My 93 GT starts fine and idles smoothly. It has about 83,000 miles on it. Besides some Headers and a flowmaster exhaust, the engine is stock. The problem is, when I give it gas, the engine bogs down, pops, and hesitates very bad. I have gone over the ignition system replacing everything from plugs to the TFI module. Timing seems to be dead on at 10 before TDC. I have replaced the fuel filter and the fuel system reads from 35 to about 42 psi, which is about normal. I am running out of ideas and places to look. I have also gone over the vacuum lines and cant find anything disconected or a broken line. To get the engine to accelerate at all I have to baby the throttle and nurse it so the car doesnt start poping and stuttering. I am not getting any engine codes either. Please help!!! I am stuck on this problem and its driving me crazy!!
93 GT running odd
- Thread starter Magellin
- Start date
A couple of ideas
Did you check to make sure that the timing is advancing properly?
Another idea - I had a similar problem lately and noticed that my aftermarkek (SDS) controller was showing "error" in the RPM field. Turned out to be a poor connection at the distributor harness.
I guess fuel pressure could also be checked.
Did the problem just start all of a sudden or did it get progressively worse?
Did you check to make sure that the timing is advancing properly?
Another idea - I had a similar problem lately and noticed that my aftermarkek (SDS) controller was showing "error" in the RPM field. Turned out to be a poor connection at the distributor harness.
I guess fuel pressure could also be checked.
Did the problem just start all of a sudden or did it get progressively worse?
The problem seems to be progressing. It started as, maybe needed a tune up, and is now at the point where it seems to have a serious malfunction. After I time it and put the jumper back in the timiming does advance about 8 degrees. Also I am assuming 10 before TDC is the right timing, my emmissions stickers has been gone since I got it painted. Either way, I have retarded and advanced the timing but neither seem to help.
Welcome!
You can also make sure the TPS has a nice gentle sweep with no breaks in the signal return wire (should range from ~1 volt to ~4.6 volts, nice and smooth).
Does the issue improve when the motor is hot?
Good luck
You can also make sure the TPS has a nice gentle sweep with no breaks in the signal return wire (should range from ~1 volt to ~4.6 volts, nice and smooth).
Does the issue improve when the motor is hot?
Good luck
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