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2002 Isuzu Trooper - Engine Stutter Issue
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IzzyTheIsuzu
New User
Dec 11, 2013, 9:48 AM
Post #1 of 4
(2285 views)
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2002 Isuzu Trooper - Engine Stutter Issue
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2002 Isuzu Trooper
3.5L Automatic TOD Transmission
192,000 Miles
Idle RPM ~750
Oil Status, definitely needs a change!
Just bought the SUV fairly recently, went 3 days and 150-odd miles with no issues with the car at all, which was good for an as-is no warranty purchase. A lot of problems tend to present themselves early. However, now the car has a bad engine stutter. I was driving home one day and out of the blue the engine started to shake a bit. The only code the car pulls, even while actively stuttering is P0405 which is the EGR Valve.
I've not been able to check much, the car is foriegn to me (only owned vehicles 1966 to 1998) and it is hard to tell left from right in the engine compartment. Too many electronics!
I have the OBD2 diagnostic report if needed.
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 11, 2013, 9:52 AM
Post #2 of 4
(2279 views)
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Re: 2002 Isuzu Trooper - Engine Stutter Issue
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It sounds like it's misfiring but you're probably going to have to drive it a little longer until the computer recognizes the issue and sets a code to identify which cylinder it is.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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IzzyTheIsuzu
New User
Dec 11, 2013, 3:22 PM
Post #3 of 4
(2249 views)
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Re: 2002 Isuzu Trooper - Engine Stutter Issue
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Update:
Drove it around a little more, still no more codes. It has started doing it more frequently when the vehicle is in idle. So far I have been told it could be---
Spark plugs, spark plug wires, a vacuum line, a bad cylinder, a bad multimeter, a soiled fuel filter, a fuel pump issue, a pinch in the fuel line, and about 4 other things.
Any ideas where I should start based on the issue without codes to help out? Tried taking it to a mechanic and they were going to charge $100 just to diagnose the problem.
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Discretesignals
Ultimate Carjunky
/ Moderator
Dec 11, 2013, 7:46 PM
Post #4 of 4
(2236 views)
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Re: 2002 Isuzu Trooper - Engine Stutter Issue
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If it was a fuel problem, such as low fuel pressure, the engine wouldn't have any power during acceleration or wide open throttle. Ignition related problems, would cause misfiring that would be apparent under load or occurring at all ranges. A vacuum leak can cause a rough idle. The EGR code is a low voltage code. The EGR valve has a sensor inside it that is used to monitor the position of the pintle. The pintle is opened and closed by the engine computer to regulate the amount of exhaust gas recirculation. Kind of odd the EGR code popped up when you started have issues, but that could be a coincidence or maybe it was the EGR connector was unplugged with the engine running at one time. An EGR that is not closed all the way can cause rough idling.
Best thing to do in your circumstance is to take it to a repair shop and have them do some diagnostics. Scan tool data would probably give them a clue where to look for your problem. A good drive-ability tech should be able to figure out your issue and save you money in the long run.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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