HELP! - C5 - won't start??
Thread Starter
Intermediate
Joined: Feb 2010
Posts: 31
Likes: 6
From: Conway AR
HELP! - C5 - won't start??
Tried to start after sitting for about 10 days. Turns over great.... just would NOT start. Tried it again today - it started...... backed it out of the garage to wash it. Now It won't start again? I checked the codes... the only ones showing are all "H" History codes, so I am assuming they have nothing to do with this problem?
I sure hate to leave it sit in the driveway overnight!!
Cranked it enough now that I am charging the battery....
Appreciate any help.......
I sure hate to leave it sit in the driveway overnight!!
Cranked it enough now that I am charging the battery....
Appreciate any help.......
Tech Contributor
Joined: Jan 2007
Posts: 19,360
Likes: 1,127
From: Dyer, IN
Tried to start after sitting for about 10 days. Turns over great.... just would NOT start. Tried it again today - it started...... backed it out of the garage to wash it. Now It won't start again? I checked the codes... the only ones showing are all "H" History codes, so I am assuming they have nothing to do with this problem?
I sure hate to leave it sit in the driveway overnight!!
Cranked it enough now that I am charging the battery....
Appreciate any help.......
I sure hate to leave it sit in the driveway overnight!!
Cranked it enough now that I am charging the battery....
Appreciate any help.......
Thread Starter
Intermediate
Joined: Feb 2010
Posts: 31
Likes: 6
From: Conway AR
C5 Won't start
The codes found are as follows - all ending in "H":
A0 LDCM
B2252
B2282
B2284
U1064
A1 RDCM
B2283
B2285
U1064
BO RFA
U1096
U1064
U1016
I believe I got 'em all and I "hope" I wrote them down correctly.....
Appreciate your help.
By the way... after charging the battery for an hour - I got it started and back in the garage. Although I can't say charging the battery had anything to do with it starting. Just after attempting so many times, I wore the battery down!
A0 LDCM
B2252
B2282
B2284
U1064
A1 RDCM
B2283
B2285
U1064
BO RFA
U1096
U1064
U1016
I believe I got 'em all and I "hope" I wrote them down correctly.....
Appreciate your help.
By the way... after charging the battery for an hour - I got it started and back in the garage. Although I can't say charging the battery had anything to do with it starting. Just after attempting so many times, I wore the battery down!
Last edited by glp; Feb 27, 2010 at 10:02 PM. Reason: More info
Tech Contributor
Joined: Jan 2007
Posts: 19,360
Likes: 1,127
From: Dyer, IN
The codes found are as follows - all ending in "H":
A0 LDCM
B2252
B2282
B2284
U1064
A1 RDCM
B2283
B2285
U1064
BO RFA
U1096
U1064
U1016
I believe I got 'em all and I "hope" I wrote them down correctly.....
Appreciate your help.
By the way... after charging the battery for an hour - I got it started and back in the garage. Although I can't say charging the battery had anything to do with it starting. Just after attempting so many times, I wore the battery down!
A0 LDCM
B2252
B2282
B2284
U1064
A1 RDCM
B2283
B2285
U1064
BO RFA
U1096
U1064
U1016
I believe I got 'em all and I "hope" I wrote them down correctly.....
Appreciate your help.
By the way... after charging the battery for an hour - I got it started and back in the garage. Although I can't say charging the battery had anything to do with it starting. Just after attempting so many times, I wore the battery down!
http://forums.corvetteforum.com/c5-t...rt-issues.html
Thread Starter
Intermediate
Joined: Feb 2010
Posts: 31
Likes: 6
From: Conway AR
B2252 Key Cylinder Switch Fault
Key Cylinder Switch?? Hard for me to even guess what that means.....
What are you thinking?
Am I wrong in thinking that with the H behind the code
it is some previous problem that has since cleared?
Do you recommend I clear all the old codes and see what comes up new?
Key Cylinder Switch?? Hard for me to even guess what that means.....
What are you thinking?
Am I wrong in thinking that with the H behind the code
it is some previous problem that has since cleared?
Do you recommend I clear all the old codes and see what comes up new?
Thread Starter
Intermediate
Joined: Feb 2010
Posts: 31
Likes: 6
From: Conway AR
I HAVE had problems with the doors not unlocking on occasion. Usually when it won't open with the FOB, I rock the Unlock/lock button repeatedly to regain good contact......... for a period of time.
I would've bet alot on the reliability of this car up until yesterday....now I am a bit nervous to drive it into a situation that will find me stranded - turning over great, but never firing up!!
As for other history - back when I first got it (2001), I went thru the whole column lock thing - but I took it in for the recall and no problem since. Other than that, about a month ago I got in to start it, it kind of started - but almost like it had too much fuel, it died..... then wouldn't start for about 5 minutes.
Thats it...... by the way it's got 26k miles on it.
I would've bet alot on the reliability of this car up until yesterday....now I am a bit nervous to drive it into a situation that will find me stranded - turning over great, but never firing up!!
As for other history - back when I first got it (2001), I went thru the whole column lock thing - but I took it in for the recall and no problem since. Other than that, about a month ago I got in to start it, it kind of started - but almost like it had too much fuel, it died..... then wouldn't start for about 5 minutes.
Thats it...... by the way it's got 26k miles on it.
Thread Starter
Intermediate
Joined: Feb 2010
Posts: 31
Likes: 6
From: Conway AR
Crank and not fire...... kind of like now, only it started finally.
It was one of those like back when we were kids. Like waiting for a "flooding event" to pass, then give it another go..... and it fired up.
Checked the codes again and they are as posted above.
By the way.... it won't start agin this morning.
