I am having a strange ECT problem with my 88.
Here is a little back ground on the car.
The car ran extremely rough at idle. When I swapped the intake for my Trackheat I found that most of the vacuum caps he had used to block off unused vacuum ports on the underside of the stock intake were had cracked and were leaking so I replaced them all. Helped out immensely. You can now start the car and it will idle while cold. So now the car is running pretty good. It has no functional EGR and no ECT sensor.
When I bought it the guy that had it before me had done some stupid things, in my opinion. The heater core had gone bad and they had bypassed it, by removing the entire metal heater tube and putting a plug in the threaded boss in the lower intake. So it did not have an ECT sensor in it. They also deleted all the EGR vacuum lines. Now I'm in the process of fixing the issues with the car.
When I put my longtubes on the car I got a threaded brass reducing bushing so that I could put a new ECT sensor in and hook it back up. After I put the sensor in I noticed that every now and again the car would stutter and pop through the intake at low RPM. Gradually it got worse. If it was at WOT or above 3000 rpm it ran pretty good below that it was hit or miss. Sometimes it was fine other times it ran like ass.
So I went back and unplugged the ECT sensor and voila the car runs good again. No stuttering or popping. Kinda baffling to me as to why it would run better with the ECT unhooked than with it hooked up. I haven't pulled the codes yet cause I have been to busy to really do anything with the car.
Just wondered if anyone else had ever heard of this or had any ideas as to what would cause that problem.
Here is a little back ground on the car.
The car ran extremely rough at idle. When I swapped the intake for my Trackheat I found that most of the vacuum caps he had used to block off unused vacuum ports on the underside of the stock intake were had cracked and were leaking so I replaced them all. Helped out immensely. You can now start the car and it will idle while cold. So now the car is running pretty good. It has no functional EGR and no ECT sensor.
When I bought it the guy that had it before me had done some stupid things, in my opinion. The heater core had gone bad and they had bypassed it, by removing the entire metal heater tube and putting a plug in the threaded boss in the lower intake. So it did not have an ECT sensor in it. They also deleted all the EGR vacuum lines. Now I'm in the process of fixing the issues with the car.
When I put my longtubes on the car I got a threaded brass reducing bushing so that I could put a new ECT sensor in and hook it back up. After I put the sensor in I noticed that every now and again the car would stutter and pop through the intake at low RPM. Gradually it got worse. If it was at WOT or above 3000 rpm it ran pretty good below that it was hit or miss. Sometimes it was fine other times it ran like ass.
So I went back and unplugged the ECT sensor and voila the car runs good again. No stuttering or popping. Kinda baffling to me as to why it would run better with the ECT unhooked than with it hooked up. I haven't pulled the codes yet cause I have been to busy to really do anything with the car.
Just wondered if anyone else had ever heard of this or had any ideas as to what would cause that problem.