ECU or MAP problem
04-23-02, 04:12 PM
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ECU or MAP problem
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.
What is the prcedures for testing the 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.
What is the prcedures for testing the MAP sensor?
04-23-02, 09:02 PM
#2
I dunno the procedures for testing either of these, but one thing you might try is getting another stock ECU from someone just for testing. I'm sure someone on the forum will sell you one or rent you one for testing this out. I don't know anything about MAP sensors, so you're on your own there 
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