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1995 Chevy Astro No start problem !HELP!

Tiny
POET042005
  • MECHANIC
  • 1995 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 260,000 MILES
Hello eveyone. Well I now have a 95 astro van. Problem, 2 saturdays ago I drove the van all day and it started ran and drove just fine. I got up the following morning and it would not start. I let it sit for a few moments and then it started and ran fine just as it did the day before. The following weekend again I drove all day sunday with no problems, Monday it would not start. 3 days later I tried it again it started and I drove it all night no problems. Well next day no start again this time it wouldl not start at all, and has been this way since.

sensors I have changed map, control module, change coil pack, checked spark plugs but did not change wires, changed distributor cap and rotor, fuel pump with both filter and screen checked fuel pump relay and fuses, pourd shot of gas into throttle, checked ground wires. I have fuel to rail and spark at distributer, timing belt appears to be intact. Non of this has got the van running. I have ran out of options. I don't own a fuel pressure tester or voltmeter, so I have not checked specifications, but I have checked for codes and only code 12 appears.

It just sounds as if its not getting spark or fuel as I crank the motor but I can't figure out whats wrong.

any help would be awsome.

Richard
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Sunday, January 11th, 2009 AT 4:44 PM

8 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Get a fuel pressure tester designed for your fuel system and record the pressure readings then comeback with it we start here. In my book fuel comes before ignition so get back asap.
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Sunday, January 11th, 2009 AT 5:12 PM
Tiny
POET042005
  • MECHANIC
  • 134 POSTS
Ok I have fuel pressure readings. The van still will not start but of course the fuel pressure must be why. Pressure with key on engine off was a stable 11 psi. Specs should be between 58 to 64 psi I ran this test 3 times and 11 was the repeated reading. I never really assumed that the pump was bad even though I got it from another van I thought was running. I'm going to change the fuel pump, but do you have any other suggestions to add.

I realized I have that crapy spider fuel injection system. Even though I have changed both fuel filter and in tank screen whats a good method of injection cleaner besides taking it to GM dealer and having it put on a machine which I am trying to avoid because of their fee for this.

Let me no Richard
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Wednesday, January 14th, 2009 AT 3:59 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Run the good stuff from NAPA and see what happens-
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Wednesday, January 14th, 2009 AT 5:13 PM
Tiny
POET042005
  • MECHANIC
  • 134 POSTS
Well I change 3 different pumps and I am still getting a reading 11 psi as if the pressure is restricted between the fuel filter and ful tank.

I got a question for you would the fuel filter that is mounted to the firewall restrict fuel flow if installed the wrong way?

When I changed the filter the first time I notice it was rattling on the inside as if something was loose. I just took the filter off again and notice that now the new one is rattling just as the old one was; the filter should have nothing loose on the inside. Could this restrict my fuel pressure.

I turned the filter around even though it was busted on the inside to see what would happen and I stll got 11 psi but then I notice it fluctuated from 0 psi to 11 psi the reason was because the filter was not 100% secure to the lines and fuel was leaking as I turnd the key on to check the pressure.

Let me no what you think. Tommorrow I will be buying a new filter.
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Thursday, January 15th, 2009 AT 11:22 PM
Tiny
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What type of fuel system? Is it TBI/ MPFI or the CPI spider?

Check for injector/s or fuel pressure regulator leaking-if not test the fuel pump again that 11 psi is too low-
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Friday, January 16th, 2009 AT 11:20 AM
Tiny
POET042005
  • MECHANIC
  • 134 POSTS
I have a CPI. Tell me what do you think about the filter I described and the fact that it now is rattling from the inside, as if something is broken

Rich
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Friday, January 16th, 2009 AT 1:08 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
On the CPI spider -you should have a fuel pressure of 60-66psi open up the upper plenum and investigate the fuel pressure regulator.
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Friday, January 16th, 2009 AT 2:01 PM
Tiny
POET042005
  • MECHANIC
  • 134 POSTS
Problem was the fuel pump. What I did pull the high pressure line that runs directly to the fule pump and connected the my fuel pressure gauge inline to it (the fitting before the fuel filter) and then checked the fuel pressure from their and found pump was only putting out 11 psi with a new fuel strainer, fuel pump was bad, went to murrays and bought the thest fuel pump they had and not the cheap ones. Installed van fired right up.

All that other work for nothing. Thanks for your help
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Thursday, February 19th, 2009 AT 8:36 AM

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