i have 1991 astro van

Asked by Oct 22, 2015 at 08:55 PM about the 1991 Chevrolet Astro LT Passenger Van

Question type: Maintenance & Repair

new fuel pump and junk yard ecm still no injector pulse. also my check engine light no longer lights up. no sure if the light has just burned out or not. last time i got code was map. and tps. the map has been replaced, is it posible for the tps to stop it sending the pulse? i do have spark and if fuel is added to the tbi unit manually it will start but dies shortly after. you can keep it running by spraying carb cleaner into as well. but ofc that makes driving it a bit hard to do :P. any ideas

11 Answers

51,825

I can help a little on this... So it does have spark since it will run with gas dumped down the tbi. No injector pulse, so no fuel. Hard to say with you replacing the ecm. I know there should be a fuse for the ecm, have you checked that? I am assuming there is no power to the injectors.

51,825

It is possible the tps is bad since it sends a signal to the ecm letting it know how much voltage to supply to the injectors.

7,740

Chances are you will never get that engine to run until you get the coded key The new ECM has a different anti-theft code then your old unit and you will be an-old-old man before you get that engine to work

51,825

Thats right, I forgot about that, the security system shuts down the pulse to the injectors...

ok, i had no idea about the security system even doing that.

Thank you for your help.

is the system like the vats system? this is a 1991 and i cant seem to find anything for that year

almost forgot, i went out and put the old ecm back in and its still the same problem.

51,825

Why did you replace it anyway? And did you check the fuse for the ecm? I'd keep old one installed for now, unless there is a good reason you wanted to swap them.

the fuse was blowing almost as soon as you turned the key on. however i do believe that was the bad fuel pump i replaced at this point. i still have the no injector pules after changing them back. ive been looking forward to checking grounds today. i have already check the relevant connectors.

51,825

Let us know, and blowing the fuse is a short somewhere...

Your Answer

Add photo

Related Questions

  • 91 astro van 4 answers

    injectors spray wide open at idle.will not run unless one injector ( out of two) leed is unhooked.new carb/ throttle body ,brain?sometimes runs fine for 5 mi. then over fuels and dies.please point i...

    1991 Chevrolet Astro

    -

    Maintenance & Repair

  • where is the ecm fuse located on a 1991 chevy astro van? 3 answers

    Just put a fuel pump in.pump runs but not getting any fuel

    Chevrolet Astro

    -

    Maintenance & Repair

  • Astro van fuel pumps 2 answers

    I have a 2002 Chevrolet astro van that needs a fuel pump, will a fuel pump from a 1993 Chevrolet asto van fit my 2002 astro van??

    2002 Chevrolet Astro

    -

    Maintenance & Repair

  • how do you reset fuel after putting a fuel pump in a 1991 chevy astro van 5 answers

    Put a fuel pump in.you can hear the pump running,but I'm not getting any fuel

    1991 Chevrolet Astro

    -

    Maintenance & Repair

  • 1991 chevy astro 7 answers

    I have a 1991 chevy astro van it will turn over and over but it won't start changed the fuel pump and battery. What can the problem be

    1991 Chevrolet Astro

    -

    General

Astro

Looking for a Used Astro in your area?

CarGurus has 295 nationwide Astro listings starting at $1,815.

ZIP:

Search Chevrolet Astro Questions

Chevrolet Astro Experts

#1 celica_gt_pimp
celica_gt_pimp
Reputation 320
#2 Tom Demyan
Tom Demyan
Reputation 310
#3 John Saffrahn
John Saffrahn
Reputation 280
View All

Related Models For Sale

Used Chevrolet Astro Cargo Van
146 listings starting at $2,995
Used GMC Safari
104 listings starting at $2,795
Used Chevrolet Camaro
282 Great Deals out of 38,299 listings starting at $1,250
Used Chevrolet Suburban
459 Great Deals out of 18,780 listings starting at $1,399
Used Dodge Grand Caravan
307 Great Deals out of 34,367 listings starting at $1,995
Used Ford F-150
2,690 Great Deals out of 212,354 listings starting at $1,000

Used Cars For Sale

2005 Chevrolet Astro For Sale
18 listings starting at $2,995
2004 Chevrolet Astro For Sale
16 listings starting at $1,815
2003 Chevrolet Astro For Sale
50 listings starting at $3,900