Gauge in the dash gets it's data from the same sensor the PCM does, so, that checks out.

It almost seems like a programming issue..... but, I don't think that company does anything at all with the tune.....Can you do data logging with your scanner?

 

Unfortunately, no data logging. I just get engine temp, rpms, etc.

 

If you have it set to display codes, will it even flash the code when the engine dies?

 

I haven't been able to catch a code displaying. It happens too quickly, and then the fuel pump re-primes and it's ready to start back up.

 

Did it do anything like that with the other PCM's? Or even with this one before you sent it out?

 

I'm so glad you asked... Here are stalling symptoms according to different PCMs. Nothing I've "fixed" or replaced has had any impact on any symptoms. Symptoms are purely PCM based. Stall is always the same... fast. Like you turned the key off.

• Original PCM (came with van and looks original) - van has CEL and P0505 error, and stalls frequently at idle. Van starts again easily, but stall again at idle. Could drive it by dropping into Neutral and giving it gas at red lights.
• SoloPCM #1 - crank no start and fuel pump runs constantly with key On. Impossible to start.
• SoloPCM #2 - starts and runs fine, but after 20-30 minutes driving or idling, van stalls and will not restart. Crank no start, gauges dead, no connection to scanner and No Bus on odometer. Van eventually wakes up, you hear the relay click and the fuel pump prime, and it starts easily. Will stall again in 5-10 minutes and go back to No Bus.
• Original PCM #2 (P0505 error fixed by SoloPCM. They thought it would be easier to resolve the P0505 than the No Bus issue on their own unit) - starts and runs fine, but as soon as temp hits 78-90 it dies like I turned the key off. As soon as it dies, you hear the fuel pump prime. Starts easily but stalls in a minute or two. No codes and CEL just blinks for a second as it stalls.

 

OK, that is once again a PCM problem. Wonder if they smoked something else when fixing the P0505.... (which is an IAC code.... basically, the PCM can't control it.) I would expect they had to replace components on the PCM board..... real easy to smoke something else, or break a trace on the board with a soldering gun......

 

Has the Ignition switch been replaced?

 

Thanks HeyYou - does anyone have a PCM re-manufacturer they recommend? I've searched around on the forums and no one seems enthusiastic about any of them. SoloPCM's been great about taking units back and trying again, but seems like their QA is nonexistent.

Also, I've got a hunch it might be the ASD relay flicking off for a second then coming right back on. Any safe way to jump that and test if the problem goes away?

 

Ignition switch has not been replaced. I did pull it totally apart and inspect it, with humbling results, but it all went back together fine eventually and all the contacts were pristine.

Any way to test the switch without buying a new one?