Main Relay Overheating and Blowing - Damaged Wire from Previous Owner's Wiring

Electricalintermediate✓ OP Confirmed

Problem

Car kept blowing the main relay. After replacing the relay, it worked for about 30 miles before dying again. The new main relay was boiling hot after the car was shut off and would not restart.

Main relay blowing repeatedlyReplacement main relay gets boiling hotCar dies and will not restart after short driveNo-start condition

Root Cause

Previous owner had non-standard wiring. A wire that controlled the spark and fuel injectors had ripped/broken, causing a short circuit that overloaded and overheated the main relay.

Confidence

Low confidence — Original poster confirmed this resolved the issue

View Original Thread →Posted May 2023 on SupraForums.com