

Shes going to have it checked out today thanks for the replies.

cochino12- not yet, im hoping today.

Thanks,
Ryan

shifty · 03-08-2005, 02:00 AM

Fuel filter. I had a '91 when I wa sin high school. Had the same response when stomping on the gas. @ 120k miles, fuel filter had never been replaced and caused the entire problem.

One shop in town tried to tell me the injectors were bad, another tried to tell me the ECU was going out. Both asked for $1200-$2500 to fix the problem. Only cost $8 for the new fuel filter.

Goes to shoe you that you can't trust anyone these days.

02-23-2005, 01:27 AM	#1
ryanroo Senior Member Join Date: Apr 2004 Location: sw colorado Posts: 2,720	O/T Need help quick...94 Grand Am Ok, my girlfriends car just started to chug funny, acts underpowered, but not missing, it runs fine, just sounds like a tractor kinda. i think the cat might be bad in it, but im not sure. the engine is also shaking more than normal, but like i said its not missing, just acts real doggy. what do you all think? Ryan Ryan __________________ 72 K20 12v build 72 K20 "parts truck" A place for your diesel swap questions

02-23-2005, 02:13 AM	#2
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,718	Well those things are notorious for blown head gaskets. Timing belts, fuel injectors, clogged cause shaking but still won't miss. The spray pattern is affected so that it is not uniform. Fuel pressure low(clogged filter, bad pump). Are there any codes. Dirty Mass Air flow sensors. These are some things that come to mind. VetteVet-old and don't like computers in cars __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

02-23-2005, 02:21 AM	#3
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	I have a friend that was having the same problem, it was a o2 sensor. check out grandamgt.com they should have some info for you too. Btw. did the wheel get there yet? __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually

02-23-2005, 07:52 AM	#4
ryanroo Senior Member Join Date: Apr 2004 Location: sw colorado Posts: 2,720	Shes going to have it checked out today thanks for the replies. cochino12- not yet, im hoping today. Thanks, Ryan __________________ 72 K20 12v build 72 K20 "parts truck" A place for your diesel swap questions

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03-08-2005, 02:00 AM	#5
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,373	Fuel filter. I had a '91 when I wa sin high school. Had the same response when stomping on the gas. @ 120k miles, fuel filter had never been replaced and caused the entire problem. One shop in town tried to tell me the injectors were bad, another tried to tell me the ECU was going out. Both asked for $1200-$2500 to fix the problem. Only cost $8 for the new fuel filter. Goes to shoe you that you can't trust anyone these days.



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