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Old 01-03-2011, 08:08 AM   #1
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Unhappy Solution to Check Engine Lights and also Gas Gauge Broken :(

Good Morning WF

I had a awesome surprise on my way to work this morning, so i leave my house and i get on the highway, in the middle of one of the hills my jeep (YJ) starts loosing power and no pedal response! So even tho my gauge was telling me i have 1/4 left, i ran out . I had about half a gallon in the back of my jeep that helped me get to the gas station but i would like to know if anything can be done (without replacing the fuel pump etc..) and if not ill just have to use the odometer now that i know the problem is there?


My Engine check light is on with the following error codes:

Code Description 12 Direct battery input to PCM was disconnected within the last 50 key-on cycles. --> Will go away
13 No difference recognized between the engine MAP reading and the barometric (atmosphereic) pressure reading at start-up --> ?
14 MAP sensor input below minimum acceptable voltage.
or
MAP sensor input above maximum acceptable voltage. --> For this, i noticed after riding the jeep and hitting bumps in the road, i would check under the hood and the airflow tube that goes from the Air Filter box to the top of the throttle body, will come off on the air filter side. Any effects this would cause??
21 Neither rich nor lean condition detected from the oxygen sensor input.
or
Oxygen sensor input voltage maintained above the normal operating range. --> Replace the Co2 sensor or im off?
33* An open or shorted condition detected in the A/C clutch relay circuit. --> the jeep has heat blowing now so the heat is working fine!
51 Oxygen sensor signal input indicates lean air/fuel ratio condition during engine operation. --> Replace the Co2 sensor or im off? 52 Oxygen sensor signal input indicates rich air/fuel ratio condition during engine operation.--> Replace the Co2 sensor or im off?



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Old 01-03-2011, 08:19 AM   #2
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just for giggles, have you tried a complete power cycling (remove the battery for a few min)? it does look like ECU glitch to me but I might be wrong on that.

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Old 01-03-2011, 08:24 AM   #3
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thanks for a quick reply! i have not tried that but i can give it a go and post the results here!
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Old 01-03-2011, 08:28 AM   #4
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For the gas gauge thing, if you're lucky you can remove the gauges, clean the input ribbon strip, reattach and it may work correctly again. If you're unlucky, the fix means dropping the gas tank.

x2 on a PCM reset.
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