navigator Posted October 21, 2009 Share Posted October 21, 2009 on my MJ and my heat works fine. It has been that way since I got it this spring, I only drive it sparingly. Does this sound like the sender or the gauge or do you guys think this is normal? I know th XJ runs about 210. My Oil gauge is also pegged all the way to the right so I know i likely need a new sender/gauge there. Could they be related? Link to comment Share on other sites More sharing options...
MiNi Beast Posted October 21, 2009 Share Posted October 21, 2009 ground out your oil sender deal and if gague goes back to 0 then you just need a new sender but if not then just may be the gaguge cluster Link to comment Share on other sites More sharing options...
SkiBum1229 Posted October 21, 2009 Share Posted October 21, 2009 My oil pressure guage reads just below 80 and my coolant temp guage never goes above 130. Put a new 190 thermostat in and the heat blows very hot. Its been like this on mine for at least 5 years. Link to comment Share on other sites More sharing options...
maddzz1 Posted October 21, 2009 Share Posted October 21, 2009 Mine stays at around 160 too, I always thought it was because my truck is so cool. Link to comment Share on other sites More sharing options...
CWLONGSHOT Posted October 22, 2009 Share Posted October 22, 2009 The 4.0L needs to run at or near 200 degrees for things to work correctly. A thermostat in one should NEVER be less than a 180. CW Link to comment Share on other sites More sharing options...
maddzz1 Posted October 22, 2009 Share Posted October 22, 2009 The 4.0L needs to run at or near 200 degrees for things to work correctly. A thermostat in one should NEVER be less than a 180. CW I'm pretty sure my gauge is just wrong. I put a new 195* thermo in before I switched my cluster and sending units. Link to comment Share on other sites More sharing options...
Oizarod115 Posted October 22, 2009 Share Posted October 22, 2009 the senders in the renix trucks like to lie, mine read about 60* hot for several years (more than one headache over that) check the temp with a laser-thermometer and if the gauge seems off i'd be willing to bet its the sender not the gauge. the oil pressure gauges also have issues because they're in a good spot to get whacked when removing the oil filter, and sometimes they just fail for no reason. the one in my truck is intermittent, normally sits on 50 and never moves, then will begin working for a while again. Link to comment Share on other sites More sharing options...
navigator Posted October 22, 2009 Author Share Posted October 22, 2009 thanks guys, especially for the info on the oil pressure gauge so I can test it. Those senders aren't but like $10-$15 so if i have any question i'll just replace them anyway. Link to comment Share on other sites More sharing options...
MiNi Beast Posted October 22, 2009 Share Posted October 22, 2009 thanks guys, especially for the info on the oil pressure gauge so I can test it.Those senders aren't but like $10-$15 so if i have any question i'll just replace them anyway. Shoot I just payed $45 for my 93 XJ, i should of just but an electrical one like I did my rig, cost only $18. Link to comment Share on other sites More sharing options...
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