Enthusiast
Fuel & volt Gauge reed high
on my new to me 93 the fuel and voltmeter reed high. The previous owner stated it was like this for some time. The alternator was changed when this happened due to showing high volts but did not fix the problem. I pulled the gauge cluster out and cleaned the contacts but this did not help either. Any other ideas on what would cause both gauges to reed high?
1993 6.5TD Auto, Extended Cab 4X4
3" down pipe, 2.5" crossover
New Injectors.
Newbie
What is the battery reading, digital meter, while the engine is running?
Instrumentation is not very accurate.
Enthusiast
fuel guage is especially carefree about accurate reporting. When I fill up, it says full + one-quarter. When it says 1/2 tank. it's about 26 or 27 gals into a 42 gal tank.
Always has, always will.
'97 'Burb K1500 6.5td 213k miles 3.42's Amsoil air filter & 15W40. All synthetic lubes. KD 3.5" exhaust. Clean cat. 16.5 - 17 MPG combined, 18+ hwy at 70. Love her, but never know what's next. Chevy should be paying us.
Enthusiast
Battery is reading 14.2 volts at an idle with the truck guage reading about 17 volts. The truck guage at start up goes to about 14 volts, hovers then jumps to about 16 or 17. This is independant of glow plugs.
The reason I thought boath guages might have a similar problem is they are side by side in the cluster.
1993 6.5TD Auto, Extended Cab 4X4
3" down pipe, 2.5" crossover
New Injectors.
Enthusiast
14.2 volts is perfect - the truck gauge is off.
1998 K2500 Suburban 6.5L TD 3.73 rear, Ron Schoolcraft 18:1, Kennedy ECM & IC, Timing gears, Splayed main caps, 3.5" Kennedy Exhuast/No Cat, K&N Filter, Boost/Tranny Temp/EGT(Pre Turbo), Ceramic-coated Manifolds, 195 Stat's, 265/75's (VSSB Adjusted) 7,000lbs (on a scale) Remote Mount Oil Filter, Remote Oil Pressure Sensor
The Todd
Mine is about the same.Originally Posted by sailun
I have thought about trying to calibrate it using a potentiometer and resister.
96 Suburban K2500 6.5L TD. High miles and daily driven (for now). Remote mount FSD with cooler, Turbo Master/Boost fooler, 4" Jardine turbo back exhaust, 2.5" cross-over pipe, Boost, EGT, & Tranny temp gauges, working on more.
Enthusiast
Good thought about calibrating with resistors or potentiometer. Will check grounds by tank first.
1993 6.5TD Auto, Extended Cab 4X4
3" down pipe, 2.5" crossover
New Injectors.
Newbie
guage readings
I was also unhappy with faulty readings. What worked for me was carefully lifting the needles off their pins and repositioning them. Its a good idea to have the dash panel level and stationary if you don't like doing this two-three times. Good luck, Fred
Missy Good Wench ( Moderator)
If this was an issue that just popped up then it sounds like the voltage regulator in the dash cluster has issues.
I would bet that if you swapped the cluster with a good one from another rig that this bug would go away.
GM gauges have never been known for being super accurate BUTTTTTTTT they are usually fairly good at least within a volt on the gauge.
If you can swap the unit out and try it I would do that before going to any length to modify the setup.
Just a thought
Robyn
(1) 1995 Suburban 2500 4x4
(1) 1997 Astro
(1) 2005 Suburban (Papa Smurf)
THIS IS BOW TIE COUNTRY
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