1990 speedometer display
Thread Starter
Intermediate
Joined: Aug 2012
Posts: 37
Likes: 0
From: Jersey Shore Pa
1990 speedometer display
Need some help please. Installed Racetronix fuel pump and wire harness. Prior to install the digital speedometer worked fine. Since the install it's unreadable. Fuel tank shows full, numbers are jumbled up and can't read mileage. I find it hard to believe the cluster just failed after I changed the pump. Is there any way I can troubleshoot this? Also, Racetronix was kind enough to send me a clamp for the extra black wire on the harness but I can't figure out where to attach the clamp. They also sent me a 2 wire harness.
Team Owner
Joined: Sep 2003
Posts: 25,366
Likes: 2,733
Need some help please. Installed Racetronix fuel pump and wire harness. Prior to install the digital speedometer worked fine. Since the install it's unreadable. Fuel tank shows full, numbers are jumbled up and can't read mileage. I find it hard to believe the cluster just failed after I changed the pump. Is there any way I can troubleshoot this? Also, Racetronix was kind enough to send me a clamp for the extra black wire on the harness but I can't figure out where to attach the clamp. They also sent me a 2 wire harness.
Thread Starter
Intermediate
Joined: Aug 2012
Posts: 37
Likes: 0
From: Jersey Shore Pa
Racetronix doesn't provide instructions. Followed instructions from this forum
Walbro 190L/Hr Pump
Filter sock - 30 micron filtering (factory=70 micron)
Walbro to GM direct power wiring (no adapters)
Terminal lock
High pressure fuel line
Stainless gear clamps
Rubber pump mount
Pump sound insulation sleeve
C4 fuel tank gasket
Stainless hex-head tank bolts, washers and o-ring seals ( 9 pieces)
Hex key
Silicone grease
Walbro 190L/Hr Pump
Filter sock - 30 micron filtering (factory=70 micron)
Walbro to GM direct power wiring (no adapters)
Terminal lock
High pressure fuel line
Stainless gear clamps
Rubber pump mount
Pump sound insulation sleeve
C4 fuel tank gasket
Stainless hex-head tank bolts, washers and o-ring seals ( 9 pieces)
Hex key
Silicone grease
Team Owner
Joined: Sep 2003
Posts: 25,366
Likes: 2,733
Racetronix doesn't provide instructions. Followed instructions from this forum
Walbro 190L/Hr Pump
Filter sock - 30 micron filtering (factory=70 micron)
Walbro to GM direct power wiring (no adapters)
Terminal lock
High pressure fuel line
Stainless gear clamps
Rubber pump mount
Pump sound insulation sleeve
C4 fuel tank gasket
Stainless hex-head tank bolts, washers and o-ring seals ( 9 pieces)
Hex key
Silicone grease
Walbro 190L/Hr Pump
Filter sock - 30 micron filtering (factory=70 micron)
Walbro to GM direct power wiring (no adapters)
Terminal lock
High pressure fuel line
Stainless gear clamps
Rubber pump mount
Pump sound insulation sleeve
C4 fuel tank gasket
Stainless hex-head tank bolts, washers and o-ring seals ( 9 pieces)
Hex key
Silicone grease
It looks like a their after sale support is done from this forum: http://www.racetronix.com/supportforum.html
Where's the link to your instructions from the CF?
Last edited by WVZR-1; Aug 29, 2012 at 04:21 PM.
Thread Starter
Intermediate
Joined: Aug 2012
Posts: 37
Likes: 0
From: Jersey Shore Pa
Instructor
Joined: Jul 2008
Posts: 218
Likes: 0
From: Utah County Utah
I would try to narrow down if the display corruption only happens when the pump is running. Pull the fuse for the pump so it does not run, is the display still corrupted (even showing 0 mph?). My first thoughts are that 1. The pump is introducing EMF feedback into your electrical system, or 2. a loose ground for your dash panel.
