splblackxj

so its at it again lol bacicly its been over heating when i am standing still only or driving down residential streets i have no bus gadges so i installed a mecanical temp gadge and its been workin verry accuratly i do between 190-210 on the highway but as soon as i get on a residential street it goes to 230 and higher.there is no cooliant in the oil im not smoking at all and there is no smoke coming from my engine bay..i am afrade its the head gasket tho but i needed some clarity..also the heater core just went bad and i have it bypassed so the imput line to the core is to the imput on the thermostat housing...problem started about a week ago lmk if anyone has any solutions b4 i start changing everythin out..thx guys

splblackxj

anyone

93gc40

Is your electric fan turning on? Are you loosing any coolant? Have you checked the Mech fan clutch? When was the T-stat changed last and what temp is it rated? Are you running 50/50 coolant or water? What happened with the heater core? Auto or manual Tranny?

I'm leaning bad fan clutch maybe T-stat, also.

canoe58

I had a similar problem and ended up changing the fan clutch.
Hope that helped some.

tuxfan212

I think I am overheating some as well I need to get a gauge though. In any case how do I do the mech fan clutch and how much does it cost.

splblackxj

my electric fan is hardwired and is on one i turn the electric on no im not loosing coolant fan clutch is new cause that was lastyears overheating problem t-stat was changed 2 weeks ago and is a 160 im running water cause its been over heating and thats all i got on me and the heater core sprung a leak so that is why i bypassed it and its got an auto tranny

splblackxj

i pulled a whole fan assembly out of a junker its easyer that way it was 25 at a local yard and if u can go to auto zone and get the mecanical gadge they sell it works down to a dime

splblackxj

yea last year mine was to the point where i was able to stick my finger in it at high rps and it would just stop

fishtaconc

not the best way to check the the mechanical fan.......children do not try this at home lol.

tuxfan212

Wow yeah I read that and I was like WHAT!!! what are other ways of testing it??? I really like my fingers.

splblackxj

when the truck is off u can test it too just see if there is some resestance when u spin it...mine was bad to the point that i saw that it was not spinning fast when the xj was running