Sponsored Content
P
Lifetime Member
Send PMApache Junction, AZ - USA
Joined: 10/15/2006
Posts: 285
Vette(s): 1982,150K,Renegade CFI,Hooker Side Pipes,85 fuel pump,Bilsteins,HD suspension, Aluminum radiator, SharkBar/w 5-Point Restraints. 3:73 gears coming soon.
hello C3VR!
I have a problem... Battery went dead from what I thought was my interior lights staying on but also found that my fuel pump is also running continously even when the key is out; this is draining my battery. When I move the headlight switch dimmer, the interior lights go out but come back on, this switch is 3 months old. Right now I am pulling out the old switch and installing the old one - the problem with it was the dimmer was worn out. Maybe this will be the problem or part of the problem. Seems I have a few going on here at the same time.
I just installed an 85 pump 2 weeks ago, rebuilt and balanced the TB's and replaced the dist. cap - nothing else don't since and no problem since.
We had some good rain in Phoenix just before this started but I've been in the rain before with this vette - It is a daily driver.
Any thoughts from ya'all would help!
Thanks!
Phill
Phill's Vette 2007-02-07 23:15:20
I have a problem... Battery went dead from what I thought was my interior lights staying on but also found that my fuel pump is also running continously even when the key is out; this is draining my battery. When I move the headlight switch dimmer, the interior lights go out but come back on, this switch is 3 months old. Right now I am pulling out the old switch and installing the old one - the problem with it was the dimmer was worn out. Maybe this will be the problem or part of the problem. Seems I have a few going on here at the same time.
I just installed an 85 pump 2 weeks ago, rebuilt and balanced the TB's and replaced the dist. cap - nothing else don't since and no problem since.
We had some good rain in Phoenix just before this started but I've been in the rain before with this vette - It is a daily driver.
Any thoughts from ya'all would help!
Thanks!
Phill
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
SPONSOR AD:: (Our Sponsors help support Vette Registry)
Lifetime Member
Moderator
Send PMModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22720
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
The fuel pump relay may be stuck on. Try tapping on it with a screwdriver, to see if it turns off. If not, you may need to replace it. The fuel pump should only run for a couple of seconds when you turn the key on, unless the engine is running. I'd bet on the relay being stuck. 
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Joel,
For us lazy dummies, where is the relay located?
And how big of a hammer should be used for the tap?
Save the Wave!
Support the National Corvette Museum
Support the National Corvette Museum
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
x
If you know where the battery is , it's by the ECM ( electric control module ). You may have to move the battery a bit to get to it. If you tap it and the pump stops running, replace the relay.
Denny
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Free Member
Send PMCramerton, NC - USA
Joined: 8/22/2006
Posts: 1094
Vette(s): black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion
dwright, glad you asked that question. I had no idea where it was either......Ain't this forum great, what one don't know, someone else has the answer right off.
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
P
Lifetime Member
Send PMApache Junction, AZ - USA
Joined: 10/15/2006
Posts: 285
Vette(s): 1982,150K,Renegade CFI,Hooker Side Pipes,85 fuel pump,Bilsteins,HD suspension, Aluminum radiator, SharkBar/w 5-Point Restraints. 3:73 gears coming soon.
Thanks! Found the relay in my assem. manual. Cannot reach it though and will have to remove the battery and ECM to get to it. I will try tapping on it before I do all this and see if it shuts off. It is probably 25 years old so will replace it regardless.
If the replacement doesn't fix the problem, would I then be looking at an ECM issue??
Oh yeah, the interior lights staying on was a problem with the headlight switch which I fixed. Funny how two things happen at once and seem to be related on these vettes!
Thanks!
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Lifetime Member
Moderator
Send PMModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22720
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Not likely. Once the ign. is turned off, the ECM should power down. The only other possibility would be a short in the relay wiring...considering the location...that might be a reality.
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
P
Lifetime Member
Send PMApache Junction, AZ - USA
Joined: 10/15/2006
Posts: 285
Vette(s): 1982,150K,Renegade CFI,Hooker Side Pipes,85 fuel pump,Bilsteins,HD suspension, Aluminum radiator, SharkBar/w 5-Point Restraints. 3:73 gears coming soon.
Gave the relay a good wack and sure enough - it now shuts off. Sooo glad its not a wiring issue
Got a new replacement anyway - $29 @ Napa.
Anything I need to know before I remove the battery & ECM to replace the relay?
Thanks Joel & Denny!
Phill's Vette 2007-02-07 23:14:58
Got a new replacement anyway - $29 @ Napa.
Anything I need to know before I remove the battery & ECM to replace the relay?
Thanks Joel & Denny!
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
[QUOTE=Phill's Vette] Gave the relay a good wack and sure enough - it now shuts off. Sooo glad its not a wiring issue
Got a new replacement anyway - $29 @ Napa.
Anything I need to know before I remove the battery & ECM to replace the relay?
Thanks Joel & Denny!
[/QUOTE]
Got a new replacement anyway - $29 @ Napa.
Anything I need to know before I remove the battery & ECM to replace the relay?
Thanks Joel & Denny!
[/QUOTE]
I'm having the same kind of problem with mine with some twists.... But this thread has helped a bunch... I would love to meet the engineer that put that relay behind that plate though
Phill's Vette, did your melt the positive junction block in the battery box?
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
P
Lifetime Member
Send PMApache Junction, AZ - USA
Joined: 10/15/2006
Posts: 285
Vette(s): 1982,150K,Renegade CFI,Hooker Side Pipes,85 fuel pump,Bilsteins,HD suspension, Aluminum radiator, SharkBar/w 5-Point Restraints. 3:73 gears coming soon.
YES! It did
As for the engineer that placed it there - must have been the same guy that built the car AROUND the damm heater core! OMG what a PITA that was! - like a frame off kind of thing... just to get to it! Caused me major PTCSS - Post Tramatic Covrette Stress Syndrom Gotta love these cars though!
Phill
As for the engineer that placed it there - must have been the same guy that built the car AROUND the damm heater core! OMG what a PITA that was! - like a frame off kind of thing... just to get to it! Caused me major PTCSS - Post Tramatic Covrette Stress Syndrom Gotta love these cars though!Phill
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
in Forum: C3 Electrical, Body and Interior
Sponsored Content