Connect and Cruise start up issue

[Alphatrev]

The ECU assumes 58.5 psi at the rail, no matter the load and it does not have a sensor to monitor the fuel pressure.

Thanks for that. At least I can be confident that fuel pressure is not my start up issue.

[Alphatrev]

The saga continues. Ididit came through and I received the new ignition switch about an hour before they left for the day. So I was able to get a little assistance with the install. Unfortunately, the connector pins were different, so I had to splice the wires and feed it all back through the column. Bad news is, no change. The car still will not run. To make matters worse, Ididit sent me an ignition switch that is 3/8 inch shorter than the one I removed. So no way will the key tumbler engage. At least I have the original switch to re splice back in. While testing (without a key) I accidentally left the starter engaged for a few seconds, which demonstrated to me that the engine will not run for more than a second, even when being turned over in starter mode. I have a video of that, if I can attach it here I will.

Nope. Video will not convert from my iPhone.

[icemanrd19]

Text me 9728148824

[Alphatrev]

Many thanks to Randy (icemanrd10) for his time and input. Here's what we did:

Bought a code reader. There are no error codes.

Double checked my wiring. Pink 931 from Painless takes power from the Ididit ignition (also pink) wire.

Pink 920 from painless connects to GMPP pink wire.

Volt meter on pink 920 verifies that 12 volts is present at ignition run and start. Had my daughter turn the key to watch the voltmeter while turning over the engine.

Removed all 3 ground wires from the back of the engine, cleaned them with acetone and relocated them to more accessible side of engine bolts.

Ran a 10 gauge ground wire from the battery (in trunk) to the front of the car and directly connected to the ecm ground wires.

Bled a little fuel out of the Schroeder valve, then again with ignition on (pump running) to verify fuel pressure.

Ran a jump wire to the pink (920 and GMPP) to bypass ignition switch.

No change. Engine fires initially, but will not continue running.

[dhutton]

I read somewhere that some of the E-Rod connect and cruise packages will not run with the evap solenoid disconnected. Maybe it was Carl. Do you have an E-Rod?

Don

[Alphatrev]

I read somewhere that some of the E-Rod connect and cruise packages will not run with the evap solenoid disconnected. Maybe it was Carl. Do you have an E-Rod?

Don

This was not an E-Rod package.

[Alphatrev]

I can't tell you how pleased I am to say that my engine is running. Turned out that the bend in the rubber tubing ahead of the MAF sensor was so tight it was causing a vortex and the air was not flowing through the sensor. I pulled the tube off on the advice of Jason at Gandrud Chevrolet (the company that sold me the engine & trans package) and the thing fired up immediately. Thanks to Jason, and to everyone else that has input help and ideas. Now all I have to do is redesign my intake system.



The guilty tube bend is the one at bottom left. When I took it off for a closer look, there is a sharp molded edge on the inside of the bend where my finger is.

[pannetron]

Do you have an oil pressure sensor connected to the ECU through the GM harness? I believe the ECU cuts ignition power if there is no oil pressure.

[andrewb70]

Do you have an oil pressure sensor connected to the ECU through the GM harness? I believe the ECU cuts ignition power if there is no oil pressure.

I don't believe that's the case.