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Van will not start


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ewoolsey
New User

Nov 22, 2008, 5:42 PM

Post #1 of 3 (1273 views)
post icon Van will not start Sign In

1996 Chevrolet Lumina APV
V6 3.4L
120,000 km

I have a 1996 Lumina APV that will not start. Just befor the van died it was sputtering like it was starving for fuel. I have since replaced the fuel filter but the van will not start. The van will run for a moment when you sprak quick start into the trottle body but will not stay running. You can hear the fuel pump cycle when you turn the key and there was fuel in the old fuel filter when I removed it so I would presume that there is fuel going through the line but the van will not run so I am unable to check the fuel pressure. I have checked and there is spark and air so the only option is fuel. An y assistance would be appreciated. Thank-you Erick


Jeff Norfolk
Enthusiast
Jeff Norfolk profile image

Nov 22, 2008, 6:06 PM

Post #2 of 3 (1270 views)
Re: Van will not start Sign In

i would say you are on the right track. Even if the fuel pump sounds like it is coming on it may not be suppling enough pressure to run the van. Also you need to check for injector pulse. You can use a simple test light for this. Alltho the 3.4 is difficult because the injectors are under the upper intake plemm, I think one or two can be unplugged. So unplug one and hook the clamp side of the test light to one terminal on the plug and the probe side of the the light to the other terminal on the plug. When you try to start the van the test light should light up. If this is ok then you will need to test pressure. A fuel pressure tester can be rented from most local part stores like Autozone. It is likely the fuel pump as this is the most common failure, but it is a lot of work and fairly exspensive to guess. Good Luck
Jeff


DanD
Veteran / Moderator
DanD profile image

Nov 24, 2008, 7:26 AM

Post #3 of 3 (1255 views)
Re: Van will not start Sign In

I agree with everything that Jeff has told you and will just add a caution when testing injector pulse.

If you are going to use a standard test light; you must make sure that the test light does NOT draw anymore then .3 of an amp, when connected to a 12 volt source.
Any more then .3 of an amp could cause the injector driver(s) inside the ECM (computer) to burn out.
If you’re unsure of what your test light draws; test it with an ammeter.
Other options are; a self powered test light that uses LEDs to show current flow or a noid-light. Either one of these will draw so little amperage that you’ll be safe not to damage anything.

Here’s an example of a noid light kit; as Jeff has suggested you may be able to rent the kit from a parts supplier? If not I don't think a single noid light would be all that expensive to buy?

Dan.



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