Diagnostics

[Mork5.0]

Hi guys just wondering when I clip my connection with a pin it was flashing 1 short 2 fast which is fine then took clip out ....I set IAC then noticed engine light was on then I clipped it up again then turned reds on now it just flashes 3 times no long no short ?

 

[Mork5.0]

Just tried again then ...clipped the plug started it checked timing pull the clip seems nice for 10 seconds then engine light comes on and idle raises ...every sensor is new

 

[91SS]

Reseat connections to ecu and sensors to start. Clean them push pins in deeper in plug.

Even after that it may take a while to resolve itself.

Be aware it may be faulty ECU as a last resort and if going that way get remanufactured one not SH.

 

[Mork5.0]

Yeah it is remanufactured ecu

 

[91SS]

I had an issue where after replacing that sensor I had engine light issues. Turned out after replacing plug it righted itself after about 1 hour driving.
For another issue regarding flickering engine light that turned out to be ECU.

If It is ok for a few seconds seems that it may be losing signal momentarily so may be a connection issue.

Don't know what issues you had prior to replacing everything and these are hard fixes.

Don't forget to push up pins on ECU connector. And give it a little time to perhaps right itself.

Good luck.

 

[MikeC]

Pull the engine fusible link in the box behind the battery for 10 seconds to clear the ECM , reinstall and see if the fault recurs.

 

[MikeC]

When you set the IAC, you installed it retracted then ran the engine to let it reset itself?

 

[Mork5.0]

Think I got a problem just done a compression test
Only did 1 and 3 only 90 psi? Then my young daughter called had to come inside the IAC I installed and just done the 10 second thing didn't do much ...
Got a bit of black smoke when I give it gas thought it was a sensor sounds to low hey only a cheap compression tester engine was warm going to make sure tester wasn't leaking or something when I go back out

 

[losh1971]

Did you hold the throttle wide open.

 

[Mork5.0]

No I didn't ...I'll warm it up later and wedge throttle open