99 Astro van wont start PLEASE Help me!

Tiny
FSTED6464
  • MEMBER
  • 1999 CHEVROLET ASTRO
I have a 1999 astro van, it died while driving. Tried to restart and itll turn but it wont fire up. Replaced the cap and rotors, plugs and wires, fuel pump replaced a year ago, I check spark it gets good spark and fuel pump is fine and pressure, but it wont fire up, have gas as well. What should I try now? Please help me because its my only ride to work
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Thursday, July 12th, 2012 AT 8:25 PM

18 Replies

Tiny
ASEMASTER6371
  • EXPERT
We ned actual pressure reading on the fuel pump. See if it starts if you squirt carb cleaner in the air filter. If it does, then I would look harder at the fuel pump.

Roy
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Thursday, July 12th, 2012 AT 8:31 PM
Tiny
FSTED6464
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I was trying to get my husband to do that, not sure if we have one of those tools, but he doesnt think its the pressure or pump, but I know you have to have 60-66 psi or it wont fire up
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Thursday, July 12th, 2012 AT 8:36 PM
Tiny
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Thats correct. Tell him bascis, basics must be checked first.

Roy
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Thursday, July 12th, 2012 AT 8:44 PM
Tiny
FSTED6464
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Were not getting spark now after the distibutor, does anyone know where the ICM is located on 1999 astro van?
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Thursday, July 12th, 2012 AT 8:46 PM
Tiny
ASEMASTER6371
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Are you getting it into the distributor? Is there any coming out of the coil?

Roy
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Thursday, July 12th, 2012 AT 9:10 PM
Tiny
FSTED6464
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Yes, we replaced all of that, it getting sparks everywhere after the coil and distributor. Put fuel in throttle body, dont have tool to test pressure gauge it seems fine has plenty of spark just wont start! How can you tell if injectors are spitting out fuel?
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Thursday, July 12th, 2012 AT 9:20 PM
Tiny
ASEMASTER6371
  • EXPERT
Ok, now it has spark.

Did it start for a second when you put fuel in the intake?

You can tell by removing a plug and see if it is wet with fuel

Roy
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Thursday, July 12th, 2012 AT 9:31 PM
Tiny
FSTED6464
  • MEMBER
Were going to rent fuel pressure gauge tool to check pressure, but we just checked if plugs were wet with fuel and they are not, they are dry it wouldnt be the camshaft sensor maybe? Were running out of ideas thanks for helping
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Thursday, July 12th, 2012 AT 9:45 PM
Tiny
ASEMASTER6371
  • EXPERT
You need to check fuel pressure. I bet that is your failure.

Roy
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Thursday, July 12th, 2012 AT 10:01 PM
Tiny
FSTED6464
  • MEMBER
So we tested the fuel pressure and it is fine, we tested it like four times. We bought fuel pressure regulator to see if that will help. Not sure what else to do. Dont think its the fuel pump
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Friday, July 13th, 2012 AT 12:09 AM
Tiny
ASEMASTER6371
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What was the pressure reading?

Roy
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Friday, July 13th, 2012 AT 12:27 AM
Tiny
FSTED6464
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It read 70 psi
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Friday, July 13th, 2012 AT 12:35 AM
Tiny
ASEMASTER6371
  • EXPERT
You said when you sprayed carb cleaner into the air filter, it did not start? It should for a couple of seconds.

None of this makes sense. You said you have spark, 70 lbs of fuel pressure. It should start.

Does the check engine light come on?

Roy
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Friday, July 13th, 2012 AT 12:38 AM
Tiny
FSTED6464
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No check engine light doesnt come on, spark plugs are dry, my husband was a mechanic and this one has him baffled.
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Friday, July 13th, 2012 AT 12:45 AM
Tiny
FSTED6464
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What tells the injectors to spit the fuel out?
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Friday, July 13th, 2012 AT 12:45 AM
Tiny
ASEMASTER6371
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If there is no light, check the fuse for the pcm. It may not be giving any commands.

The pcm turns the injectors on and off based on inputs from other sensors.

Roy
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Friday, July 13th, 2012 AT 12:52 AM
Tiny
FSTED6464
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We checked all the fuses in the fuse block and under the dash where all the fuses are and they all light up and have power
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Friday, July 13th, 2012 AT 12:59 AM
Tiny
FSTED6464
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We checked the spider fuel injectors and everything is good and working, and no leaks etc. Not sure what else to do? Could it be the timing? Should we try TDC check?
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Friday, July 13th, 2012 AT 3:13 PM

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