Skip to main content

Electrical Gremlins Galore!

1/2/18
I had high hopes over the holiday break to get the car running.  Unfortunately it was just not meant to be.  My primary focus was to get everything electrically working on the car because we knew there were problems.  Replacing the engine harness was the first step but other issues had to be resolved as well.

During one of the attempts to steal the car, the ignition switch got damaged.  The vehicle would actually power up with the key out of the ignition which was not good.  I dropped the column in order to get access and replaced the switch.  Once replaced, the ignition started functioning as expected so I was able to move onto checking everything else.

The hardest problem to find is the one that is comes and goes for no apparent reason.  This was the case for the first issue I had to resolve.  As I was verifying each of the accessories worked, the power would randomly shut off.  I would wiggle connections, turn the ignition on and off, disconnect the battery, reconnect the battery, check fuses... nothing seemed to have an impact on the problem.  Magically, at some random time, everything would start to work again.  This went on and on for a couple hours until I finally figured it out.  Some how, one of the main body fuses got damaged.  It had a small crack through the fuse itself.  The fuse was not blown - it was broke.  Once replaced, the random power problem went away.  You can see the crack below in the B/W photo.

Next issue I needed to deal with was the instrument cluster.  When the ignition was turned on, the temp gauge would peg and multiple idiot lights would turn on.  After referencing the FSM, I traced the problem to a I/P (instrument panel) circuit which seems to touch almost everything attached to the cluster and the cluster itself.  After some research on the ImpalaSS forum, I read a post about the temp gauge being problematic in the 1994-1995 clusters.  Dan had purchased a Z28 cluster so I swapped it in.  This appeared to fix the cluster problems so time to move onto the headlights.



Dan had installed some T84 headlights.  They are supposed to be much better than stock and look pretty cool as well.  I found two bad bulbs, one broke bulb and a broken ground tab on the marker light.  I also diagnosed a stripped ground bolt on the drivers side core support.  The drivers side had at one point had most of the connectors replaced (likely due to an accident) and they used butt connectors.  I will at a later time replace those using soldered connections for the sake of reliability.



Turning out the garage light later that evening knowing the car was once again electrically working felt awesome.  This was the most difficult hurdle in my mind to resolve because it was "unknown".  Now I can move on to some of the easier tasks!!


Comments

  1. AWESOME! Those electrical bugs drove me crazy and without enough time to ever spend on it I was frustrated to the point I walked away. So glad you figured it out. Broken fuse. Geez.

    ReplyDelete

Post a Comment

Popular posts from this blog

Overhead Console Install

One of the "asks" was to install and wire in an overhead console.  I believe it was from an Astro Van and nothing about it fit the Impala.  I was quite surprised how long the install took but the finished product is really all that matters in the end. I first disassembled the console so I could paint it as well as figure out how to best install the darn thing. With the headliner out, I can form the base to conform to the Impala headliner.  I decided to use thin aluminum sheets and rivet them to the sides to fill the gaps. I then covered the base with material that matched the headliner. Painting everything the same matte black color as the rest of the car so it matches. Lastly the final assembly.  I as really happy with how it turned out thus far. I really hate cutting up a perfectly good headliner but this mod requires it.  Most people cut huge holes and also drill into the cross brace and use screws/hardware that can damage the roof if not careful.  I

Center Console

The center console needed to get modified so it would work with the new B&M shifter.  If we had a '96 console, things would have been much easier.  Unfortunately they are very expensive so the '95 console was used.  The two cup holders were situated exactly where the shifter needed to be so out comes the power tools. After the console area was cut, I purchased a piece of ABS plastic and formed it using a heat gun to match the contours.  It then got cut to make room for the modified shifter bezel. The panel was then glued to the console using ABS adhesive.  Because the colors didn't quite match, the console was washed and prepared for some SEM plastic paint. I am really happy with the end result.  Not sure if I'd want to do it again because as simple as it seems, I had 12+ hours into the console.

Speaker Box Build

When we initially went over the terms of the project, I stated that I did not want to do a full custom stereo installation.  As time progressed, I had spent so much time working on it, I didn't want to do a half-ass job finishing the trunk.  We went back and forth on ideas but in the end, I decided to just finish the car so Dan could enjoy it rather than get it back and continue to work on it. The first task was to build the speaker boxes that would house two Infinity Perfect 12 inch subs.  He wanted a good punch but not a booming sound.  After looking over the specs, that meant a sealed box of 1 cubic foot for each sub.  The trunk floor is not flat in a B-body so templates had to be built to accommodate the odd shape.  I decided to built 2 separate boxes - one for each side of the trunk. Here is the outline of the speaker box faces.  I had just barely enough room to mount a 12 inch subwoofer into the panel.  My goal was to be able to mount the amps and crossovers between the b