Can my car stall from ignition switch problems??
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
Can my car stall from ignition switch problems??
Question in the title. Car has been progressively been getting worse with random cut outs. Symptoms that im aware of currently. Hard starts, car cuts out while driving i get a quick CEL, both rpm and speedometer needles jump a hair, the oil pressure guage drops to 0, and when the car comes back to life it idles high. 1600-1800rpm. This all simultaneously happens and it happens in a sec or 2 tops. Car comes back to life as if nothing is wrong. The ONLY code i recieved bfore was a P0514?? I think?? Even then its only showed twice. Not at all today. NO CODES. Not even when it happens on the spot. Where to start?
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
Thank you for the links. Ive seen bills ignition switch thread b4. I was just skimming through most of it as i didnt have a problem then. Ok, i will have to tackle that another weekend. Im still finishing up the AC repair this weekend. Getting it vacuumed as we speak. I will try my other key and see how that fairs.
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
Ok wow, my victory dance was very short lived after seeing the fruits of my hard labor of changing my AC components. All is well there! Very cold AC
. However, while letting the car idle for a couple minutes, it just died. It then spit out a whole mess of codes to which it has never done. All "H".
28-TCS
U1016
40 BCM
U1096
1016
58 SDM
U1016
1040
1096
1064
60 IPC
U1064
1040
1176
1088
1160
80 Radio
U1064
1016
1096
HVAC
U1064
1096
1160
BO-RFA
U1000
1255
1064
1096
1016
Now im really lost and confused
It did this twice and upon the second time I had a dead start. No fire. looked at codes again and saw no comm for the PCM. Then the dash ding goes off and im able to start the car. gremlins have finally attacked me
. It seems as if battery voltage is low. I know our cars don't like low voltage. Will have to check voltage across the battery.
. However, while letting the car idle for a couple minutes, it just died. It then spit out a whole mess of codes to which it has never done. All "H".28-TCS
U1016
40 BCM
U1096
1016
58 SDM
U1016
1040
1096
1064
60 IPC
U1064
1040
1176
1088
1160
80 Radio
U1064
1016
1096
HVAC
U1064
1096
1160
BO-RFA
U1000
1255
1064
1096
1016
Now im really lost and confused
It did this twice and upon the second time I had a dead start. No fire. looked at codes again and saw no comm for the PCM. Then the dash ding goes off and im able to start the car. gremlins have finally attacked me. It seems as if battery voltage is low. I know our cars don't like low voltage. Will have to check voltage across the battery.
Last edited by ZZ06; Aug 23, 2015 at 03:02 PM.
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
Also out of curiosity, what are your guys voltage in the heat with AC ON and OFF? Mine today was low with it on, and not exactly stellar with it off. AC ON was 13.2. It would drop to 13.0 at a stop with a blinker on.
. With AC OFF, it was 13.4, 13.5.
. With AC OFF, it was 13.4, 13.5.
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
No the carpet isn't wet. I just got back from having the battery tested. I checked with a multimeter just for good measure before its test anyway to see. It read 12.86 across the board. Test came back good as well. Yes I need to have a look at the BCM. While I was at the autohobby shop on base this morning I started to have a look at the BCM bu didn't feel like taking too much apart. Guess I got to now that im home.
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
I pulled it up and out tonight. I didn't have the time to take a multimeter to it but I pulled connections to look for possible corrosion. Clean as a whistle. Star connectors were clean too. (sigh)
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Melting Slicks
Joined: Sep 2011
Posts: 2,258
Likes: 544
From: Appleton WI
Any chance you have a Window Valet installed? I was getting the u1016 codes and my Window Valet stopped working normally. I've pulled it and haven't had the codes in a couple of weeks. Not sure if the Window Valet or the PCM is acting up or maybe they somehow got out of sync.
Last edited by 3sACROWD; Aug 24, 2015 at 09:46 AM.
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
Any chance you have a Window Valet installed? I was getting the u1016 codes and my Window Valet stopped working normally. I've pulled it and haven't had the codes in a couple of weeks. Not sure if the Window Valet or the PCM is acting up or maybe they somehow got out of sync.
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
Are you certain the problem is the ignition switch and not the ignition key cylinder?? Two very different components although the key cylinder is used to turn the ignition switch.
Loose key in the cylinder can result in several electrical symptoms. If you have a backup key try that. If not then I suggest you go to the local dealer and have a new one cut for your VIN.
