View previous topic :: View next topic |
Author |
Message |
sheltonw3 Member
Joined: 08 Dec 2008 Posts: 49 Location: Now Residing in Hellfire and Brimstone
1991 Pontiac Trans Am
|
Posted: Sat Dec 31, 2011 7:13 pm Post subject: EGR Digital control issues!?!?!... |
|
|
last night I was out with a friend in his car a 91' 3.1 and the car dropped power and stalled out and there was no service engine soon light and prior to this we had the hood open and noticed during warm up the EGR valve shot a couple of sparks and surge up a bit and it smoothed itself out and ran nice and then 30 minutes later across town it dies and to make matters worse the EGR works with the ECM and we had no heat for 3 hours waiting for the slowest ever tow truck to pick us up!...
so right now we both have no money til later in the month and I am wondering if the digital EGR can be reconditioned or does it have to be replaced with a new one??
I checked all fuses and they are all good, no burned fusible links, the alternator is still fairly new, the car cranks but no turn over and no S.E.S.!
thanks in advance! _________________ Its not a question of how fast can it go?...its a question of how fast do you wish it to go? |
|
Back to top |
|
|
chevymad Master B
Joined: 11 Jan 2004 Posts: 5474
1987 Pontiac Formula
|
Posted: Sat Dec 31, 2011 7:33 pm Post subject: |
|
|
Should run with an SES light on.. if you just unplug it. Otherwise there's some other issue, or it has caused another problem. |
|
Back to top |
|
|
aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
|
Posted: Sat Dec 31, 2011 7:37 pm Post subject: |
|
|
Does the SES light blink very briefly and then stay lit with KOEO?
Has the car been sitting for awhile? Or sitting outside in the rain? |
|
Back to top |
|
|
sheltonw3 Member
Joined: 08 Dec 2008 Posts: 49 Location: Now Residing in Hellfire and Brimstone
1991 Pontiac Trans Am
|
Posted: Sat Dec 31, 2011 9:42 pm Post subject: |
|
|
aaron_sK wrote: | Does the SES light blink very briefly and then stay lit with KOEO?
Has the car been sitting for awhile? Or sitting outside in the rain? |
We get no light at all and it was a daily driver for years until recently and it has been raining recently more and the car does stay out , no garage! _________________ Its not a question of how fast can it go?...its a question of how fast do you wish it to go? |
|
Back to top |
|
|
sheltonw3 Member
Joined: 08 Dec 2008 Posts: 49 Location: Now Residing in Hellfire and Brimstone
1991 Pontiac Trans Am
|
Posted: Sat Dec 31, 2011 9:46 pm Post subject: |
|
|
chevymad wrote: | Should run with an SES light on.. if you just unplug it. Otherwise there's some other issue, or it has caused another problem. |
According to my shop manuals the EGR runs with the ECM and it states that if the EGR craps out the ECM will shut down!...so when I turn the key no SES, I don't hear the fuel pump priming , the securty light goes off , I turn the key and it cranks but no turn over. _________________ Its not a question of how fast can it go?...its a question of how fast do you wish it to go? |
|
Back to top |
|
|
aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
|
Posted: Sat Dec 31, 2011 10:23 pm Post subject: |
|
|
sheltonw3 wrote: | my shop manual ... states that if the EGR craps out the ECM will shut down |
Come again?
Did you check the fuse in the clip next to the battery? |
|
Back to top |
|
|
sheltonw3 Member
Joined: 08 Dec 2008 Posts: 49 Location: Now Residing in Hellfire and Brimstone
1991 Pontiac Trans Am
|
Posted: Sat Dec 31, 2011 10:38 pm Post subject: |
|
|
Too late now and toooo cold , gotta wait til tomorrow to look. _________________ Its not a question of how fast can it go?...its a question of how fast do you wish it to go? |
|
Back to top |
|
|
Al Hasse Member
Joined: 19 Nov 2005 Posts: 4379 Location: Bremerton, WA
1992 Chevrolet Camaro RS
|
Posted: Sun Jan 01, 2012 12:47 am Post subject: |
|
|
chevymad wrote: | Should run with an SES light on.. if you just unplug it. Otherwise there's some other issue, or it has caused another problem. |
I replaced the connector on mine a few years back and mis-clocked it (I have that same EGR on my V6). The car ran fine, just threw the EGR code because the pintles didn't open as commanded by the ECM. Luckily, the way I had it connected didn't hurt the EGR itself. _________________ 92 Camaro
89 Camaro
|
|
Back to top |
|
|
sheltonw3 Member
Joined: 08 Dec 2008 Posts: 49 Location: Now Residing in Hellfire and Brimstone
1991 Pontiac Trans Am
|
Posted: Sun Jan 01, 2012 2:51 am Post subject: |
|
|
Like I said the SES light is not coming on at all!... the car cranks ,but no turn over, I am starting to wonder if the ECM just took a dump instead?...won't know til tomorrow and Might try disconecting the battery and waiting a mintue and see if there is any change there. _________________ Its not a question of how fast can it go?...its a question of how fast do you wish it to go? |
|
Back to top |
|
|
91RSVert Member
Joined: 16 May 2007 Posts: 2736 Location: AR
1991 Chevrolet Camaro RS
|
Posted: Sun Jan 01, 2012 9:01 am Post subject: |
|
|
I ran my 3.1 with NO EGR at all, wasnt even bolted in.
