No 5v Reference, Need Help

[djcaz_aom]

Okay, here is the situation.

I have a 92 5speed that won't start. It turns over, but no spark. I have checked and or changed out the following:

- New coil
- New distributor
- New engine harness
- Changed out ECU

So, I believe that I have been trying to fix the result of something else that is causing a no spark. In checking things out of the blue is when I noticed that the MAP sensor did not have a 5v reference. So I looked at the wiring diagram and saw that the TPS also feeds off the same wire.

Checked the TPS connector and the same thing. So I suspected bad wire. I checked at the ECU and still the same. Changed out the ECU. Same.

Does anyone have any idea what would cause the ECU to not send the pulse to the Ignitor in order for it to create a spark at the coil?

Just so you all know, the ECU works in another car. Same for the coil and dizzy.

I need some help on this one. If not, the car is going to the junker.

[PR CB7]

haynes manual does wonders


both 5v reference and sensor ground which is the green and white wire power the tps and map

check continuity from the black and yellow wire to the FB

[wed3k]

check for power and ground for the ecu.

[DRAGON JOEY]

[SIZE="3"]WE GOT IT!!!!!!!!!!!!!!!!!!!!!! HAD AA LOT OF BURNT WIRES HAD TO REPAIR THEM AND NOW IT STARTS BEAUTIFUL...DAMN THIS CAR GAVE US HEADACHES...LOL BUT WE MADE IT THROUGH...[/SIZE]

[Boost_Lee]

good to hear!

[pninja82]

ARE YOU SERIOUS!!!???? Anthony might get so happy and excited his cars back, he might have a heart attack.Good job on that one !!