Here are 3 links related to the ignition switch:
diagnosis
http://forums.corvetteforum.com/1568186703-post64.html
removal
http://forums.corvetteforum.com/1571067145-post107.html
repair procedure
http://forums.corvetteforum.com/c5-t...ch-repair.html
Repair or replace the ignition switch
I suggest that you go through the diagnosis step before repairing or replacing the ignition switch.
Loose key in the cylinder can result in several electrical symptoms. If you have a backup key try that. If not then I suggest you go to the local dealer and have a new one cut for your VIN.
Here are 3 links related to the ignition switch:
diagnosis
http://forums.corvetteforum.com/1568186703-post64.html
removal
http://forums.corvetteforum.com/1571067145-post107.html
repair procedure
http://forums.corvetteforum.com/c5-t...ch-repair.html
Repair or replace the ignition switch
I suggest that you go through the diagnosis step before repairing or replacing the ignition switch.
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
The contacts on the switch itself don't look crazy bad, but could use cleaning nonetheless. However, the prongs look awful!
. Infact, after going to look back at Bill's pictures and comparing them to mine, mine look a little worse!
Last edited by ZZ06; Aug 25, 2015 at 06:19 PM.
Melting Slicks
Joined: Apr 2009
Posts: 2,479
Likes: 36
Do not rule out a failing crank position sensor. Believe me, I know a thing or two about how an intermittently failing CKP sensor can make diagnosis very difficult. I went through the same thing and began throwing new parts at my car such as new ignition switch and MAF. I also went through all the tests imaginable and could not get my car to stop stalling, actually turning itself off during normal highway cruising. Finally changed my CKP sensor and all has been fine for two years now.
I think your "U" codes are not the cause of your stalls but the result of the car shutting off unexpectedly. Based on my experience, there are really only two components that can cause the car to unexpectedly and intermittently shut off without useable codes. A bad or failing ignition switch or a failing CKP sensor.
Hope this helps.
I think your "U" codes are not the cause of your stalls but the result of the car shutting off unexpectedly. Based on my experience, there are really only two components that can cause the car to unexpectedly and intermittently shut off without useable codes. A bad or failing ignition switch or a failing CKP sensor.
Hope this helps.
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
Do not rule out a failing crank position sensor. Believe me, I know a thing or two about how an intermittently failing CKP sensor can make diagnosis very difficult. I went through the same thing and began throwing new parts at my car such as new ignition switch and MAF. I also went through all the tests imaginable and could not get my car to stop stalling, actually turning itself off during normal highway cruising. Finally changed my CKP sensor and all has been fine for two years now.
I think your "U" codes are not the cause of your stalls but the result of the car shutting off unexpectedly. Based on my experience, there are really only two components that can cause the car to unexpectedly and intermittently shut off without useable codes. A bad or failing ignition switch or a failing CKP sensor.
Hope this helps.
I think your "U" codes are not the cause of your stalls but the result of the car shutting off unexpectedly. Based on my experience, there are really only two components that can cause the car to unexpectedly and intermittently shut off without useable codes. A bad or failing ignition switch or a failing CKP sensor.
Hope this helps.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
Do not rule out a failing crank position sensor. Believe me, I know a thing or two about how an intermittently failing CKP sensor can make diagnosis very difficult. I went through the same thing and began throwing new parts at my car such as new ignition switch and MAF. I also went through all the tests imaginable and could not get my car to stop stalling, actually turning itself off during normal highway cruising. Finally changed my CKP sensor and all has been fine for two years now.
I think your "U" codes are not the cause of your stalls but the result of the car shutting off unexpectedly. Based on my experience, there are really only two components that can cause the car to unexpectedly and intermittently shut off without useable codes. A bad or failing ignition switch or a failing CKP sensor.
Hope this helps.
I think your "U" codes are not the cause of your stalls but the result of the car shutting off unexpectedly. Based on my experience, there are really only two components that can cause the car to unexpectedly and intermittently shut off without useable codes. A bad or failing ignition switch or a failing CKP sensor.
Hope this helps.
Bill
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
Thanks Bill. Yes i am not ruling this out at all. This weekend im going to get a fp guage just to tickle my fancy and see what the psi at the rail is. Unfortuately, pulling the header at this moment isnt favorable simply bc it has a hairline crack. Seems silly to pull it and not be able to get it fixed at the same time i put a new CKPS in place. I will continue to update you all on my findings.
Thread Starter
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
Ok got to work this morning in the garage. Im killing 2 birds with one stone here. The header is going to LG this week for either repair of replacement. Will install a new crank sensor when I order one next week.