It was one of those like back when we were kids. Like waiting for a "flooding event" to pass, then give it another go..... and it fired up.
Checked the codes again and they are as posted above.
By the way.... it won't start agin this morning.
Last edited by glp; Feb 28, 2010 at 01:03 PM. Reason: More info
Drifting
Joined: Aug 2007
Posts: 1,969
Likes: 8
From: Champaign IL
I had almost the Same problems with my 2001 Z06. The Dealer couldn't even figure it out. But Bill Curlee saved the Day. I used this Fix it Thread and everything's been good for a Year! Rip out that Ignition Switch and Clean off those contacts. Took about 2 hours for the Repair. Not really that Hard Either!
http://forums.corvetteforum.com/c5-t...ch-repair.html
When you go to Crank it over, Does the DIC still say "Corvette by Chevrolet" or are your Gauges doing Weird things too.. This was the Clue that Bill Curlee knew it was the Ignition Switch.
http://forums.corvetteforum.com/c5-t...ch-repair.html
When you go to Crank it over, Does the DIC still say "Corvette by Chevrolet" or are your Gauges doing Weird things too.. This was the Clue that Bill Curlee knew it was the Ignition Switch.
Last edited by slvrzo6; Feb 28, 2010 at 01:29 PM.
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Tech Contributor
Joined: Jan 2007
Posts: 19,360
Likes: 1,127
From: Dyer, IN
Crank and not fire...... kind of like now, only it started finally.
It was one of those like back when we were kids. Like waiting for a "flooding event" to pass, then give it another go..... and it fired up.
Checked the codes again and they are as posted above.
By the way.... it won't start agin this morning.
It was one of those like back when we were kids. Like waiting for a "flooding event" to pass, then give it another go..... and it fired up.
Checked the codes again and they are as posted above.
By the way.... it won't start agin this morning.
Thread Starter
Intermediate
Joined: Feb 2010
Posts: 31
Likes: 6
From: Conway AR
Sounds like fuel or spark to me too!
The guages and Display all work as they should each time, so I am guessing it isn't the ignition switch.
Should I hear the fuel pump kick on when I turn the ignition switch on?
After all the jazz the guages go thru, along with the other start sounds, I may not hear it, but if I should, perhaps I should listen closer.
I was leaning toward fuel pump, but after I got it started yesterday, it ran just fine for a few mile test drive.
Sadly without further investigative tools (pressure gauge), it sounds like try to get it started on a work day and off to the dealership it goes.
The guages and Display all work as they should each time, so I am guessing it isn't the ignition switch.
Should I hear the fuel pump kick on when I turn the ignition switch on?
After all the jazz the guages go thru, along with the other start sounds, I may not hear it, but if I should, perhaps I should listen closer.
I was leaning toward fuel pump, but after I got it started yesterday, it ran just fine for a few mile test drive.
Sadly without further investigative tools (pressure gauge), it sounds like try to get it started on a work day and off to the dealership it goes.
Intermediate
Joined: Oct 2009
Posts: 39
Likes: 5
From: Suffolk County, Long Island New York
Sound like I'm having the same problem you are. All my electrical indications appear normal. Please keep me informed. I'm going to look at the Crankshaft Position Sensor.
Thread Starter
Intermediate
Joined: Feb 2010
Posts: 31
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From: Conway AR
HELP! C5 won't start!
I think I finally figured it out.........
I had the hood raised to charge the battery,
Turned the key with my head out toward the engine compartment....
If I heard nothing before engaging the Start - it wouldn't start.
Once every 20 key turns I'd hear a brief hum, buzz, whatever..... after I turned the key ON, but not yet engaging the starter.
THEN it would start.
The problem - intermittent fuel pump!!
As I understand it, the fuel pump should energize/pressurize EVERY time you turn the key to ON. If you don't hear that 3-4 second buzz - it isn't.
I had the hood raised to charge the battery,
Turned the key with my head out toward the engine compartment....
If I heard nothing before engaging the Start - it wouldn't start.
Once every 20 key turns I'd hear a brief hum, buzz, whatever..... after I turned the key ON, but not yet engaging the starter.
THEN it would start.
The problem - intermittent fuel pump!!
As I understand it, the fuel pump should energize/pressurize EVERY time you turn the key to ON. If you don't hear that 3-4 second buzz - it isn't.
Thread Starter
Intermediate
Joined: Feb 2010
Posts: 31
Likes: 6
From: Conway AR
I DO want to say though that, as far as I'm concerned a Fuel Pump either works or it doesn't!!
So I am pretty darn sure it is the Fuel Pump RELAY (#35 in the fuse box under the hood) causing it to be intermittent.
I had to turn the key to ON about 75 times before I heard the fuel pump pressurize..... then it fired right up.
I drove it about 4 miles to a known good respecedt mech. He wouldn't even let me leave it outside - which made me feel better. But when I shut the car off - just for giggles I turned it on 3 more times and the fuel pump pressurized each time.
So I guess the end of this thread is Fuel pump relay for me! Thanks a bunch to all who pitched in, I know more about my 'vette now and that is always a good thing - even if it costs a bit!
So I am pretty darn sure it is the Fuel Pump RELAY (#35 in the fuse box under the hood) causing it to be intermittent.
I had to turn the key to ON about 75 times before I heard the fuel pump pressurize..... then it fired right up.
I drove it about 4 miles to a known good respecedt mech. He wouldn't even let me leave it outside - which made me feel better. But when I shut the car off - just for giggles I turned it on 3 more times and the fuel pump pressurized each time.
So I guess the end of this thread is Fuel pump relay for me! Thanks a bunch to all who pitched in, I know more about my 'vette now and that is always a good thing - even if it costs a bit!
