Car not starting

p8ntman442 · Post by **p8ntman442** » Tue Oct 31, 2006 11:31 am

your codes are probably from trying to start the car, without the sensors plugged into the ecm. Clear them and try again.

Shaun41178(2) · Post by **Shaun41178(2)** » Tue Oct 31, 2006 6:29 pm

Fixed the IAC and such. CLeared the codes. Pulled up a code 42. It idles really rough. Wants to stall when cold all thetime. Sounds like its firing on one cylinder too. 42 is the EST, which is somethign in the ignition. Could be the module not sure.

firewall side manifold glows red but not the trunk side, but no vacuuum leaks.

Throttle is rough till about 3500 rpm and then clears up higher then that and runs smooth.

whipped · Post by **whipped** » Tue Oct 31, 2006 8:34 pm

What ECM?

Generic:

42 The EST signal did not change when the ECM applied bypass voltage to the ignition module.

Could be bad wire or a bad module... maybe check for connector corrosion

For manifold glowing - You're 100% you don't have any vacuum leaks? Are your injectors new? Is it possible you squished an injector wire between the engine and trans?

Shaun41178(2) · Post by **Shaun41178(2)** » Tue Oct 31, 2006 10:33 pm

The only place I could have a vacuum leak is at the injector o ring itself. I have every other vacuum source plugged off except for the map sensor. Also I put my hand over my tb and the motor died. I have had vacuum leaks before and if I plugged the tb the motor would still run. This dies instantly confirming my no vacuum leak suspicion. It is hard to tell though with it farting and popping so bad though. Like I said its firing almost on 5 cylinders. Just sounds rough at low rpm and clears up at around 3500.

THe timing could be off on teh motor as I haven't checked that yet since it idles really rough. It sounds like it has a huge duration cam of it. I got a vid/soundbyte of it just have to post it up.

I haven't pulled the module yet to swap it out. It gets dark way too early now and I don't feel like working on it in the dark. Thats when mistakes are easy to make and not know it.

Shaun41178(2) · Post by **Shaun41178(2)** » Tue Oct 31, 2006 11:11 pm

Here is the really dark video. Done for sound not video.

http://www.shaun.saturnet.net/pics/Videos/idle.MOV

Jinxmutt · Post by **Jinxmutt** » Tue Oct 31, 2006 11:19 pm

Disconnect the batt. Unplug all the ignitions wires (module side and coil side). Plug them back in, hook up the battery. Don't laugh. Worked everytime I had a code 42. (Its usually the 4wire plug)

whipped · Post by **whipped** » Tue Oct 31, 2006 11:22 pm

bad module would explain it running bad... wouldn't explain one bank running lean (or rich)... Take a can of carb cleaner and spray it around your intake checking for changes in the idle sound. Don't catch anything on fire...

change the module first though

edit- you set timing with a light, right?

Kohburn · Post by **Kohburn** » Tue Oct 31, 2006 11:24 pm

you got a harley in that thing? :la:

p8ntman442 · Post by **p8ntman442** » Thu Nov 02, 2006 6:20 pm

I got a code 42 when my white wire on my ign. mod. 4 pin connector was bad. Farthest wire to the right. Check that.