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Bad sensor?

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Old Feb 20, 2020 | 11:09 PM
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Question Bad sensor?

today my truck started surging at idle. i figured it was just warming up but when i got onto the road it seemed to be losing power up hills and bucking, the rpms at idle were randomly going from 950 to 500 and also my mpgs are down alot. bad icp? the truck does have a ts-6 chip and the fuel filter might not be to new but it ran perfect yesterday.
 
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Old Feb 21, 2020 | 06:31 AM
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unplug icp and see if it changes anything
 
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Old Feb 21, 2020 | 09:55 AM
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As mentioned unplug the ICP. And see how it does.

If that doesn't work unplug the fuel bowl heater and replace fuse #30 under the dash even if it looks good.
 
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Old Feb 21, 2020 | 10:37 PM
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Got oil in it?
 
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Old Feb 24, 2020 | 12:57 PM
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i replaced icp it was covered in oil it seemed to help but still has the same issues like stalling at stops and running terrible in reverse and surging before dying.
 
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Old Feb 24, 2020 | 02:11 PM
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Did you unplig the fuel bowl heater?
Check the tinman nut on the IPR?
 
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Old Feb 24, 2020 | 05:36 PM
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Unusual amount of smoke out of the exhaust of a certain color?
 
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Old Feb 25, 2020 | 01:47 PM
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Before throwing parts at it pull codes if possible then remove the chip from the PCM and see if that helps.
 
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Old Feb 25, 2020 | 02:06 PM
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Originally Posted by AubieTN
Before throwing parts at it pull codes if possible then remove the chip from the PCM and see if that helps.
Good idea. Drop the negatives off the batteries after pulling codes also and zero everything out.
 
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