2003 cumming 5.9 problem. need help

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Old 07-11-2009, 10:41 PM
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they said for you to also check the AIT sensor, the one on the intake tube just after the air box. Something about it is one of the few sensors that do not always throw codes when messed up or unplugged and can cause similar problems.
Old 07-12-2009, 09:48 PM
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Possible boost sensor, need to check with scanner, throttle position sensor, also check brake switch. If brake switch stays on while accelerating computer will shutdown throttle input. Computer thinks throttle is stuck open, this happens with left footed brakers.


thats all the help i can give/been told to ask
Old 07-14-2009, 09:21 PM
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Thanks, ill take a look at it, hopefully this is the problem.
Old 07-14-2009, 10:14 PM
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Originally Posted by Jeteys5.3
Possible boost sensor, need to check with scanner, throttle position sensor, also check brake switch. If brake switch stays on while accelerating computer will shutdown throttle input. Computer thinks throttle is stuck open, this happens with left footed brakers.


thats all the help i can give/been told to ask

this will also happen when you have a shitty trailer harness install .. it will back feed on the brake wire ... thinking the brakes are applied
Old 07-15-2009, 06:36 AM
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thanks, ill check all this out
Old 07-18-2009, 03:50 PM
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ait sensor was bad, its fixed now and runs perfect. i would like to thank everybody for the help i recieved. thanks alot
Old 07-18-2009, 09:58 PM
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no problem
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