Help me find the problem
Thread Starter
Burning Brakes
Joined: May 1999
Posts: 1,189
Likes: 0
From: Lewisville Texas
Cruise-In II Veteran
Help me figure ot what's wrong with my car. When I take off I can hear and feel the car stumble and pop. Almost like the feeling if you have ever got your distributor wet. If I nail it it will still jump out and it rev's OK, but when I take off normal I can tell there is something not right and it's getting worse. On Saturday I changed the plugs(the old ones looked OK) and the fuel filter. What else could it be? I know what I'm thinking but I want to wait until I get a few responses to see i I'm on the right track. Actually I have 3 things in mind. What do you think?
Melting Slicks
Joined: Dec 1999
Posts: 2,816
Likes: 2
From: Austin, TX
Which car '89 or '95? If it's the '89 I would think it's something with the distributor advance (that year has electronic advance, right?). Have you tried putting a timing light on it?
Obviously if it's the '95, the above doesn't apply. The only thing I would say there is the Opti is going.
Obviously if it's the '95, the above doesn't apply. The only thing I would say there is the Opti is going.
Safety Car
Joined: Feb 1999
Posts: 4,724
Likes: 16
From: Little Elm TX
Thumper,
With my Formato chip I have the same problem... it was real bad, but after some tinkering its barely noticable right now, and at wot it is not there. I simply played with the TPS sensor.... I finally found a sweet spot where it was minimal.
Not sure if this is related to your problem.... but worth a shot.
good luck
Beach Bum
With my Formato chip I have the same problem... it was real bad, but after some tinkering its barely noticable right now, and at wot it is not there. I simply played with the TPS sensor.... I finally found a sweet spot where it was minimal.
Not sure if this is related to your problem.... but worth a shot.
good luck
Beach Bum
Thread Starter
Burning Brakes
Joined: May 1999
Posts: 1,189
Likes: 0
From: Lewisville Texas
Cruise-In II Veteran
Thanks for the input, I guess it would help if I told you which car. It's on the '95. I'm thinking it's either the ignition coil, the PCM, or the opti. I don't notice it at full throttle only part throttle.
Beach--My mind is not functioning right now, too many things going on. TPS sensor???
Beach--My mind is not functioning right now, too many things going on. TPS sensor???
Thread Starter
Burning Brakes
Joined: May 1999
Posts: 1,189
Likes: 0
From: Lewisville Texas
Cruise-In II Veteran
Thanks Ralph. Lately I've been having a lot of Brain cramps 
Brian--I thought about the plugs and your 2nd thought was mentioned to me yesterday also. I hope not. How can I check for a leaking waterpump?
Brian--I thought about the plugs and your 2nd thought was mentioned to me yesterday also. I hope not. How can I check for a leaking waterpump?
Team Owner
Joined: Mar 2001
Posts: 30,845
Likes: 293
From: Boston, Dallas, Detroit, SoCal, back to Boston MA
Just put your hand under it.
check the belts and the water level
Being a 95 it's a vented optispark, but the vent lines can go bad, after that Texas heat all my wires, and a lot of the plastic was toast. After dark tonight, leave the engine running and pop the hood. If the wires are leaking any current you'll see the light show!
check the belts and the water level
Being a 95 it's a vented optispark, but the vent lines can go bad, after that Texas heat all my wires, and a lot of the plastic was toast. After dark tonight, leave the engine running and pop the hood. If the wires are leaking any current you'll see the light show!
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Thread Starter
Burning Brakes
Joined: May 1999
Posts: 1,189
Likes: 0
From: Lewisville Texas
Cruise-In II Veteran
Thanks Brian, I'll check it tonight. After thinking about it I'm really thinking you might be right about the water pump because the car has also been runnung a little hotter than normal lately. Thanks again and I'll let you know what I find out.