Spark Issue

[LAMMONS0003]

Beside wiring betweenthe components, is there anything keep my t type from sparking besides ignition module/coil, crank sensor, and ECU? my car is exact opposite of cristine it keeps dieing and dieing.

 

[SHADOWII]

Will need ....

more info. put any mod's in your signature. As much info as possible will aid in the diagnosis. Are you MAF or MAF-LESS?

 

[LAMMONS0003]

My car is all stock except a caspers hotwire kit for the ignition module. Its the kit that adapts the 84 to 86/87 stlye module. It has a stock mass air flow sensor also. There are no engine codes present.

 

[Black Power]

So this is a hotair car?

How are you sure it's spark? Or is that just what you think it is? I would look at fuel pressure as well.

 

[LAMMONS0003]

I pretty positive it is spark. I have 39 psi of fuel pressure soon as the key turns the new pump on. I have removed the spark plug wires and grounded them to the engine and cranked over to see no spark at all. I checked 3 or 4 of them to eleminate a bad coil. It appears I have lost all spark. This just happened after I rebuilt the top end of the engine. Break-in ran fine, ran for 4 tenths of mile first test drive lost spark, then let set overnite and ran 1 mile before looseing spark again. I went through a no start ttree and thought I had determined the ignition module as the problem. Thats when I ordered the caspers kit and module. I am goin to get module double check because coils Ohm out fine. I can see RPM with my scan tool when cranking so does that mean I am getting crank sensor signal? i dont know where else it get RPM signal from. My check engine light does light up with key and shows no codes so I believe the ECU is ok.

 

[Black Power]

Good question on the rpm on the scan tool...I don't know. If you have a buddy with a known good crank sensor you might try it just for the heck of it.

 

[aminga]

My powerlogger doesn't read RPM during cranking, never has. I've always assumed that it's looking at the ECM RPM signal which doesn't exist until the engine actually starts. (that's what I assumed anyway)

The factory and aftermarket tach however are connected to the RPM output signal from the ignition module They do see a signal during cranking.

 

[LAMMONS0003]

I can see RPM about 850 rpm on a hand held scan too my brother in law has. This is while cranking.