Getting a code 42 even after replacing module and checking connectors.
Thread Starter
Burning Brakes
Joined: Jul 2002
Posts: 871
Likes: 0
From: Costa Mesa CA
Getting a code 42 even after replacing module and checking connectors.
Yeah...
I can't say it's "driving me crazy" but I am stumped at this point.
After spending $66 on a Borg-Warner NASCAR Select ignition module because my fav auto parts place was out of the "cheaper one" and after checking the connectors in the distributor and even soldering a few of the suspected crimped-on wires, I can get the code 42 to clear for awhile but it always comes back, marked by a rough idle.
Any suggestions from anyone what else I can check?
Thanks,
BIG JIM
I can't say it's "driving me crazy" but I am stumped at this point.
After spending $66 on a Borg-Warner NASCAR Select ignition module because my fav auto parts place was out of the "cheaper one" and after checking the connectors in the distributor and even soldering a few of the suspected crimped-on wires, I can get the code 42 to clear for awhile but it always comes back, marked by a rough idle.
Any suggestions from anyone what else I can check?
Thanks,
BIG JIM
Race Director
Joined: Feb 2004
Posts: 12,517
Likes: 19
Re: Getting a code 42 even after replacing module and checking connectors. (BIG JIM 54)
I had this same problem 3 times on different vehicles. The first time it was in fact the module. The second time I had a break in the wire that you disconnect to set timing. Soldered in a new connector and wire. The third time it turned out to be the ecm. I followed the troubleshooting tree in the service manual to find out it was the ecm. If you need further help I can dig out the book and check out the trouble tree and post info
Thread Starter
Burning Brakes
Joined: Jul 2002
Posts: 871
Likes: 0
From: Costa Mesa CA
Re: Getting a code 42 even after replacing module and checking connectors. (Pete K)
Hummmm....
I didn't think to look at the orange wire and the connector. Good idea. Thanks! I didn't know if it was bad it could set a code 42. Cool!
BIG JIM
I didn't think to look at the orange wire and the connector. Good idea. Thanks! I didn't know if it was bad it could set a code 42. Cool!
BIG JIM
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: Getting a code 42 even after replacing module and checking connectors. (BIG JIM 54)
Jim you may have an intermittent open circuit in the EST line to the ECM from the distributor. Use an ohm meter and check all the connections from the distributor to the ECM. You should not have any more than 3 ohms between the two points.
Burning Brakes
Joined: Dec 2002
Posts: 1,088
Likes: 0
From: Lakeland fl
Re: Getting a code 42 even after replacing module and checking connectors. (tjwong)
I had a 42 (or 43- cant remember now) when I changed ECM's. I got some advice here from forum members, checked that damn brown wire a hundred times. Checked all my other connections over and over again. Then I tried another 165 ECM i had a voila, no more code.
Racer
Joined: Jul 2002
Posts: 466
Likes: 0
Re: Getting a code 42 even after replacing module and checking connectors. (SBNova)
I too have code 42 but i almost gave up cause there's almost no cure for it.
The only people that fix it are the ones that change the ecm, but i don't want to start throwing money and then find out that it wasn't the ecm.
The only people that fix it are the ones that change the ecm, but i don't want to start throwing money and then find out that it wasn't the ecm.
Thread Starter
Burning Brakes
Joined: Jul 2002
Posts: 871
Likes: 0
From: Costa Mesa CA
Re: Getting a code 42 even after replacing module and checking connectors. (Damien89)
Yeah, I'm with you.
There's not much chance getting all those 17 year-old brittle plastic plugs replaced so I have hardwired more than one connection, eliminating the connector.
I check things out so much on my car I'm seriously thinking of putting two rocker switches on the instrument panel. One for opening up the EST connection to set timing. The other for grounding the ALDL plug.
Thanks for your help everyone.
BIG JIM
There's not much chance getting all those 17 year-old brittle plastic plugs replaced so I have hardwired more than one connection, eliminating the connector.
I check things out so much on my car I'm seriously thinking of putting two rocker switches on the instrument panel. One for opening up the EST connection to set timing. The other for grounding the ALDL plug.
Thanks for your help everyone.
BIG JIM
