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09-05-2006, 12:32 AM | #1 | |
AF Newbie
Join Date: Sep 2006
Location: westminster, Colorado
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01 trooper code p0440
Help I've already changed out the gas cap cleaned the egr valve and cleaned out both egr ports and tubes. cleared the code and test drove about ten minutes no code. My wife drove it the next day and their it is again. I do not believe their is a problem w/ the egr other wise I would be getting codes like 0441, 0442 pintel out of range ect. what about the canister or purge, vent valves or plumbing. anybody work on thoes systems. thanks D.D.
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09-05-2006, 08:25 AM | #2 | |
Isuzu Guy
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Re: 01 trooper code p0440
how many miles?
You could have a bad EGR (very unlikly but it does happen).
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-Ryan Isuzu Moderator Car Show Tips Operations manager with a results-driven passion for process improvement FAQ 98-04 Isuzu Rodeo, Rodeo Sport, Amigo, Trooper SOLD - NOV2015 - 2000 Amigo, V6, HT winter, ST summer, 2wd |
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09-05-2006, 07:27 PM | #3 | |
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Re: 01 trooper code p0440
She has 62k on her I've hade the code before and cleared it by putting the gas cap on better (more clicks). I've spent alot of time at the library looking at the Alldata data base and it has no ref. to the egr. for code p0440. This code strickly deals w/ vacume applied to the fuel tank through a purge valve and a vent valve and sensed by a vacume switch in the tank. however i guess you need a tech 2 or snap on mt2500 scanner to ckech these componets out unless someone knows how to do it with common tools. thanks for your input anyway.
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09-06-2006, 08:00 AM | #4 | |
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Re: 01 trooper code p0440
Hi, thought you might like to see what the manual says about your code. I think some of the causes are easily checked by you. If they don't help, then each component, like the fuel tank sensor, would have to be checked individually, which might be more than you want to tackle. Good luck.
2001 Isuzu Truck Trooper S 4WD V6-3.5L Vehicle Level Powertrain Management Computers and Control Systems Testing and Inspection Trouble Code Diagnostic Charts P Code Charts P0440 P0440DTC P0440 EVAP System Circuit Description The evaporative system includes the following components:
Conditions for Setting the DTC
Check for the following conditions:
Steps 5 - 11 Test Description Number(s) below refer to the step number(s) on the Diagnostic Chart:
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