No rpms in Drive

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No rpms in Drive

Postby BOW HUNTER » 20 Aug 2014, 17:30

Having an issue with this truck. New fuel injection pump, and swapped out the tps twice. Vehicle revs up fine in park and neutral, but does nothing in any other gear. On both the tps' I tried, could not get the voltage reading between B and C low enough to match the .33 of input voltage. Ie: from 5.00, my target would be 1.65, and the lowest I can adjust tps to is 2.96.
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Re: No rpms in Drive

Postby SgtCathers » 24 Aug 2014, 15:03

Are you saying the RPM gauge doesn't move in gear? or the truck doesn't rev in gear?
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Re: No rpms in Drive

Postby BOW HUNTER » 25 Aug 2014, 16:52

Yes I mean it doesn't rev in gear
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Re: No rpms in Drive

Postby Petz » 20 Jul 2015, 22:47

... Huh? I know this is an old post.

When it's in gear it should rev freely? Does the truck move?

I'm also a bit confused, why are you focusing on the TPS? If it revs fine NOT in gear then it's not the engine or the TPS because the engine does in fact rev when it's not in gear. So we're missing the actual problem you are asking for assistance on.

Have you slowly brought the truck up to wide open throttle (WOT) and held it there for 30 seconds? If it starts to sputter you have a fuel delivery problem and should look for kinked lines or any other possible issue.

If it's sounding like it's all out of tune then the timing on the fuel injection pump is off and you need to "time" it by loosening the three bolts on the injection pump ever so slightly and rotate it until it's running right then tighten the back up...

I hope that helped you out in some way.
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Re: No rpms in Drive

Postby PAPAC22 » 19 Jan 2017, 18:35

Did you guys get a solution to this issue if so what was it. I have a truck with the same issue.
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Re: No rpms in Drive

Postby SUPERMOD » 20 Jan 2017, 04:47

looking into this for you now PAPAC22
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