Question about Isuzu Cars & Trucks
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Posted on Jan 02, 2017
try haynes.com or your local parts store for a Haynes manual. For around $20 they are frequently as good or better for home mechanic than factory manuals for $100.
Posted on Nov 06, 2008
The only reason I have ever seen for a dead OBDII or DCL while the car still runs is that the ECM has failed and for some reason just marginally functioning enough to appear normal. This is more common than one would think.
I would start by getting even a generic OBDII reader to confirm your work, then pull the battery connections and unplug the ECM from the harness and make sure visually that the conector has no obvious issues then reassemble and retest.
Posted on May 30, 2009
Your SUV is really giving you a hard time, lol. Sorry but I've had those days too.
I would try to check if you have blocked EGR passages. If ok check for restricted MAP sensor vacuum hose/passage or restricted exhaust. I know you replaced the CAT but if the muffler is blocked then there would still be a restriction. Also check the wiring and connection to the MAP sensor.
Posted on Apr 28, 2010
It is very common for many vehicles to drive nicely with the Check Engine light on. This is why so many people simply ignore the light. (BAD MISTAKE)
The true fact is that the computer is trying to tell you that there is a malfunction in one of the many different systems and/or electrical circuits that are monitored by your onboard computer network. Some of the possible malfunctions are simple and do not require much in the way of diagnosis or repair. Other possible problems are not so easy.
At the very least, you are wasting expensive fuel. The engine computer cannot properly maintain the correct air/fuel ratio when there is a system malfunction and the light is on. At worst, you could be causing severe damage to some very high-priced parts of your car(including the engine and/or transmission and catalytic converters) if you continue to operate it with the light on. Chances are very high that the longer you drive it with the light on, the more expensive it will be to fix it when you do finally fix it.
The only way to find out the nature of the failure is to scan your onboard computer network and retrieve the Diagnostic Test Codes (DTCs) (AKA - Fault Codes) that have been recorded as a result of the malfunction. These codes are then used to identify the correct diagnostic and repair procedures.
Posted on Feb 17, 2012
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