2001 Ranger off idle

Tiny
DEREK97116
  • MEMBER
  • 2001 FORD RANGER
  • 74,000 MILES
I have a 2001 ranger 4.0 liter v6 auto It has a low idle in gear like 500 and engine acts like its got a vaccum leak but got it checked and no leaks and I changed the maf sensor pcv valve plugs and wires tps sensor and iac valve and still does it its not to the point where it dies but you can tell it doesent idle right what else could it be it did pass emmissions testing
Monday, January 23rd, 2012 AT 2:30 AM

4 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Stop throwing useless parts at it.

Did it have any codes? When you start it up, does it idle up fast and then come down low? Did you adjust the base idle when you did the iac valve?

Roy
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Monday, January 23rd, 2012 AT 2:38 AM
Tiny
DEREK97116
  • MEMBER
  • 41 POSTS
It does go high like 1200 then goes down to 500 and I have tried adjusting the set screw a tad but that dident help and no all I did was swap the iac valves and disconnect the battery
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Monday, January 23rd, 2012 AT 2:42 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Then the iac is working. It sounds like the throttle or the base idle has to adjusted. With the iac disconnected, the idle should be 550 rpm.

Roy
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Monday, January 23rd, 2012 AT 3:17 AM
Tiny
DEREK97116
  • MEMBER
  • 41 POSTS
How do you adjust the base idle
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Monday, January 23rd, 2012 AT 3:40 AM

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