2.3L ('83-'97) Misfire help

[91red]

I have a 91 custom with the 2.3 and it’s missing pretty bad barely smooths out with rpm and replaced coils plugs and wires and injectors and fuel pressure regulator and it just won’t fix

 

[alwaysFlOoReD]

Just read on another thread where they fixed a misfire caused by a bad injector connection.

 

[91red]

Just read on another thread where they fixed a misfire caused by a bad injector connection.

I pulled the whole injector harness and and nothing is is sparking off each other was it the connector that went bad ?

 

[alwaysFlOoReD]

Yes, the catch had broken off and the connector was loose.

 

[RobWigglezz]

Unfortunately, you could still be working with a faulty new part.

With it stumbling, spray something flammable in the throttle somehow to see if it smooths out. If it does there's something else going on with fuel delivery.

You could have a bad coolant sensor also. I think the temp gage and ECU (probably 2 wires) both have their own so your gage would still work.

If that does nothing, throw a timing light on and see if it's holding steady on the damper.

 

[91red]

Unfortunately, you could still be working with a faulty new part.

With it stumbling, spray something flammable in the throttle somehow to see if it smooths out. If it does there's something else going on with fuel delivery.

You could have a bad coolant sensor also. I think the temp gage and ECU (probably 2 wires) both have their own so your gage would still work.

If that does nothing, throw a timing light on and see if it's holding steady on the damper.

How would I check with a timing light ?

 

[91red]

I also forgot to say I put a new timing belt and retimed the motor