2000 4.3 liter with new PCM...and yes I did the security relearn procedure. The security light no longer comes one with key in the run position.

We (my father-n-law and I) aren't getting any spark from the ignition. I know he's changed out the cap and rotor and swears he did it right. There was only one code showing which was the vehicle theft deterent system code, but has been cleared and no longer present or pending in Autotap. No other codes exist.

Now did he totally botch the cap and rotor install or should it still spark from the (a) coil (b) plug wire?

Fuel pressure is good, we just aren't getting any spark.

Thanks.

 

Even if the cap was backwards it would still have fire. the rotor only goes on 1 way. not much there to get wrong. I think somthing is telling it not to spark.

 

I'm heading back out there to look at it today. I'll put a test light on the wires leading to the coil. I'll also double check all fuses. (even though my father-n-law swears they're all good.)

 

just check to see if you have spark at the coil wire. also there is a pink wire going to the coil that seems to always break inside the connector. if you have scan tool make sure you have a reading for rpms while you crank.

 

what gm tech says is true. I have seen both wires break inside the insulation... the pink one and the white one black tracer...

 

I'll be sure to check this..going back out there tomorrow...Step dad decided to work on the boat instead. I'll be sure to check the Pin wire and the white wire. I'll hook the autotap up to see if I even get any rpms while I crank.

If I don't get an RPM reading from Autotap, does this mean that the pink wire or white wire is indeed broken?

does simply splicing/reconnecting the wire work in this case?

Thanks a ton You guys are the best when it comes for help.

 

if you dont have any cranking rpms on the scanner then you have a crank sensor problem

 

if the pink r white wire is borken u will need to replace the whole pig tail

 

the pink wire on the coil is hot when key is on....what does the white/black wire go to? If we hook up a test light to it we get nothing...even with the test lead hooked up to a hot source.

We're thinking the coil itself may be shot unless this white/black wire is suppose to be hot some shape or form.

 

hook a test light to it and spin it over, the test light should blink... another way is to hook an ohm meter the it and the other end goes to the ignition module connector..


Brian