Keith

Eagle, thanks for the response, I will follow your suggestions and keep my fingers crossed.

Engine was driven about a mile after it lost all the oil (hole in pan), had Mobil One oil in unit. Engine now will start and run with minor knocking, when it gets hot, oil pressure drops to zero at idle, picks back up when accelerated. Bearing problem? Or engine destroyed?

Next dumb question, does a replacement unit have to be programmed to the vehicle VIN?

Cruiser - Thank you, really appreciate the advise!

In replacing the ECU on my 89 - 4ltr - 5 speed, do the numbers off of a replacement have to match what is in the unit? If not what units will interchange?

Replaced the CPS, have also gone thru your tips, still no start. Could it be the ignition module?

Quit running and now won't start. Checked coil and there is no spark (new coil). Suggestions to follow?

Thank you, the green wire did the job. Have a Bosch FIX 7853 Remote Starter Switch.

1989 4 L. Manual 5 spd., what is the correct way to hook up a Remote Starter Switch?

Changed the O2 sensor and the MAP sensor, neither helped. Filled up today 11 mpg as compared to 17 -20 in the past.

Have had Commanche for 15 years and never changed O2 sensor, will try that. Thank you

1989 4.0 5 speed, out of the blue it has started running very rough at idle, runs great as the RPM's increase but my mileage has crashed from 18-22 Hwy to about 13 and less than that in city. Any suggestions?

Did all of the suggestions, hoses clean & OK, TB was dirty, cleaned, engine runs better still not 100% but driveable. Thanks to the responders.

1989 4.0 engine with 5 speed. Engine started stalling recently when it comes to an idle, runs fine from 1000rpm and up. In checking things I removed the rubber hose that runs from the valve cover grommet to the intake manifold and the engine runs, hook the hose back up and the engine quits. Any suggestions?

Thank you!