car starts.....for 8 seconds.....multiple times
02-15-2009, 04:31 PM
#1
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car starts.....for 8 seconds.....multiple times The title says it all. Car will start, run for 8 seconds, then die. It doesn't sputter, just dies. All connections are fine. Battery and alternator are good. Fuel pump primes and at least delivers for 8 seconds oil pressure is good. New vacuum lines from intake manifold to fuel pressure regulator. So......what do I do?
No codes either....
In between starts it needs to sit for about 30 seconds.....don't know if that matters, but it won't start immediately after it dies. Smells like its running rich too.....
No codes either....
In between starts it needs to sit for about 30 seconds.....don't know if that matters, but it won't start immediately after it dies. Smells like its running rich too.....
02-15-2009, 04:34 PM
#2
Something sounds like it is heating up. Something electrical. Possibly the icm connected to the driverside cylinder head. I know they have issues sometimes, but never after 8 seconds, that is just really quick.
02-15-2009, 04:37 PM
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vatts!!!!!! my car did that exact same thing when i did the swap for me it was the security panel thing whatever by the pass side airbag you have to take it apart and put a new board in. thats what i did atleast. i hope thats not your problem though. lol. but i would look into the security system
02-15-2009, 04:39 PM
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vatts!!!!!! my car did that exact same thing when i did the swap for me it was the security panel thing whatever by the pass side airbag you have to take it apart and put a new board in. thats what i did atleast. i hope thats not your problem though. lol. but i would look into the security system
02-15-2009, 04:43 PM
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Over and over again? I can start it as many times as I want, but it only stays started 8 seconds each time.....doesn't seem like electrical to me.....are you sure?
02-15-2009, 06:18 PM
#7
No i'm not sure, lol. When current passes through aything electrical it heats up. When it gets too hot poof it shuts off. After it shuts off it cools right back down, hence why it may start again after 30 seconds or so. It's not the vats though, no way. The car would not turn over at all, and the security light would come on if that were the case.
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02-15-2009, 07:08 PM
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Check the coolant temp sensor in the water pump. Only other thing I can think of is the PCM. I had a bad flash once that caused that. The 8 seconds was the time it took for the fuel pressure to bleed down after priming. I could start the car but the PCM did not engage the fuel pump relay but it had enough info to prime it.
02-15-2009, 07:11 PM
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Just thought of this too. Over by the PCM, there is a connector that comes out of the harness not plugged into anything. It is a single wire. Apply 12V+ to that wire. That will turn on the fuel pump and keep it on. Start the car and see if it dies.
