95 7.3 won't rev past 1200RPM - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 21 (permalink) Old 11-07-2012, 04:38 PM Thread Starter
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95 7.3 won't rev past 1200RPM

Ok so I have a 95 cc dually 7.3 diesel that starts up and idles fine sounds good. When I put into drive or even in neutral or park it won't rev passed 1200RPM? I just replaced the IPR, CPS 3 times and oil, oil filter, no leaks anywhere IDM also replaced with 2 known good ones? Does anyone know what this could be? Is it something db I overlooking? Thanks for the help


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post #2 of 21 (permalink) Old 11-07-2012, 04:57 PM
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Re: 95 7.3 won't rev past 1200RPM

have you checked fuel pressure/fuel filter?
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post #3 of 21 (permalink) Old 11-07-2012, 10:07 PM Thread Starter
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Fuel filter is semi new and at the fuel bowl pressure is about 50psi from the valve..


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post #4 of 21 (permalink) Old 11-08-2012, 01:51 AM
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Re: 95 7.3 won't rev past 1200RPM

Fuel filters would cause the problems

92 superduty cummins 5 speed dump
96 f250-550 cclb cummins 5 speed
97 f350 cclb 2wd cummins auto
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post #5 of 21 (permalink) Old 11-08-2012, 02:44 AM
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Re: 95 7.3 won't rev past 1200RPM

use a multi meter or a scan tool to see the voltage output of your pedal position sensor(TPS). should be somewhere around under 1v at idle pos and just below 5v.
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post #6 of 21 (permalink) Old 11-08-2012, 02:48 AM Thread Starter
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Ok where should I measure the voltage from on the tps, which wires..
I will check that tomorrow if this snow holds off and I will replace the fuel filter with a new one... Let me know thanks
Key on engine off for the tps test?


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post #7 of 21 (permalink) Old 11-08-2012, 02:53 AM
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Re: 95 7.3 won't rev past 1200RPM

not sure colors but there is usually a 5v reference, signal out and a ground. soonest i can get to a wiring diagram is tomorrow morning.
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post #8 of 21 (permalink) Old 11-08-2012, 04:25 PM Thread Starter
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Thanks so much, I will check later this afternoon and go from there hopefully I can find something out. I am assuming key on engine off or engine running?


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post #9 of 21 (permalink) Old 11-08-2012, 08:19 PM
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Re: 95 7.3 won't rev past 1200RPM

KOEF "key on engine off"
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post #10 of 21 (permalink) Old 11-08-2012, 10:09 PM Thread Starter
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I checked the wires and I am getting 5v but doesn't the check have to be after the tps? Bc testing tue wires before the tps is jus telling me its getting what it wants to the tps how do I verify if its working??? Here is a video check it out and let me know...

http://i128.photobucket.com/albums/p...98168348E4.mp4


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