Hello, I'm Chris. Thanks for visiting Just Answer.
If you have no t done so yet I would start with new plugs and wires then use sea foam to clean out the throttle body, intake and combustion chambers to see if this helps. Can you do this or have you already done that.
After trying nearly everything we disconnected the vacuum line to the Fuel pressure regulator and "excersized" it with a small hand held vacuum pump. After about 5 cycles or so of pressure and vacuum the idle improved substanially.
We sent for a new regulator, will see Monday?
Installed the fuel pressure regulator, no change still wants to die at idle when hot.
Seems as if the fuel ratio goes off for some reason? Have swapped ECUs and no change, I actually have one of these vehicles myself.
I am out of ideas at this point not being there, I am going to let others view this and give it a shot.
Swapped it with the one from my car no change, idle motor seems to work.
Car still dies at idle. We seem to have explored everything at this point.
Is it possible the FI wiring loom is backwards? I noticed there are only two circuits on the injectors if the right is on the left would it cause this probmlem?
No history going back very far on this car. Reason it came in this time was to replace the ignition pickup in the distributor. Car would not run.
Timing is right on. Car has good power.
We have to increase the idle via the cable adjustment so as not to trip the computer to code 48. that makes the idle high enough to keep running. Really baffled here
We raised the idle speed with the throttle cable adjustment so as not to trigger the code 48, never did get the car to idle down? Oxy sensors were both dithering in range? We ran out of ideas and the customer needed to drive the car so we made it driveable and said we would keep thinking about it. My car will idle very slow now and then but keep running her's will not stay running when set to the factory settings.
may check back later Still thinking here
Ok I will do the same think this is a Throttle Body issue or it needs an ECM update..Keep me posted.
I tried the ECM from my car and saw no improvement.
I tend to think that the injectors might have a poor spray pattern and they might be dribbling instead of squirting. There does not seem to be a power problem, just will not idle slowly.
Also seems to be getting some oil in the coolant?
No particular coolant loss we can detect?
She is still having problems with it stalling
In a word, no, she decided to sell the car. I fear that some poor quality work was done on the engine before she started bringing the car to us.