Isuzu Trooper check engine light and runs bad

Last post on Dec 14, 2008 at 9:29 AM

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What is this discussion about? Isuzu Trooper, Isuzu Trooper II, SUV

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#1 of 1 94 trooper check engine light/ runs bad by mandex Dec 14, 2008 (9:29 am)
I have been dealing with the check engine light on my 94 trooper ...it seems to come on when on the highway then off when i get off the highway...once it does come on my truck runs bad going up hills or when i give it gas past approximatly 1/2 way to the floor basically under a load.....my mechanic says the code keeps coming up lean exhaust, it seems also to be worse when the temp is warm out, and I am not having any starting problems......other than that it runs great until the light comes on which again is on the highway or if i pull my trailer changed cat converter cleaned EGR cleaned injectors changed fuel filter cleaned maf sensor changed o2 sensor checked fuel pressure 94 trooper 5 speed SOHC any suggestions would be greatly appreciated

#1 of 1: 94 trooper check engine light/ runs bad by mandex; Dec 14, 2008 (9:29 am)

I have been dealing with the check engine light on my 94 trooper ...it seems to come on when on the highway then off when i get off the highway...once it does come on my truck runs bad going up hills or when i give it gas past approximatly 1/2 way to the floor basically under a load.....my mechanic says the code keeps coming up lean exhaust, it seems also to be worse when the temp is warm out, and I am not having any starting problems......other than that it runs great until the light comes on which again is on the highway or if i pull my trailer
changed cat converter
cleaned EGR
cleaned injectors
changed fuel filter
cleaned maf sensor
changed o2 sensor
checked fuel pressure
94 trooper 5 speed SOHC

any suggestions would be greatly appreciated