Urgent Question

ULTM8Z
12-23-2003, 12:52 PM
Guys,

Anyone with access to their 7730 ECM (1990-92 TPI Camaro/Firebird), I could use a big favor. I'm trying to diagnose an idle misfire and I was doing a circuit check on my EFI harness. At the distributor reference wire (ppl/wht stripe on the ECM connector), it's showing .6 volts on mine, but the manual says it should be 2.3 volts (with the engine running).

Could someone please take a voltmeter to that wire on their car and let me know what you see? I'd really really appreciate it.

Thanks in advance.

90rocz
12-23-2003, 01:06 PM
Ignition missfires occur throughout the rpm range...idle misses are usually vac leaks, or valve sealing problems(dirty lifters etc)..