MAP Sensor Failure and Engine Misfire
10-06-2006, 08:13 AM
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MAP Sensor Failure and Engine Misfire Put new Heads (Patriot 243) and new cam (Thunder racing .594/.228 112 LSA) in and computer is showing engine misfire and MAP Sensor failure. I changed the MAP Sensor and still get the same code. I even swapped out the PCM from another T/A and still threw the same codes. I am only putting out 335 HP off of this set up when it should be a whole lot more considering that I had 329 HP STOCK!!! Please help I'm at a loss.
10-06-2006, 08:20 AM
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By the way I changed the plugs I am running TR6's I also changed the plug wires and I checked all the wires going to the PCM and going to the MAP sensor and nothing?!?!?
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10-06-2006, 12:46 PM
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Originally Posted by dixonk
What do you mean by mechanical over rev?
he means did you miss a shift, like going from 3rd gear down into second gear, or 4th to 3rd instead of 4th to 5th.
an mechanical over rev can not be helped by the computer... the rev limiter just cuts fuel.. but if you miss a gear is PHYSICALLY pushes your motor to exteremely high RPM's
10-06-2006, 01:07 PM
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No I definetely never did that. What I did was as soon as the parts where put in I let in run and learn for about 20 minutes then I took it around the block not running it hard at all and then straight to the dyno for tuning. From the very beginning since the install I've had the SES light flashing and misfire and MAP codes. I also had a TPS and O2 codes but I replaced them and those codes went away.
