I'm stumped

Reply Subscribe

Thread Tools

Search this Thread

Jan 7, 2005 | 12:09 PM

bigbronc89

Thread Starter

New User

Joined: Jan 2005

Posts: 9

Likes: 0

I'm stumped

My bronc died on me while driving home. just quit right in the middle of an intersection. It's not so bad that it died, it's an '89 302 4-speed, w/ 171,000, the worst part, a chev pulled me home. But anyway i've been troubleshooting and reading on here, but to no success. NO SPARK. I've replaced the hall switch inside the dist, tested the IM, its good, replaced the coil, the little suppessor right by the coil, even replaced the ignition switch like my shop manual said, still nothing. visually inspected connections and all look fine. Multimetered IM harness voltage=4v first pin,12-13v second pin and 0.1v third pin. Tested coil harness and very little there like 4v positive side. I'm going to check grounds right now, but any ideas are helpful. I think I might be looking at a new PCM, but would like to avoid if possible. Thanks

Jan 7, 2005 | 06:52 PM

JBronco

Postmaster

Joined: Jun 2001

Posts: 2,809

Likes: 3

From: Loveland, CO.

This happened to me. It turned out that a hot wire running through one of the harnesses that are mounted under the hood on the driver's side fenderwell was broken, inside the plastic plug. I went through much of the same troubleshooting that you have done before checking the harnesses, it was process of elimination. So check it out.

Jan 7, 2005 | 08:42 PM

aurgathor

Cargo Master

Joined: Aug 2004

Posts: 2,899

Likes: 2

From: Lynnwood, WA

I've heard the ignition module is prone to failure up until 90's before it was moved further away from the engine.

Jan 7, 2005 | 09:13 PM

JBronco

Postmaster

Joined: Jun 2001

Posts: 2,809

Likes: 3

From: Loveland, CO.

Quote:

Originally Posted by aurgathor

I've heard the ignition module is prone to failure up until 90's before it was moved further away from the engine.

It's a good thing to check. It was my first thought when my truck did that, even though it turned out to be something else.

Jan 8, 2005 | 06:47 AM

BigRedBronc

Senior User

Joined: Dec 2003

Posts: 404

Likes: 0

From: Groton, CT

Yup, ignition module quit on me much the same way. No warning, no sputtering, just stopped. Had no spark. Tested module at parts store and it was completely dead. After replacement Bronc started right up and ran like a champ.

Jan 8, 2005 | 10:19 AM

tex94F250

Posting Guru

Joined: Nov 2004

Posts: 1,467

Likes: 0

From: N. Gwinnett Co. Georgia

Ditto, ignition module. Just take it and get it tested to verify.
Tex

PS There's no shame in pushing a Chevy along with a chain.

Jan 8, 2005 | 10:41 AM

Black Ford XLT

Fleet Mechanic

Joined: Aug 2002

Posts: 1,568

Likes: 33

From: Swansea SC

Ignition and module

My module failed on me in the cooldest of winter f-150 There was a recall on them up to early 90s good luck and glad ya pushed that chevy with no problems them chains do wonders. TR