Bad Ptu ??

[rob corsa]

had a question my 95 dodge stealth rt dohc na will not start. im getting fuel but no spark on 3 and 6.It will crank but not start i have checked the coils, wires, plugs and they are all good also tested the ptu but, not sure if im doing the test right. i read somewhere that the test will not show if 1 driver is bad and theres noway to test for that,you guys think this is the reason it wont start and any help would be great thanks

[Chris@Rvengeperformance]

FYI these engines will start just fine on as few as 3 cylinders. maybe 2

[rob corsa]

ya just got a new ptu and still wont start or fire on 3 and 6 any ideas guys.
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[Chris@Rvengeperformance]

Did you verify the cam timing?

[rob corsa]

Did you verify the cam timing?
I dont know how to do that. I ended up getting it towed to my mechinc

[speedy25]

also tested the ptu but, not sure if im doing the test right.

The test as described in the manual is correct and will ID a bad PTU. All it does is switch electricity on and off. Sorry you had to spend an extra $100 to find out it really was good.

Improper cam timing throws the crank and cam sensors out of phase and causes the 3-6 to drop out. 1st gen cars also had ECU capacitor problems that caused the same problem.

I hope your mechanic does well and you get back a running car and only an almost empty wallet. :)

-SP