Weird idle

Tiny
ZIPPYTHESTAR
  • MEMBER
  • FORD RANGER
1994 Ford Ranger, 3L V6, rebuilt motor 120000km, manual. Here's the deal, on cold starts, the idle climbs and drops repetedly until engine gets warmer! While this is happenning, the Amps gauge indicates a severe drop, especially when headlights are turned on! What could be the cause of this?
Tuesday, October 16th, 2007 AT 8:35 PM

3 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
The amps would be low if the engine is idling erratically.
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Wednesday, October 17th, 2007 AT 8:50 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Also set a higher fuel mixture to help engine stay running while idling till it heats up. ALso if engine light is on the coolant sensor could be faulty and send a wrong temp to the ecm causing it to misadjust the proper fuel mixture.
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Wednesday, October 17th, 2007 AT 8:53 PM
Tiny
98RANGERXLT
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  • 301 POSTS
You could have a bad battery or alternator.
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Thursday, October 18th, 2007 AT 10:52 PM

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