MAP sensor
 

What is the symptoms of a bad MAP sensor

Here is why I ask, when my car reaches positive manifold pressure the computer will shut the fuel injectors off or I will get something like fuel cut. However the fuel pump operates normal. In order to keep my car running I ran a hot wire to keep the fuel pump on to supply the engine with fuel for now. It seem like the main EGI or the Open circuit relay deenergizes from the ECU after start up; the engine will run for about 3 seconds and shuts off.

Could this be a bad MAP sensor or a Bad ECU

remember the car will operate semi normal when I run a hot wire to energize the fuel pump.

You could tell us what kinda car you got?



-Ted

Ok sorry its a 93 FD manual trans

Re: MAP sensor
 

bypass the stock fuel pump resistor..(heat sink rectangular box underneth the brake booster)

good luck!]