Idle Rev and Surge - then stall - Page 2 - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #26  
Old 04-14-2014
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Manual will idle from 700-750, automatic 750-800 warm

Cold idle will be 1,500 on startup then drop, in 3 or 4 seconds, to about 1,000 depending on outside temp, then idle will slowly drop to one of the above as engine warms up.
If cold start doesn't do this then IAC valve is not working.
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  #27  
Old 04-15-2014
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Quote:
Originally Posted by RonD View Post
Manual will idle from 700-750, automatic 750-800 warm

Cold idle will be 1,500 on startup then drop, in 3 or 4 seconds, to about 1,000 depending on outside temp, then idle will slowly drop to one of the above as engine warms up.
If cold start doesn't do this then IAC valve is not working.

Cold start is as advertised. So, the IAC valve is good. Not sure where else to play with the idle at this point. On the way home last night - got the CEL light again.
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  #28  
Old 04-15-2014
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The EVAP leak I think is the aft vent line. This gave me some problems when the tank went back in. I am fairly certain if I retorque that line it will be handled.

The miss-fire - I don't know if I need to worry about this or not. I have reset it, and will wait and see if it comes back.

The MAF - Pisses me off. It has a new MAF and I have checked the wiring. I may need to check it again. I changed the air filter, cleaned the new MAF, and verified all the clamps are tight on the intake. I don't know why this keeps coming back...

I think the last few are because the code reader did not supply any prompts for the KOER test. It didn't state when to push the OD button or when to hit the brake pedal.
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  #29  
Old 04-15-2014
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try adding a full can seafoam to your fuel tank and run the tank near empty

sounds like 1 or 2 partially or nearly clogged fuel injectors
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  #30  
Old 10-12-2017
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Sorry to dig this up, but i'm curious about the idle speed, did you find it was *actually* idling nearer 600 or was that a gauge misread?
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  #31  
Old 10-12-2017
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my engine idles around 625 to 635 RPM if the gauge is correct , that is with the transmission in drive
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  #32  
Old 10-12-2017
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Originally Posted by cheese_man View Post
my engine idles around 625 to 635 RPM if the gauge is correct , that is with the transmission in drive
Idle in park\neutral is the only one you care about unless you're checking an auto box.

Seems there is a different idle reference point for all 3 main engines.
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