Go Back   LS1TECH > CHASSIS, SUSPENSION, APPEARANCE > General Maintenance & Repairs
Sign in using an external account
Register Forgot Password?
Search

General Maintenance & Repairs
Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by
Gearstar Performance Transmissions

Reply
 
Thread Tools Search this Thread
Old 11-17-2011, 09:09 PM   #1
Staging Lane
Garage is empty, add now
 
athornt2's Avatar
 
Trader Rating: 17
Join Date: Jan 2008
Location: Atl, GA
Posts: 92
Default Car won't start. Gauge lights work but not the actual gauges...

I need help. I've got a race in less than two weeks and still need to get the car tuned. --98 Camaro Z28

Here are some fact to help describe what has been done to the car. The car is now gutted, no hvac, no air pump, no egr, and no evap. Has a 6 pt roll cage. Has longtube headers, psc powering steering pump w/ cooler, improved racing oil pan baffle, and revxtreme catch can system. I have also removed the door harness as my doors are gutted for the nascar bars.

I got the dash back in last night and hooked the gauge cluster up to find out that the lights work -- brake light comes on(deleted the parking brake), Airbag light comes on(deleted both airbags), and the check gauges light comes on. However, the gauges & odometer do not work. The voltage gauge shows zero but I know the battery is not bad as I put it in my trans am tonight and it started right up. When I turn the ignition to start the car nothing happens except for a small black box clicks and the headlights turn off (but only when the key is turn to start the car). This black box is not the BCM.... (some kind of relay..??) Throughout the tear down of my car I would attempt to start it to make sure that I didn't unplug anything important..... the last time I tried was after I removed the door harness... and the engine would turn over when I tried to start the car. I have checked all of the fuses, they're fine. I even swapped the gauge fuse with the one out of my Trans Am to make sure that wasn't the issue -- no luck. I've made sure that all of the grounds inside the car are good. The ground coming off the side of the block on the driver's side looks to be in good shape. The alternator has been reconnected properly. I've run out of ideas.... why would the gauges not work but the lights do? Any help would be greatly appreciated.

Allen
__________________
2001 Camaro Z28 M6 - Sold

1994 Trans Am M6 - Sold

1998 Camaro Z28
#11 American Iron
NASA-SE
athornt2 is offline   Reply With Quote
Old 11-18-2011, 07:12 AM   #2
Staging Lane
Garage is empty, add now
 
athornt2's Avatar
 
Trader Rating: 17
Join Date: Jan 2008
Location: Atl, GA
Posts: 92
Default

Any ideas? Anybody? What powers the gauges? I wonder if the pcm was damaged when the cage was getting welded in the car???

Another thing I just remembered... there is a connector above the rear end that is not plugged into anything... I can't remember if that went to the evap system or not. I don't think it plugs into the fuel pump though.... and I know its not the ABS connector that goes onto the top of the rear end.
__________________
2001 Camaro Z28 M6 - Sold

1994 Trans Am M6 - Sold

1998 Camaro Z28
#11 American Iron
NASA-SE

Last edited by athornt2; 11-18-2011 at 08:16 AM.. Reason: Added info
athornt2 is offline   Reply With Quote
Old 11-19-2011, 04:14 AM   #3
myk
TECH Fanatic
1999 Pontiac Trans Am
My Garage
 
myk's Avatar
 
Trader Rating: 4
Join Date: May 2007
Location: Sun Diego
Posts: 1,725
Default

The only wiring that I remember to be above the axle are the ABS and fuel pump harnesses.

When you're talking about the small black box that clicks when the headlights go off, are you refering to the DRL (daytime running light) module?
__________________

OMG! Myk's still driving an LS1!
myk is offline   Reply With Quote
Old 11-19-2011, 05:34 PM   #4
Staging Lane
Garage is empty, add now
 
athornt2's Avatar
 
Trader Rating: 17
Join Date: Jan 2008
Location: Atl, GA
Posts: 92
Default

You were right, that is the DRL module. Good call! The connector that is not plugged in goes to the EVAP -- found that on a schematic.

