1989 Jeep Wrangler Jeep overheating

JEEP89WRANGLER

MEMBER
1989 JEEP WRANGLER
6 CYL
4WD
MANUAL
76,500 MILES

I installed a TBI kit on My '89 YJ from Howell. Ever since it has been overheating. The problem is the gauge doesnt register its overheating. I checked the oil and discovered my paint on my valve cover is bubbling. So I pulled the plugs which had blistered insulators, Why wouldn't the gauge register it running hot? I replaced the waterpump, thermostat, temp sensor and sending unit. I know its running lean. Which would explain the overheating, but not the gauge not working. Could I bypass the gauge with a temporary sensor to get an accurate temp reading? If so where can I find one?

Sunday, July 6th, 2008 AT 2:22 PM

1 Reply

BREWER

MEMBER
34 POSTS

Not familiar personally with the TBI kit you referenced - but. Your symptoms do sound like it's more of a gauge not functioning correctly than anything else. The reason the overheating is happening in the first place would be a stronger concern if I was in your shoes but ultimately you need to get it working correctly.

I would in your shoes, try to determine the cause of the overheat by contacting the supplier of your kit. I would then try to find an aftermarket temperature gauge and install one temporarily to see if it registers a similar temp range as your original one. That should help to clarify if the gauge is also in need of replacement.

Good luck!

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Sunday, July 6th, 2008 AT 5:05 PM