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#1
10-17-2009, 08:23 PM
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1992 jimmy problem HELP!!!!!!!!!
Got a 1992 jimmy with the 4.3L without vortec, its hard to start misses and you have to push the gas pedal down and hold it down until it warms up but once warmed up seems to run fine, has alot of gas smell to it. Changed plugs, wires, rotor button, dist. cap, oxygen sensor, MAF, and changed the oil and filter, none of it seems to help!!!! Anyone got any suggestions on what I need to do next, Thanks!!!
Last edited by rottiewoman24501; 10-17-2009 at 09:54 PM. 
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#2
10-18-2009, 11:17 AM
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Re: 1992 jimmy problem HELP!!!!!!!!!
Quote:
Computer check with a scanner on air tempt and engine tempt and TPS and map sensor to pcm readings would be a great help. Any of them bad can cause rich running and starting problems.
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Remember proper testing gives us the answer to many problems. MT
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#3
10-29-2009, 06:48 PM
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Re: 1992 jimmy problem HELP!!!!!!!!!
possible cpi gone bad if it has it.
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95 jimmy. Vortec V6. 4.3 liter CPI. ,2.5" catco cat, 2.5" cat back with flowmaster muffler split rear., 40 street series, 2 12" audiobahns in custom box,K&N CPI intake system. 71 Mustang coupe- project car. stock 302 with Cobra intake, holley 650dp, afco racing radiator, headman headers, msd distributor, 2.5" from the headers.C4 tranny with shift kit, Mach 1 body lay out. 90 cav, 2.2 tbi, gas getter. 99 chevy s10 zr2, 6" lift, duel exhaust. 5 speed.
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#4
10-30-2009, 12:17 PM
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Re: 1992 jimmy problem HELP!!!!!!!!!
Vortecs didn't arrive until 1996 model year along with OBD-II. You likely have a Throttle Body Injection (TBI).
Check these three things: 1) Idle Air Control (IAC) valve, 2) Exhaust Gas Recirculation (EGR) valve, and 3) Engine Coolant Temperature (ECT) sensor. I'd also make sure you don't have any vacuum leaks...grab some carb cleaner and spray around the TB stack under the air cleaner. When the engine stumbles, where you sprayed is the leak. Finally, make sure the coil is putting out a good hot-blue spark & test the resistance against the specs. Hope this helps!
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Current Garage: 2009 Honda CR-V EX 2006 Mazda 3i 2004 Chevrolet Silverado 2500HD 2003 GMC Envoy XL 2000 Honda ST1100 2000 Pontiac Sunfire Vehicle History: 2003 Pontiac Vibe AWD - 1999 Acura Integra GS - 2004 4.7L Dakota Quad Cab 4x4 - 1996 GMC Jimmy 4wd - 1995 Chevrolet C2500 - 1992 Toyota Camry LE 2.2L - 1992 Chevrolet S10 Ext. Cab 4.3L - 1995 Honda ST1100 - 1980 Yamaha XS400 - 1980 Mercury Bobcat.
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#5
10-30-2009, 11:01 PM
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Re: 1992 jimmy problem HELP!!!!!!!!!
Not to be nitpicky, but he said he didn't have Vortec, therefore he must have TBI.
However, most people call the CPI injection motor Vortec, since it says that on the top cover. That started in '92.
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1993 Olds Bravada 4.3L CPI 1999 GMC Safari SLE AWD 2002 Chevy Astro LT AWD
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#6
11-01-2009, 08:24 AM
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Re: 1992 jimmy problem HELP!!!!!!!!!
If the ignition timing was checked, you might want to verify that the connector for the wire you have to disconnect is re connected. (Under the dash on the right side behind the glove box).
Last edited by dracer398; 11-01-2009 at 08:25 AM. Reason: typo
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#7
11-01-2009, 09:10 PM
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Re: 1992 jimmy problem HELP!!!!!!!!!
forgot to mention to check engine coolant temp sensor.
__________________
95 jimmy. Vortec V6. 4.3 liter CPI. ,2.5" catco cat, 2.5" cat back with flowmaster muffler split rear., 40 street series, 2 12" audiobahns in custom box,K&N CPI intake system. 71 Mustang coupe- project car. stock 302 with Cobra intake, holley 650dp, afco racing radiator, headman headers, msd distributor, 2.5" from the headers.C4 tranny with shift kit, Mach 1 body lay out. 90 cav, 2.2 tbi, gas getter. 99 chevy s10 zr2, 6" lift, duel exhaust. 5 speed.
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