91 Legend No Check Engine Light /no Spark /no Fuel Pump
#1
91 Legend No Check Engine Light /no Spark /no Fuel Pump
91 Acura Legend Sedan 155000 miles
I HAVE NO SPARK AND NO FUEL PUMP NOISE. MY CHECK ENGINE LIGHT DOESNT COME ON OR IS DIM THE BULB IS GOOD CAR WONT START. CRANKS BUT WON'T START.
Repairs Done:
Main Relay
Fuel Pump
ECM
Under The Dash Fusebox
Car still has the same problem. What do I do next?
I HAVE NO SPARK AND NO FUEL PUMP NOISE. MY CHECK ENGINE LIGHT DOESNT COME ON OR IS DIM THE BULB IS GOOD CAR WONT START. CRANKS BUT WON'T START.
Repairs Done:
Main Relay
Fuel Pump
ECM
Under The Dash Fusebox
Car still has the same problem. What do I do next?
Last edited by johndorsey; 01-17-2007 at 01:28 PM. Reason: Forgot to add info
#7
So you're down to a simple no-spark (engine cranks but won't run) problem?
If that's the case, chase the spark back. If you don't have spark at the plugs, see if you have it coming out of the coil (into the distributor). If you DO, then the problem is in the distributor (cap? rotor?). If there's no spark coming out of the coil, then suspect the coil or (more likely) the igniter.
If that's the case, chase the spark back. If you don't have spark at the plugs, see if you have it coming out of the coil (into the distributor). If you DO, then the problem is in the distributor (cap? rotor?). If there's no spark coming out of the coil, then suspect the coil or (more likely) the igniter.
#8
I will check if I have spark again, but I know I dont have fuel. I have a 12v line to the fuel pump that I put to a pos at Ign just to hear the pump kick in. I Think I still have no spark and i know there is no pump but will test spark.
#10
Not exactly sure where the ECM is on a 91 Ledge, but it may be easier to check for the Vref at the TPS on the throttle body. If you have 5V there, you can safely assume that the ECM has good voltage and ground.