SPONSORED LINKS

Stalls at idle

Tiny
RUBENM
  • MEMBER
  • 1999 FORD RANGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 141,000 MILES
When a car is first started the RPM runs high until it warms up. My truck recently stopped doing this. The RPM is very low at startup so I have to keep pumping the gas to avoid stalling. It takes about 10 minutes of driving before it will idle correctly when I come to a stop. No problems noted when the truck is moving.
SPONSORED LINKS
Monday, November 24th, 2008 AT 9:46 PM

1 Reply

Tiny
DAVE H
  • MECHANIC
  • 13,383 POSTS
Check wiring or replace IAC

IDLE SPEED
Idle Air Control (IAC) Valve Assembly
IAC valve assembly is used to control idle speed and provide a dashpot function. IAC valve assembly meters inlet air around the throttle plate through a by-pass within the IAC valve assembly and throttle body. See Fig. 8 or Fig. 9.
The PCM determines desired idle speed or air by-pass and signals the IAC valve assembly through specified duty cycle. The IAC solenoid is built into IAC valve assembly. IAC solenoid responds by positioning the IAC valve to control amount of air by-passed. PCM monitors engine speed and adjusts IAC duty cycle to achieve desired RPM. IAC valve assembly is not adjustable and cannot be cleaned.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, August 13th, 2020 AT 5:25 PM

Please login or register to post a reply.

Related Engine Stall At Idle Content

Engine Stalls After Dead or New Battery
GUIDE
Engine Stalls After Dead or New Battery
So you installed a new battery and now the engine stalls? You have done nothing wrong because believe it or not this is normal. The engine computer has a learning cycle...
VIEW MORE

Sponsored links