Quote:
Originally Posted by drpdmazda
my truck is an 89 4runner it came out of the same year just an sr5 i put my factory cluster back in and the factory sending unit and all works fine, the 4runner i took the cluster out of was definately a 4 cyl, i remember that it had the cylinder head off and only saw 4 pistons. so i am pretty confused right now
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Me thinks:
1) Something about the plug wasn't in right.
2) Gauge set is dead. There is a procedure for checking the gauges in the FSM. It's pretty easy... I've never head of an 1989 that's not setup for a tach. The input is on the ignitor.