no start!
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Joined: Dec 2009
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From: Oradell New Jersey
no start!
yes i used the search button!
99 A4, CLB done
every so often the vette wont start. at first i thought it was the GM 'fix' for the colum lock so i did the CLB.
now once again the car is dead, i checked the DIC for codes, none were current so i cleared the history (there were like 7 in the history for the BCM) and stupid me didnt write them down!
it does the whole ignition on cycle on the dash, fuel pump primes, battery was 12.7 volts and is new. i pulled fuse 23? and 25 and let the car sit for about half an hour, nada. i pulled the battery and charged it up anyway, still nada. i can gaurantee the car will start later on tonite tho... the BCM clicks away and the security light comes on when the key is removed... will not crank!
where do i look next?
99 A4, CLB done
every so often the vette wont start. at first i thought it was the GM 'fix' for the colum lock so i did the CLB.
now once again the car is dead, i checked the DIC for codes, none were current so i cleared the history (there were like 7 in the history for the BCM) and stupid me didnt write them down!
it does the whole ignition on cycle on the dash, fuel pump primes, battery was 12.7 volts and is new. i pulled fuse 23? and 25 and let the car sit for about half an hour, nada. i pulled the battery and charged it up anyway, still nada. i can gaurantee the car will start later on tonite tho... the BCM clicks away and the security light comes on when the key is removed... will not crank!
where do i look next?
Last edited by maroman88; Mar 8, 2010 at 05:58 PM.
Tech Contributor
Joined: Jan 2007
Posts: 19,493
Likes: 1,178
From: Dyer, IN
yes i used the search button!
99 A4, CLB done
every so often the vette wont start. at first i thought it was the GM 'fix' for the colum lock so i did the CLB.
now once again the car is dead, i checked the DIC for codes, none were current so i cleared the history (there were like 7 in the history for the BCM) and stupid me didnt write them down!
it does the whole ignition on cycle on the dash, fuel pump primes, battery was 12.7 volts and is new. i pulled fuse 23? and 25 and let the car sit for about half an hour, nada. i pulled the battery and charged it up anyway, still nada. i can gaurantee the car will start later on tonite tho... the BCM clicks away and the security light comes on when the key is removed... will not crank!
where do i look next?
99 A4, CLB done
every so often the vette wont start. at first i thought it was the GM 'fix' for the colum lock so i did the CLB.
now once again the car is dead, i checked the DIC for codes, none were current so i cleared the history (there were like 7 in the history for the BCM) and stupid me didnt write them down!
it does the whole ignition on cycle on the dash, fuel pump primes, battery was 12.7 volts and is new. i pulled fuse 23? and 25 and let the car sit for about half an hour, nada. i pulled the battery and charged it up anyway, still nada. i can gaurantee the car will start later on tonite tho... the BCM clicks away and the security light comes on when the key is removed... will not crank!
where do i look next?
Many possibilities.....codes always help....history or current. Security light comes on? The real question is: does the security light go out when the key is turned? Also, you say the BCM is "clicking"...are you referring to the TDR? If so, that is independent from the BCM.
As usual, this needs to be troubleshot in the no start condition....especially in the absence of codes. You can do some inspection of the solenoid wiring, battery cables, etc.
Do you have a DMM and can you read a schematic?
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Joined: Dec 2009
Posts: 647
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From: Oradell New Jersey
Many possibilities.....codes always help....history or current. Security light comes on? The real question is: does the security light go out when the key is turned? Also, you say the BCM is "clicking"...are you referring to the TDR? If so, that is independent from the BCM.
As usual, this needs to be troubleshot in the no start condition....especially in the absence of codes. You can do some inspection of the solenoid wiring, battery cables, etc.
Do you have a DMM and can you read a schematic?
As usual, this needs to be troubleshot in the no start condition....especially in the absence of codes. You can do some inspection of the solenoid wiring, battery cables, etc.
Do you have a DMM and can you read a schematic?
sorry i thought that was the BCM next to the fuse box on the PS floor... the silver box down there clicks. security light does go out once car is running. battery cables checked out good. DMM?? ive rewired my 88 Camaro a number of times with diagrams and wat not... im a big DIY'er, someone else touching my cars is a last resort
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Joined: Dec 2009
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From: Oradell New Jersey
i cleaned the 2 chassis grounds under the hood... pretty gross!
after a night of hard driving last night i pulled these codes, however the no start did not occur last night
P1431 - fuel sensor... it played dead last night, im running the techron stuff thru this tank as we speak!
C1225 - EBCM Internal Malfunction
U1096 - Loss of Communication with IPC
U1061 - ??????
U1016 - Loss of Communication with PCM
all were history codes
after a night of hard driving last night i pulled these codes, however the no start did not occur last night
P1431 - fuel sensor... it played dead last night, im running the techron stuff thru this tank as we speak!
C1225 - EBCM Internal Malfunction
U1096 - Loss of Communication with IPC
U1061 - ??????
U1016 - Loss of Communication with PCM
all were history codes
Tech Contributor
Joined: Jan 2007
Posts: 19,493
Likes: 1,178
From: Dyer, IN
Thread Starter
Pro
Joined: Dec 2009
Posts: 647
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From: Oradell New Jersey
annnnnnd it happened again,
no check engine light
pulled these codes again
U1096 - Loss of Communication with IPC
U1061 - Loss of Communication with Suspension Control System
U1016 - Loss of Communication with PCM
no check engine light
pulled these codes again
U1096 - Loss of Communication with IPC
U1061 - Loss of Communication with Suspension Control System
U1016 - Loss of Communication with PCM
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Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
Ok, leaning toward an ignition switch(which is common), but you should take the steps. Based on the schematic in this thread, what do you know when you have a no start condtion? i.e. is the TDR getting 12 volts at C2?
Advanced
Joined: Jul 2009
Posts: 82
Likes: 2
From: Valrico Fla
I had the same issue sometimes it started fine and other times it wouldn't start for hours & sometimes days. So I replaced the ignition switch after doing all the other checks battery, starter, etc and that fixed the problem. I took the switch apart and a couple of the contact points were burned so it was definitley the culprit.
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Joined: Dec 2009
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From: Oradell New Jersey
got it all figured out! thanks for everyones help!
it was happening more and more often... so i smacked the starter solenoid and it started, turned the car off and no restart, smacked it again and it started... climbed under the car, everything was tight. took it to my mechanic and told him to change the starter and now its perfect! normally id do it myself but he had a spot to get my car in before this awesome weather holiday weekend so i figured id be better off just having him do it!
it was happening more and more often... so i smacked the starter solenoid and it started, turned the car off and no restart, smacked it again and it started... climbed under the car, everything was tight. took it to my mechanic and told him to change the starter and now its perfect! normally id do it myself but he had a spot to get my car in before this awesome weather holiday weekend so i figured id be better off just having him do it!