Here is where I stand --
1) Put the battery in my trans am and it fired right up.
2) check alternator connections -- fine
3) Re-did all grounds inside the car
4) Took the dash off and inspected wiring on the back of the fuse box.
5) Pulled every fuse and inspected them - including the two fuse boxes in the engine bay
6) Swapped the gauge fuse with the one in the Trans Am
7) Swapped the starter relay with a fan relay

Put multimeter on the battery... 11.7 volts with ignition on -- when grounding from both the battery and the chassis.
Checked for continuity @ the starter relay. The starter relay is not being grounded. I attached a wire to a chassis ground and then into the relay terminal to ground it and stuffed the relay on top. After that I was able to activate the starter, however the car won't actually start. -- Eliminated ignition switch issue.

The gauges still are not working. The fan relay next to the starter relay is grounded. What provides the ground for the starter circuit? I have a bad feeling that something inside the car is not plugged and has been thrown away when I was gutting the car. I did that on my LT1 car... although the gauges never quit working... but it wouldn't fire until I replugged a relay from the passenger side airbag back in.

The module that I thought was the VATS module that clicks is actually the daytime running lights module....
__________________
2001 Camaro Z28 M6 - Sold

1994 Trans Am M6 - Sold

1998 Camaro Z28
#11 American Iron
NASA-SE
athornt2 is offline   Reply With Quote
Old 10-07-2014, 01:46 AM   #5
Registered User
Garage is empty, add now
 
Trader Rating: 0
Join Date: Oct 2014
Posts: 1
Default ????

I'm going through the same issues and no one has a good direction to go to. Did you ever figure your issue out? I cannot tune the car do to the similar BS. OBD2 port will not power HPTuners, car will not power fuel pump, starter, or coils, and the cluster is going crazy also. Help would be appreciated
BConway9392 is offline   Reply With Quote
Old 11-23-2014, 01:18 PM   #6
Teching In
Garage is empty, add now
 
Trader Rating: 10
Join Date: Jul 2005
Posts: 48
Default Car Won't start. Only have certain dash lights and clicking coming from black box.

Here's the back story:

Car has been sitting for about 3 weeks. The battery has been on a trickle charger the entire time.

Started the car up this morning with no problem. Went to put it in reverse and it died (not sure if I stalled or if it died for another reason). All the lights on the dash are out with the exception of both blinker indicators and the high beam light. The security light will come on for about 3 seconds and then go off (I have a viper alarm system). The car will try to crank over (does not sound like it is struggling), but I do not hear the fuel pump priming. When I turn the key to the off position, the gauges will reset (going all the way right then back down).

The black box behind the radio will click about every 1 second when the key is in the on position. I have a picture of it below.

I checked all the fuses. None are blown. Battery terminals are clean.

Any suggestions?
Attached Thumbnails
Car won't start. Gauge lights work but not the actual gauges...-dsc_0075.jpg  
Hot Karl is offline   Reply With Quote
Old 11-23-2014, 06:33 PM   #7
Teching In
Garage is empty, add now
 
Trader Rating: 10
Join Date: Jul 2005
Posts: 48
Default

Update:

I believe that box is the daytime running light module. If i attempt to start the car with the ebrake up, it will not click. If I turn the headlights on, it will not click. Once I turn the lights off or drop the ebrake, it will click even if I pull the ebrake. I have to completely shut off the car to reset it.
Hot Karl is offline   Reply With Quote
Old 11-23-2014, 06:33 PM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Gauges and radio not working SAchris Stereo & Electronics 18 03-18-2014 09:46 AM
Dead gauges and electrical gremlins on 99 Camaro superbee_68 Stereo & Electronics 6 02-19-2014 07:08 PM
ground problems turn signal and tail light issuew ZeeTwentyFate Stereo & Electronics 0 09-21-2013 06:32 PM
gauge issues... no tach, fuel, or temp but others work GTA91 Stereo & Electronics 3 01-27-2012 08:41 AM
HELP!!! Fuse 7 blowing with keyless only door lock/unlock & engine off 2002 SS Camaro weeha Chevrolet Camaro 1967-2002 1 08-10-2011 08:00 PM


Tags
battery, car, check, clicking, fine, gages, gauges, light, lights, star, start, turn, whirring, wont, work, wrong


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



Join Ls1Tech

All times are GMT -5. The time now is 02:34 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - JOBS
Emails & Contact Details