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ECMlink 1g rough idle, bogging/sputtering not holding idle

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Rick T

Probationary Member
5
0
Dec 25, 2017
Putnam Valley, New_York
Like title states im having issues all the sudden with my car. I’ll start it up and will idle fine and after few seconds it’ll start to idle like crap and it will stall. It does it every time I start it back up and will only stay running if I give it gas however it misfires/sputters and bogs and cannot drive the car. Almost same symptoms as if you have a bad or disconnected MAF however I am running speed density

Fuel pressure is good
Brand new spark plugs
Brand new spark plug wires.
I checked all sensor connections all appears good..any suggestions??

here is a log with the car running, running rough, stalling and me restarting
 

Attachments

  • log.2018.08.23-02.elg
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Last edited:
Check the caps on the ecu to see if they are leaking. Also. Test your coolant temperature sensor.

Coolant temp sensor is new and ecu is fine. The problem is intermittent, sometimes I will leave the car off and come back turn it on and it’s fine
 
Might be some type of intermittent fuel pressure problem. Check fuel pump assembly and fuel pressure.
I have a fuel lab afpr and gauge is reading 37psi where it has always been so pressure is good.
 
Your running speed density so it uses a map sensor and iat if the map sensor is reading all screwy its going to run bad.
 
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