My engine stalls at idle why?

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
HAve you checked for vacuum leaks? Has the check engine light come on?
Was this
answer
helpful?
Yes
No
Thursday, February 18th, 2021 AT 1:01 PM (Merged)
Tiny
JGEASLEY
  • MEMBER
  • 4 POSTS
I am going to do a thorough check for vacuum leaks this weekend, but no the engine light has not came on.
Was this
answer
helpful?
Yes
No
Thursday, February 18th, 2021 AT 1:01 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Let me know what you find.

Joe
Was this
answer
helpful?
Yes
No
Thursday, February 18th, 2021 AT 1:01 PM (Merged)
Tiny
JGEASLEY
  • MEMBER
  • 4 POSTS
Ok I am really stumped now if I take the vacuum hose off my brake power booster my truck idles and runs fine except no power brakes.
Was this
answer
helpful?
Yes
No
Thursday, February 18th, 2021 AT 1:01 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Okay, if it runs good with that disconnected, then the engine is running too rich. The extra air you get is helping smooth it out.

Have you checked fuel pump pressure? I'm wondering if you are getting too much pressure to the injector or if the temp sensor is bad.

The temp sensor tells the computer the ambient temp and the coolant temp. From that, the computer determines how rich or lean to make the fuel mixture. If the sensor tells the computer it's -40 degrees, it will dump fuel for the engine to run.

Also, did you check to make sure the catylatic converter is plugged?

Let me know.
Joe
Was this
answer
helpful?
Yes
No
Thursday, February 18th, 2021 AT 1:01 PM (Merged)
Tiny
JGEASLEY
  • MEMBER
  • 4 POSTS
Where is the temp sensor?
Was this
answer
helpful?
Yes
No
Thursday, February 18th, 2021 AT 1:01 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
It should be near the thermostat housing in the intake.
Was this
answer
helpful?
Yes
No
Thursday, February 18th, 2021 AT 1:01 PM (Merged)

Please login or register to post a reply.

Sponsored links