Engine cranks but does not start

Tiny
SJMCR1@GMAIL.COM
  • MEMBER
  • 1990 CHEVROLET ASTRO
  • 4.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
My van was running badly, took it to a shop and got it scanned, showed TPS and manifold temperature sensor faulty. Changed both, then replaced all tune up parts save plug wires. Ran better so I put $75.00 worth mid-grade gas in it, went to a work site and loaded tools and came home and unloaded. Got back in and it wouldn't start. Rolled out of the yard and let it set for a bit. It started but quit after 20 seconds. Would not start. Next day it started ran 5 seconds and quit. Called my mechanic and had it towed to his shop. He scanned it and everything showed in perfect tolerances, would not start. He changed the coil, no start, tried a new distributor, no start. Spent a week tweaking stuff. No start. Fuel pump is putting out 51 pounds pressure. I then sent it back saying this thing checks perfectly but won't start. I replaced EGR and ignition module, reset transmission selector, and everything I could from my book. Ready to shove it off a cliff but I like it and would like it to work. Any ideas?
Do you
have the same problem?
Yes
No
Sunday, April 3rd, 2022 AT 2:36 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

Fuel pressure should be between 9 and 13PSI on this vehicle. Are you sure the pressure is at 51PSI? If so, that certainly is an issue. See pic 1 below

Next, I need you to check for codes. This van has an OBD1 system and doesn't require a scan tool to retrieve codes. All you will need is a short jumper wire or even a paper clip.

Follow the directions in this link and let me know if you find any codes:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Let me know. Also, let me know if it does in fact have 51PSI.

Take care,

Joe

See pic below.
Was this
answer
helpful?
Yes
No
Sunday, April 3rd, 2022 AT 9:13 PM
Tiny
SJMCR1@GMAIL.COM
  • MEMBER
Thank you for the response. However, when I follow the steps you outlined, I do not get the check engine light. I get an arrow that says shift. Any ideas? Thank you. M
Was this
answer
helpful?
Yes
No
Tuesday, April 5th, 2022 AT 10:04 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

That's a new one. The shift light was for a van with a manual transmission. LOL

Are you sure you are connecting the correct pins in the connector? Also, is the key in the off position when you connect the jumper and then you turn the key to the run position?

Let me know.

Joe
Was this
answer
helpful?
Yes
No
Tuesday, April 5th, 2022 AT 5:52 PM
Tiny
SJMCR1@GMAIL.COM
  • MEMBER
Okay, I took the bulb out of the shift indicator, put the jumper in the indicated socket, no check engine light. Go figure. Thanks
Was this
answer
helpful?
Yes
No
Tuesday, April 5th, 2022 AT 6:46 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

No problem. Let's try this from a different point of view. First, I need you to confirm the fuel pressure you mentioned above. If that is correct, it's too high.

Next, I need you to try something for me. See what happens if you try starting it with starting fluid. If it starts and then stalls, we know its fuel related. If there is no change, then we need to check for spark to the plugs. Here is a link explaining how that is done:

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Let me know what you find.

Joe
Was this
answer
helpful?
Yes
No
Tuesday, April 5th, 2022 AT 7:09 PM

Please login or register to post a reply.

Sponsored links