Renix (1987 to 1990): ground refreshing for better starts and drivability

Overview

On an '87 to '90 XJ, bad grounds cause more mystery problems than almost anything else. Random stalling, weird idle, hard starts, bad sensor readings, a lot of it goes away after you clean and re-do the grounds at the engine, firewall, and body. It's free labor and it works. Do this before you start chasing sensors.

What you need

• Basic hand tools
• Flashlight
• Optional: multimeter

Quick checks first

1. Quick check 1
2. Quick check 2
3. Quick check 3

Step-by-step

1. Step 1
2. Step 2
3. Step 3

If that did not fix it

• Next likely cause 1
• Next likely cause 2

Videos

• Renix ground and wire repairs (YouTube)

Source links

• Cruiser54: Renix Ground Refreshing
• Cruiser54: Mostly Renix Tips index

We try to keep our links up to date. If a link is broken, please let us know so we can update it.