Car starts, then dies immediately.

[SS/GNX]

OK.
So, I think my ECM is bad cause my fuel pump wont kick on and I've tested with a volt meter and jump power to the green/white wire that controls the pump right at the harness and it works. I also borrowed a buddy's ECM and the pump kicks on immediately, so that pretty much means I need one.

BUT!!!

My car will still not run. It turns over, fires, then dies out immediately.
I have tried the disarm sequence, same thing.

If anyone has any insight on this problem, I would greatly appreciate it.
Thanks.

P.S. before the ECM stopped turning on the pump I would have this issue.
I'd shut the car off to go get gas, then try to start and it wouldn't. I would try over and over and eventually like the 10th time it would just start and stay running. Very sporatic when it would start, but once I shut the car off it was back to doing the same thing. All I could do was cross my fingers.

 

[Just a Six??]

Went thru this over the last few days. When cold car would start but once hot it was a bear to try & start. Cool down & it was fine again.
My Module was bad & it was Brand New never used before. Put in the spare & no more issues!

 

[buickruss]

edit

 

[SS/GNX]

Doesn't matter if its cold or warm actually. Just randomly starts, and randomly does not.

I've tried cold starting it several times with no luck. It has a mind of its own.

 

[DCVING 6]

Sounds a lot like the anit theft in the chip. Try unpluggin the orange ECM plug by the battery for 30 seconds and try it all over again.

 

[SS/GNX]

Called Full Throttle had them run the part number and this chip does not have anti theft on it. Rules that out.

Tried new plugs. No luck.
Made a better ground to the fuel pump. No luck.
Bypassed the relay and "hotwired" the fuel pump. No luck.
Tried another coil pack module, not sure if its a known good one, but no change at all.

Have a brand new ECM BTW... no luck.

 

[DCVING 6]

try resetting cam sensor?

 

[ronsgn]

get some more gas.

 

[SS/GNX]

There's 3/4 of my fuel cell fuel of fresh gas. Not it.

 

[SS/GNX]

No, Dont know how to reset the cam sensor. Rick is going to come over someday this week and try a new cam sensor cap.

 

[Alaskabuick]

Maf

Mass air flow, mine did the same.. Try unplugging the MAF and starting it.. if it starts and stays running the MAF is bad..


Den

 

[DCVING 6]

Mass air flow, mine did the same.. Try unplugging the MAF and starting it.. if it starts and stays running the MAF is bad..


Den

He is running a MAFless setup.



I have the caspers cam sensor setting tool if you need it. I can also drop off my 60lb pro chip to Rick if you/he thinks that is something to try.

 

[SS/GNX]

He is running a MAFless setup.



I have the caspers cam sensor setting tool if you need it. I can also drop off my 60lb pro chip to Rick if you/he thinks that is something to try.

Glen, If I could borrow both of those, I would GREATLY appeciate it.
Rick did mention he wanted to try a chip, and I don't think checking and resetting the cam sensor OR trying the chip is a bad idea at all.

I'll PM you my number, I can pick it up. If you can meet up with Rick conveniently that will work also.

Thanks guys, I really appreciate the help.

 

[DCVING 6]

PM'd ya back

 

[SS/GNX]

Tried cam sensor cap, Map sensor. Nothin.
Had the battery tested. Its fine.

 

[SS/GNX]

Re-did all the wiring under the hood, took a grinder to anywhere a ground touched metal, new connectors, soldered them, shrink tubed em.
Found one very large ground that was not connected... that was the problem I am pretty sure. Its running again... hopefully it will last!

Glen, I'll drop off your parts I borrowed early next week. Thanks again.