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dakotadodge
Dodge Dakota
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6/22/2012
21:23:55
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 Subject: code 27 running rich? need help
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Message:
i have a 1994 dakota and its been running really rich. my check engine light is on and it is showing a code 27. i have cleaned the injectors, replaced the fuel pump, regulator, swapped the computer,swapped the evap canister, tps... i need some direction on what to do next? thank you in advance!!!!! this problem has been a pain in the ass, i would love to get my babe back on the road, so i can go off roading again....
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daddio
Dodge Dakota
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6/23/2012
11:44:59
|  RE: code 27 running rich? need help
IP: Logged
Message:
Code 27 - No Manifold Absolute Pressure Change
Sounds like the MAP sensor took a dump. That is why
it is running rich. It is in "Limp Mode".
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dakotadodge
Dodge Dakota
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6/23/2012
21:32:43
| RE: code 27 running rich? need help
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Message:
i ran out side to the garage and changed the map sensor... its still running way to rich... and the engine code is still on. we worked on it today for about four hours and still code 27. do you have any more suggestions? we are running out of things to swap lol lol i have a whole other dakota in the top of my garage that i have been saving parts.... thanks... this problem is insane!!!!thanks for your help
we are thinking of getting another harness from the junkyard and giving that a chance.
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daddio
Dodge Dakota
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6/24/2012
09:26:18
| RE: code 27 running rich? need help
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Message:
Did you try resetting the PCM? How is the vacuum
connector for the MAP sensor? Are you sure the MAP
sensor you installed is good? Disconnect the
positive terminal of the battery and turn the key to
start for a few seconds to reset the PCM.
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dakotadodge
Dodge Dakota
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6/24/2012
23:01:36
| RE: code 27 running rich? need help
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Message:
so we swapped out the injectors with ones we got from the junkyard today... it fixed the problem!!!!
the old injectors were with in spec. 14.4-14.7 ohms but apparently one was not working properly. code 27 One of the injector control circuit output drivers does not respond properly to the control signal. it makes more sense now... injector did not respond to control signal... we were chasing down what was wrong with the control signal and assumed that a good injector reading meant it was fine...
you should check out some of my truck videos on you tube (osamabinyep dakota) we have built a wild 318 dakota.... thanks for your help!!!
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