1991 Ford Ranger Won't idle

Tiny
BLADEBOY2025
  • MEMBER
  • 1991 FORD RANGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 176,000 MILES
I have a 91 Ford ranger that will start and die. If I bounce the gas I can keep it running. The truck will run with the MAF disconnected, but I've replaced this and it still has the same issue. Any ideas?
Do you
have the same problem?
Yes
No
Sunday, December 13th, 2009 AT 10:06 AM

4 Replies

Tiny
RASMATAZ
  • MEMBER
Check and test the Idle air bypass valve, PCV and EGR valves, BMAP sensor /throttle position sensor
Was this
answer
helpful?
Yes
No
Sunday, December 13th, 2009 AT 12:16 PM
Tiny
BLADEBOY2025
  • MEMBER
Those were my next guesses, I really need a chilton. Maybe I could just carb it, HA! EGR is under the manifold, so I think I will check for that last. Any place online I can get resistance and voltage specs for a 91 ranger?
Was this
answer
helpful?
Yes
No
Sunday, December 13th, 2009 AT 1:55 PM
Tiny
RASMATAZ
  • MEMBER
Raise the idle thru a air valve screw or the throttle screw if it has one and see what happens.
Was this
answer
helpful?
Yes
No
Sunday, December 13th, 2009 AT 4:58 PM
Tiny
BLADEBOY2025
  • MEMBER
Alright, the idle adjustment didn't change the problem same clunking at idle, I set the butterfly slightly open with the screw and did a voltage check on the TPS. No dice. I'm going to take the IAC off and check for movement, after that I can only assume EGR or bad injectors.

One strange thing it does is, when the gas is touched the RPMs jump about a 1k and stay there for a few before it drops back down to a death chug.

No codes until the engine dies.
Was this
answer
helpful?
Yes
No
-1
Monday, December 14th, 2009 AT 12:05 PM

Please login or register to post a reply.

Recommended Guides