Code 42 EST

[Jax ZR1]

Yes the pin was solid and I checked that code with a code reader set on ecm codes not the abs setting so I believe it is est problem. Still waiting to hear back from the shop.

[XfireZ51]

Originally Posted by Jax ZR1

Yes the pin was solid and I checked that code with a code reader set on ecm codes not the abs setting so I believe it is est problem. Still waiting to hear back from the shop.

From ur description, sounds liike something intermittent. I would start the car and jostle the harness connectors on the ICM and ECM.

[Jax ZR1]

Originally Posted by XfireZ51

From ur description, sounds liike something intermittent. I would start the car and jostle the harness connectors on the ICM and ECM.

Ok I will try that if they can’t find anything at the shop still waiting to hear from them, so I can go pick up the car.

[Jax ZR1]

So the shop thinks they have the code 42 fixed but can’t figure out why the starter quits working after the car gets hot, so going home with a no start when hot problem new starter didn’t fix that. May have to pull the plenum and look at the starter, going to delete the throttle body coolant line this time thanks for the help. Any ideas for the starter would be great but I’ll start another post when I start that

[Jax ZR1]

Sooo just kidding as soon as the shop gave me the keys back went to drive away and because the car was warm from moving out of the shop it wouldn’t start and had to push start it and the check engine light came back on right away drove it the hour home and I guess I’ll try again myself. Shot in the dark if the cam position sensor is cracked and allowing oil inside it could it cause these problems, cause I’m looking for one of those as well, have a lead on one so going to follow upon that, and the starter problem I seen on here someone talking about putting a resister in the start wiring would that help my problem

[-=Jeff=-]

Cam sensor does not directly affect ignition module. Open the cover on the ECM and check the MEMCAL if it is loose, it will cause the code 42

[Jax ZR1]

Originally Posted by -=Jeff=-

Cam sensor does not directly affect ignition module. Open the cover on the ECM and check the MEMCAL if it is loose, it will cause the code 42

Ok I’ll try that been a long day today so tomorrow’s job thank you

[Marc Haibeck]

Considering that the problem started after installing the ignition module connector, I think that it's most likely that there is a problem with the connector. Sometimes the female pin in the connector gets crushed to the side or pushed back. I would remove the D connector on the ECM and measure the resistance of the IC (pin D1) and Bypass lines (pin D12) on the ignition module. They should not be over 10k ohms to ground. If so, there is an open circuit.

A silent no start with a hot engine is likely caused by friction in the starter solenoid or low current to the solenoid.

[Jax ZR1]

Originally Posted by Marc Haibeck

Considering that the problem started after installing the ignition module connector, I think that it's most likely that there is a problem with the connector. Sometimes the female pin in the connector gets crushed to the side or pushed back. I would remove the D connector on the ECM and measure the resistance of the IC (pin D1) and Bypass lines (pin D12) on the ignition module. They should not be over 10k ohms to ground. If so, there is an open circuit.

A silent no start with a hot engine is likely caused by friction in the starter solenoid or low current to the solenoid.

After work tonight I will check that thanks Marc

[Jax ZR1]

So again last night I started the car went for a drive no codes but I checked the memcal card and it was tight, it is one from Marc. But again no start when it was hot, found that there is only 5.5 volts going to the starter solenoid and if you give 12 off the battery it will start, not sure why I have such low voltage. Thinking that the 5.5 volts works when starter is cold but not enough when the starter gets warm