Going back to CCC

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May 20, 2012 | 01:53 PM

#51

Camaro305SB

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Member

Joined: Jan 2007

Posts: 446

Likes: 1

Car: 87 Camaro

Engine: 305 LG4 (H)

Transmission: 700r4

Axle/Gears: 2.73

Re: Going back to CCC

Yea wouldn't hurt to see if its shorted internally at the ECM instead of prodding at the harness. Its definately 5v on the signal wire at the connector with it unplugged. I'll check it at the ECM. Should be ~0.5v just keyed up right? If the ECM is unplugged will I get any voltage coming out of it at the TPS signal terminal (coming out of the ECM) or do I need to probe it plugged in?

Edit: I snipped the signal wire a few inches out of the ECM and the tech1 still read 5V. Guess I'm looking for an ECM now...

Last edited by Camaro305SB; May 26, 2012 at 03:23 PM.

Jun 7, 2012 | 01:10 PM

#52

ZZ3 Z28

Senior Member

Joined: Oct 2011

Posts: 638

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From: Chicagoland area

Car: 1986 Z28

Engine: ZZ3

Re: Going back to CCC

Just in case some one else needs more 411 on a Q-Jet, here are pics of my original to the car 1986 Rochester Q-Jet 17086004 0246 JMY with original GM HEI distibutor 1103460. EGR is deleted and so is LG4 replaced with a ZZ3.