I used the paper clip to check my codes but the check engine light flashes constantly. There is no hesitation to indicate the codes. I have a 1992 Sc400 help.

 

if it constantly flashes with no breaks or pauses, then it means there are no codes stored in the pcm...

is your check engine light on? is it on all the time?

 

yes my check engine light was on and now my car just turns over strongly but will not start. I did remove my ecu but reinstalled it after cleaning my carpet outside of the car.

 

If you removed the ECU, it deleted the code, for sure, and unless it is actually running, certain codes will not come back...

You are going to have to troubleshoot the old fashioned way - start with spark, then check fuel...

 

All this trouble started when I tried another ecu, it did not work so I put my old one back in. My old one still worked. I then tried another fuel pump control (located behind driver, passenger seat side cover) it worked but I put my original one back on. Is there a reset button or something that I can push. I was in the process of replacing most of my interior side panel, door panels, center console and seats. Help.

 

What was the exact order of everything that happened?

The trouble started because you tried another ECU, or you tried to fix a problem with another ECU?

Have you checked that there is spark, fuel and that the timing belt is in tact and timed correctly?

Without troubleshooting those three first and with no codes to even give you a clue, then I doubt you'll have much luck finding out your problem... Could be something as simple as a cam/crank angle sensor, could be an igniter / coil pack gone bad... We need to do some diagnosis and stop throwing parts at it...

P.S. In Juneau on a cruise right now, leaving port... Skagway tomorrow... might be online, might not... relaxing for a few after dinner right now...

 

I unplug replug wires to my sensors mainly ignition coils and that seem to have fixed everything for now. Thanks everyone