Join Date: Apr 2019
Adhwc is offline
ZR2 ABS Module + Gauge Cluster Questions/Issue
Ended up selling my 1985 S10 I purchased when I joined the forum and upgraded to a S10 ZR2. The truck isn't perfect, but I've repaired quite a bit and just have a few things I have questions about. Any and all help would be greatly appreciated!
Background info: 2003, S10 LS, ZR2 package, 112k miles, bone stock
ABS Module failure? - I have done some research and it seems that it is common to have failed solder points on the module's board. My ABS/BRAKE light will come on randomly sometimes (maybe a few times a day on/off, maybe off for a week, maybe on for 2-3 days straight, no pattern). I used a dealer level scanner at work and the codes (not active when I scanned, but in history) pointed towards a faulty ABS module. I am really wanting to try to fix this myself as I have a basic understanding of soldering and from a few instances I've seen seems fairly simple to diagnose (if that is the problem).
Question: How would I go about taking apart the module to get to the board without damaging anything, and what is the best way to "seal" it back together? ALSO, in the off chance that I royally screw up, are you able to drive the vehicle WITHOUT the module plugged in or even installed on the ABS pump? (Assuming I would need to drive it after ruining mine, and having another replacement on a delay for a few days). I know it doesn't really matter much with it being plugged in and failed (just no ABS and the dash light, obviously), but can I totally remove it in an attempt to fix the board myself?
Specific Gauge issues - In specific, my fuel gauge, but also the speedometer and voltage gauge to a much lesser degree.
*Fuel gauge - randomly will be erratic and wiggle between a few ticks, or jump as much as 1/4 of a tank. Doesn't matter if its full, half tank, or 1/4. Usually happens more often once I hit about 3/4-1/2 and below, but has happened when full as well. Sometimes it will stay perfect, other days it jumps around, then quits, jumps, quits, stays still, etc.
*Speedo - When slowing to a stop, the speedo seems to kind of "hang up" at 10MPH, then jump down to 0 (skipping 9-1), then once I start moving do the same in the opposite direction. Works perfect otherwise, only notice it when completely stopping and starting slow from a stop. Appears to be accurate in measurement.
*Voltage - When vehicle is running, voltage shows a tick under 14. When turning on the blinker(s) gauge will move 2-3 ticks in correspondence with blinker. Doesn't seem to experience the same behavior with any other load (A/C, radio, lights, etc, ONLY blinkers)
Question: Could this be as simple as bad stepper motors? Would it be worth it to order the kit and replace all of them? Is there other issues with each that could be causing the same issues if they all appear to be reading correctly other than the erratic behavior?
TIA for reading and any help you can provide!