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99 cummins revs up

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Old 02-08-2017, 05:38 AM
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99 cummins revs up

i have a 99 cummins 3500 5spd and when u start it it idel fine but when u hit the gas it just revs up and wont come down u have to kill the truck it has a code for apps sensor so i replaced it 2 times cleard the code and start back up and same thing revs up then code comes back on can it be the ecm thats bad on it i do thank yall for the help.
Old 02-08-2017, 02:51 PM
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Originally Posted by sshane
i have a 99 cummins 3500 5spd and when u start it it idel fine but when u hit the gas it just revs up and wont come down u have to kill the truck it has a code for apps sensor so i replaced it 2 times cleard the code and start back up and same thing revs up then code comes back on can it be the ecm thats bad on it i do thank yall for the help.
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Old 03-24-2018, 02:55 PM
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Originally Posted by sshane
i have a 99 cummins 3500 5spd and when u start it it idel fine but when u hit the gas it just revs up and wont come down u have to kill the truck it has a code for apps sensor so i replaced it 2 times cleard the code and start back up and same thing revs up then code comes back on can it be the ecm thats bad on it i do thank yall for the help.
I have a similar issue. Mine starts and idles fine. But when you hit the gas it shoots rpms to 2500 to 3000 then comes back down to a normal idle. Have you fixed your issue yet
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