MAP Sensor problem with HP Tuners
05-06-2008, 11:42 AM
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MAP Sensor problem with HP Tuners My MAP sensor is not reading in HP Tuners it just sits at a constant value and doesn't move at all. I tested the sensor with a voltmeter and it read and worked as normal. from terminals A-C it read 5.02v and from B-C terminals it read 4.84v with ignition on and then 2.2-2.3v with car idling, just as it should! But it does not read in HP Tuners and im wondering if my engine PCM is reading it or not. anyone have any similar problems or have any advice? Thanks...
EDIT: my timing advance is doing the same thing. just sits at one constant value and doesnt change at all.
EDIT: my timing advance is doing the same thing. just sits at one constant value and doesnt change at all.
05-06-2008, 02:01 PM
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i just emailed HP Tuners support...
also, with the key on.. the MAP reads 101... then when you start the car it goes to a random number like 65 or 90.. and just stays there until you turn the car off again.. and it goes back to 101....
also, with the key on.. the MAP reads 101... then when you start the car it goes to a random number like 65 or 90.. and just stays there until you turn the car off again.. and it goes back to 101....
05-06-2008, 03:13 PM
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Are you by any chance using one of the custom
multi-bar OSes? I don't know much about V6es but
see the hairdryer in your .sig picture. On the V8
multi-bar OSes there is a special MAP PID added
that you should look at instead of the regular. Can
you display MAP voltage in the scan tool?
multi-bar OSes? I don't know much about V6es but
see the hairdryer in your .sig picture. On the V8
multi-bar OSes there is a special MAP PID added
that you should look at instead of the regular. Can
you display MAP voltage in the scan tool?
05-06-2008, 03:25 PM
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Are you by any chance using one of the custom
multi-bar OSes? I don't know much about V6es but
see the hairdryer in your .sig picture. On the V8
multi-bar OSes there is a special MAP PID added
that you should look at instead of the regular. Can
you display MAP voltage in the scan tool?
multi-bar OSes? I don't know much about V6es but
see the hairdryer in your .sig picture. On the V8
multi-bar OSes there is a special MAP PID added
that you should look at instead of the regular. Can
you display MAP voltage in the scan tool?
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05-08-2008, 05:34 PM
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also i was getting the p0121 code but changed my max and min to 100 and 0 so now that went away. i read a little bit on how having a cam can sometimes effect that tps 0121 code.. i could try another TPS? would a bad TPS cause the MAP to be reading a consistent kpa??
also getting P1374
also getting P1374
Last edited by dmw319; 05-08-2008 at 05:43 PM.
i cant tune my car until i get this figured out!
05-17-2008, 04:22 PM
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If the scanner can't see the real MAP voltage I'd
be looking for a wiring fault, chase the +5V and
GND all the way to the sensor, and the MAP
output all the way back to the PCM connector.
be looking for a wiring fault, chase the +5V and
GND all the way to the sensor, and the MAP
output all the way back to the PCM connector.
05-17-2008, 06:55 PM
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its weird. it reads it as the car is being turned on and off but only momentarily then it sits at a constant value..
my car wont even start now. just cranks and cranks but wont turn over.
EDIT: tried a new ICM today also and still nothing.
my car wont even start now. just cranks and cranks but wont turn over.
EDIT: tried a new ICM today also and still nothing.
Last edited by dmw319; 05-17-2008 at 09:38 PM.
