1990 convertible
Thread Starter
8th Gear
Joined: Sep 2009
Posts: 8
Likes: 0
From: Hawley PA
1990 convertible
I have a 90 convertible and i am having trouble with the fuel system. Sometimes when I start it, it cuts right off. Other times it will start then shut off a minute later. When it drives it will sometimes backfire and when i step on the gas it bogs off or stutters. It has bee doing this for a year. Sometimes it will drive fine for a month and then the next day i will have the same problems. Does anyone have an idea of what is wrong? I am in the process of changing the fuel pump.
Le Mans Master
Joined: May 1999
Posts: 6,516
Likes: 1,303
From: Windermere FL
I would start with the simple and work to the more expensive.
If you got bad gas, or water in the gas, that would cause this. But you said it was happening for a while.
Otherwise, I would start with the fuel filter. If it is clogged, it will do that.
Next I would look at the fuel pump. If you can get a fuel pressure gauge on to the fail rails, that will help to figure it out.
Your injectors could possibly need a rebuild.
Good luck!
If you got bad gas, or water in the gas, that would cause this. But you said it was happening for a while.
Otherwise, I would start with the fuel filter. If it is clogged, it will do that.
Next I would look at the fuel pump. If you can get a fuel pressure gauge on to the fail rails, that will help to figure it out.
Your injectors could possibly need a rebuild.
Good luck!
Team Owner
Joined: Mar 2001
Posts: 66,716
Likes: 86
From: Santa Cruz CA
St. Jude Donor '15
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Instructor
Joined: Sep 2002
Posts: 198
Likes: 0
From: VA BEACH VA
Man does this sound familiar. My 89 coupe was doing the exact same thing and it was driving me crazy. I tried the things you all have mentioned and then it was suggested I change my injectors. I did and never had another problem.
