You are here:

Pontiac Repair/1989 pontiac grand am 2.3


i have a 1989 2.3 grand am pontiac , it has a slight miss and loss of power . i have had it checked out by a mechanic and he can not find the problem . can toy give me any suggestions ?

Hi David:

well a mis fire can be caused by a lot of things mechanical issue. spark or fuel. doe it have a dead misfire like it only running on 2 or 3 cylinders or just a slight miss? my guess would be more spark or fuel. a lean (plugged) injector could be your issue. You can try a couple of bottles of Chevron Techron fuel system treatment it's about 5 or 6 $ a bottle you can get it at any Wal*Mart store. see if that helps. if it were spark it would have a more sever miss. a couple of other trhings to look for is maybe a cracked or kinked vacuum hose at the Map sensor on the intake manifold. that is where I would start looking. being that this is so old the engine computer is slow and uaully will not chatch any trouble codes for an intermittant issue. Good luck :-)

Pontiac Repair

All Answers

Answers by Expert:

Ask Experts


Todd Puccio


General auto repair,electrical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm specific. I have worked at my current dealership since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way. If your happy with the answer I gave you please feel free to Donate. This is a free service to you and I am not compensated at all by this web site. I have 22 years of experience to share with you and my knowledge wasn't free to me. I had to pay for my education.


Experience in the area: I have been a technician in GM dealerships for over 22 years and I am a ASE master technician. I work at a Buick and GMC truck store Previously I worked at a Pontiac GMC store for 18 years. I Served a a lead technician when dealership was on a team system. I just recently moved to a Buick,Hummer,Saab Store when my franchise was purchased by this dealership. Organizations: ASE master technician


Education/Credentials:High school diploma,2 year vocational school degree 2 year college degree. Associates degree in applied sciences (auto technology)Awards and Honors: GMC master technician

Awards and Honors
Master GMC truck technician Master ASE technician in 9 categories

©2017 All rights reserved.

[an error occurred while processing this directive]