’88 2.5L Ignition or Sensor Issue? (Page 2/2)
theogre NOV 02, 03:41 PM
After that...
take IAC out, "Paint" the cone w/ marker, install then drive.
after drive for a day to week, pull IAC again to look @ the cone.

the "Wear mark" should be an even circle around the cone.
I don't have a pic handle to post.

The TBI intake port for IAC can let crap, rust from air cleaner, etc & block the cone to seat in there.

TBI should have a gasket for air cleaner to sit on. Often is missing.
TBI Fuel Reg often leaks a little w/ engine running.
If there true... cheaper to get a "rebuild" kit w/ all gaskets + reg part. More so since have or will remove the TBI for intake & have that in the kit too.
skywurz NOV 05, 10:19 PM
When you turn the key to accessory do you hear the fuel pump prime? I'm wondering if the main fuel relay is not functioning properly and your oil pressure sensor is flaky at temperature.
theogre NOV 05, 10:48 PM

quote
Originally posted by skywurz:
When you turn the key to accessory do you hear the fuel pump prime? I'm wondering if the main fuel relay is not functioning properly and your oil pressure sensor is flaky at temperature.

That will cause the engine to cranks way longer to have enough oil pressure to close the F-pump switch.
skywurz NOV 05, 10:57 PM

quote
Originally posted by theogre:

[QUOTE]Originally posted by skywurz:
When you turn the key to accessory do you hear the fuel pump prime? I'm wondering if the main fuel relay is not functioning properly and your oil pressure sensor is flaky at temperature.

That will cause the engine to cranks way longer to have enough oil pressure to close the F-pump switch.[/QUOTE]

Right and it can cause the fuel pump to lose power if the oil pressure sensor is flaky
StockGT NOV 09, 05:11 PM
My experience with a '88 Duke included rought idle and stalls.
Started by looking at the ignition and fuel pressure, also looking for a bad sensor. The last item replaced was the throttle body fuel injector.

I replaced the injector after stalling on the freeway. I was able to get it running again by removing the fuel injector and tapping it. There was fuel getting to the throttle body. Had the right size torx driver with me.