Question about 1989 Isuzu Pickup 2WD
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Posted on Jan 02, 2017
Wow you have replaced a lot of stuff. Lets go back to the Fuel pump. When you replaced it did you replace the hose between the pump and the sending unit. These are common for splitting. Have you hooked up a fuel pressure gauge to check what pressure you have? It should be real close to 13 psi and should raise to at least 18 or 19 when you pinch off the return line.
Posted on Jun 02, 2009
You need four things for an engine to run. 1. fuel 2. spark 3. compression 4. timing (spark at the right time. By your post it seems you have fuel and spark and you probably have compression unless you blew a head gasket. That leaves the timing. Check the timing and/or the timing belt or chain whichever you have.
Posted on Aug 07, 2009
After market spark plugs could be the problem.
Reinstall the old plugs and see if that fixes it.
This vehicle has an ion sensing ignition system and is real sensitive to the proper spark plugs. I would get the proper plugs from the dealer if the old ones work.
The codes P1311 and P1312 are ion sensing codes.
Posted on Oct 19, 2009
SOURCE: 1996 isuzu rodeo keeps reading
A misfire alarm typically means the coil pack mounted above the sparkplug indicated in the misfire had gone defective.
To test it, swap the coil pack with another cylinder, and see if the misfire goes from #2 to the cylinder you put it on.
If the misfire continues to be on #2, then consider changing the sparkplugs.
I hope this helps.
Posted on May 15, 2011
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