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GMC Jimmy Engine Codes

10 messages,  Last post on Oct 05, 2009 at 8:37 PM

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What is this discussion about? GMC Jimmy, GMC S-15 Jimmy, SUV

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#4 of 10 02 heated oxygen sensors by fishing1 Jun 12, 2007 (5:31 am)
I have a 1998 4.3 letter Jimmy. I did a code read on it and it say PO147, heater circuit malfunction, bank 1 sensor 3. How do I know which sensor it is? I know they are on the exhaust system and there is at least 3 or 4 of them. Replies to this message: repairdog (Jun 12, 2007 9:22 am)
#5 of 10 Re: 02 heated oxygen sensors [fishing1] by repairdog Jun 12, 2007 (9:22 am)
Replying to: fishing1 (Jun 12, 2007 5:31 am) Bank 1, sensor 1 is the first sensor on your driver side closest to the engine. Bank 2, sensor 1 is the front pass side. Bank 1, sensor 2 is the pre-cat (in front of)sensor. Bank 1, sensor 3 is the rear most or post-cat sensor.
#6 of 10 91 jimmy hesitation by keltecbob Oct 24, 2007 (12:52 pm)
My son has a 91 s15, with TBI. it has started to hesitate when driving. It seems to idle fine, then on acceleration almost dies out, but if you backoff on normal accel it will slowly accelerate and shift gears. I've changed rotor,dist.cap, plugs, fuel filter, check resistance of wires. Also had a code of 44, replaced with new o2 sensor. Looking into the throat of carb I can see fuel spraying from both injectors. Don't really want to continue just replacing parts needlessly. Thinking maybe the throttle position sensor but don't know how to check the sensor properly. Also fuel pump maybe but it seems to be gettin lots of fuel when I run the accelerator up. Any ideas would be really helpful.
#7 of 10 PO442 CODE by SSG402MP Nov 25, 2008 (2:15 pm)
I have been fighting check engine codes for a year now and need some help. I have a 1998 Jimmy. It had a PO446 code for the longest which we replaced just about everything we can think of. We finally replaced the Charcoal canister and now we have a PO442 code. We smoked the system and found a small leak at the canister hose. We fixed that and it is still coming back with the PO442. Any suggestions? Thanks.
#8 of 10 Heater not getting hot enough by runninbear Dec 16, 2008 (3:57 pm)
I own a 1999GMC Jimmy with 114,000 moiles and it's lke new--has a new ac compressor but the heater is not getting near hot enough--no heater core leaks and no check engine light on and vents not stopped up. Please help with any suggestions or ideas---thank you
#9 of 10 2001 jimmy gmc emmision code by tica1 Mar 04, 2009 (5:34 pm)
I cant pass the emission test because of code p0410 how can i fix this problem.
#10 of 10 1994 jimmy 4x4 switch no power by ron_a_tron Oct 05, 2009 (8:37 pm)
My wifes 94 jimmy had the transmission and transfer case rebiult a year ago, all was fine. 4x4 was engaged approx 10 times over the winter. a few months ago the rear wiper started to act up, and then lost all power. The rear wiper and the 3 way 4x4 switch run of the same power ( this is only my guess). both lost power at the same time.   Where do i start ? thinking im going to try and feed the 4x4 switch with a power or test for continuity.

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