i blow my motor and had a spear d15b7 motor lying around and trow it in just to have somthing to drive and now the check engine light for the map senser keeps going off and makes it run like **** i already tried swapping out the trottle body with the map senser and straight wired it to the ecu and tried that map sensor the goes on the frame you guys got any ideas why it would be messing up???
motor from my freinds 92 hatch and i put it in my 94 dx coupe

 

are your wires loose?

 

no the wires are not loose and it was running fine with the ls in it any1 got any other ideas??? i think its gods way of telling me single cams are wack lmao

 

what ecu are you using? maybe the sensor is whack...SOHC are killers..

 

i got a obd1 ls computer and i tried a p30 , p28 and p72 and that didt help also i changed the sensor like 3 time

 

why would you be running a dohc ecu on a sohc motor....try a stock ecu for that motor

 

Did you switch the tps and map sensor plugs by accident.

 

yea i already tried switching the map senser and tps
and i dont see why having a dohc ecu on a single cam would make a diffence couse ppl chip p28 ecu's and use them on both dohc and sohc motors ... and yea i tried the stock ecu and it ran worse then with the ls ecu

 

well the thing that people run chipped p28's on DOHC motors is that they burn a base map for the motor. With that done even though having a p28 ecu it could have a gsr base map on it, making it basically a gsr ecu...i say check your wires going to your ecu....i took out my VAFC from my car with a loose wire my Map Sensor came on..then figured it was my wire. rewired it and it runs like a champ again....