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1HD-T rpm

Tech Talk for Cruiser owners.

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Posts: 329
Joined: Tue Jun 28, 2005 3:08 pm
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1HD-T rpm

Post by Badass Bundy »

Hi guys

I have a 1991 1HD-T with 355000 on the clock. I took it for a drive today and noticed when I was stationary, the rpm would be on 0. But when got moving again it would jump up higher. Sometimes it would flick from 0rpm to higher rpm. The engine is not playing up at all.

Any help to diagnose the problem would be great.
80 Series 1HD-T
Front and Rear Factory Lockers
Rear drawer system with fridge slide
10,000Lbs Winch
Built for touring
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Re: 1HD-T rpm

Post by ledgend80 »

not 100% sure where the tacho pichup is from some are from the fuel pump others can be from the alternator
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Re: 1HD-T rpm

Post by bj on roids »

ledgend80 wrote:not 100% sure where the tacho pichup is from some are from the fuel pump others can be from the alternator
I thought pump
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Re: 1HD-T rpm

Post by old ed »

tacho pickup is in the injection pump between the pump and the block. I'd check all the wiring connections before I took the sensor out.
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Re: 1HD-T rpm

Post by Badass Bundy »

Cool thanks guys. Will look at it today.
80 Series 1HD-T
Front and Rear Factory Lockers
Rear drawer system with fridge slide
10,000Lbs Winch
Built for touring
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