Something else is wrong. fuel pump, coils, something. But egr will not keep it from running unless its cracked so bad its creating a vac leak of bibilical perportions.(lots of spell check in that line) |
|
Back to top |
|
|
Al Hasse Member
Joined: 19 Nov 2005 Posts: 4379 Location: Bremerton, WA
1992 Chevrolet Camaro RS
|
Posted: Sun Jan 01, 2012 9:06 am Post subject: |
|
|
Just a thought. Try removing the O2 sensor and see if you can get it to run. I had a plugged up cat once, and instead of killing the motor, the pressure blew the EGR riser right off the manifold. Never did throw a code. Removing the O2 sensor should give exhaust somewhere to go if the cat got plugged. Replacing a cat doesn't cost as much as that EGR. |
|
Back to top |
|
|
aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
|
Posted: Sun Jan 01, 2012 9:49 am Post subject: |
|
|
C'mon you guys, the ECM isn't triggering the fuel pump relay or the CEL. That means it's fried or it's not getting power. He can unplug and test sh*t till he's blue in the face and it won't help anything. |
|
Back to top |
|
|
chevymad Master B
Joined: 11 Jan 2004 Posts: 5474
1987 Pontiac Formula
|
Posted: Sun Jan 01, 2012 12:23 pm Post subject: |
|
|
I was just trying to demonstrate to him that its not the EGR valve lol. When someone gets something in their mind, sometimes they wont listen til they see it cant be for themselves. |
|
Back to top |
|
|
aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
|
Posted: Sun Jan 01, 2012 12:26 pm Post subject: |
|
|
I got ya, B. My comment was more directed at the vacuum leak and O2 suggestions. Not that those are wrong but he's got bigger issues. |
|
Back to top |
|
|
BluFbdy Member
Joined: 16 Jul 2010 Posts: 915 Location: Port Orchard WA
1989 Chevrolet Camaro RS
|
Posted: Mon Jan 02, 2012 9:30 am Post subject: |
|
|
Is it possible the bulb is burnt out? I'd check that before hunting down a new ecm lol _________________ If you expect a kick to the balls and get a slap to the face its still a victory
|
|
Back to top |
|
|
Twilightoptics Hardcore (12sec Club)
Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
|
Posted: Mon Jan 02, 2012 11:12 am Post subject: |
|
|
BluFbdy wrote: | Is it possible the bulb is burnt out? I'd check that before hunting down a new ecm lol |
Definitely need to check these thing. Easy enough too. Check light should come on when you first turn the key on. If it doesn't, it's burnt out or there is an issue with the ECM be it it's dead or missing power/ground. If you hook up JUST the ecm to power/ground/SES light the ses light will come on indicating the ecm is functioning. _________________ A redline a day keeps the carbon away! |
|
Back to top |
|
|
BluFbdy Member
Joined: 16 Jul 2010 Posts: 915 Location: Port Orchard WA
1989 Chevrolet Camaro RS
|
Posted: Mon Jan 02, 2012 2:34 pm Post subject: |
|
|
Whoaaaa how does that make me stupid? Regardless of function a bulb is still a bulb lol I'm personally a fan of going from easiest to hardest when it comes to fixing something or you can just throw parts at it lol _________________ If you expect a kick to the balls and get a slap to the face its still a victory
|
|
Back to top |
|
|
Al Hasse Member
Joined: 19 Nov 2005 Posts: 4379 Location: Bremerton, WA
1992 Chevrolet Camaro RS
|
Posted: Mon Jan 02, 2012 3:03 pm Post subject: |
|
|
BluFbdy wrote: | Whoaaaa how does that make me stupid? |
That smiley just says he agrees with you |
|
Back to top |
|
|
BluFbdy Member
Joined: 16 Jul 2010 Posts: 915 Location: Port Orchard WA
1989 Chevrolet Camaro RS
|
Posted: Mon Jan 02, 2012 3:16 pm Post subject: |
|
|
Al Hasse wrote: | BluFbdy wrote: | Whoaaaa how does that make me stupid? |
That smiley just says he agrees with you |
Its very deceiving lol _________________ If you expect a kick to the balls and get a slap to the face its still a victory
|
|
Back to top |
|
|
chevymad Master B
Joined: 11 Jan 2004 Posts: 5474
1987 Pontiac Formula
|
Posted: Mon Jan 02, 2012 3:21 pm Post subject: |
|
|
One more thing with that simple idea. I'm not sure how you checked fuses, but if you just looked at them then please check them again with a test light or meter. Many times a fuse will not appear to be burnt but is. A test light is an easy way to check.. just touch both the small metal patches on the back of the fuse.. if the light lights on both.. all is good. |
|
Back to top |
|
|
|