Recent content by tygersquirt

None taken, I was just covering all my bases to ensure no damage was being done to the motor. I appreciate the help!

Well, considering the temp gun is reading correctly, the only other issue it could be is a faulty temp sending unit, or gauge in the dash. Will give it a look over tomorrow morning. I appreciate the help, everyone.

Update; New 195F Thermostat, burped, cooled, burped, cooled, burped. Still reading 260F+ Temp readings are as follows; Thermostat housing: ~180F Top Radiator Hose: ~145F Heater Core Hose to TStat: ~160F Heater Core Hose to Water Pump: ~157F Back of head near temp gauge (1 wire): ~215F Bottom...

This will be the third time burping. I’m letting it cool down at the moment and heading to the parts store to grab another TStat to try out, hoping that is my issue.

Another update; I am not so sure my thermostats are actually opening up once installed. I’ve put in both of the ones I have, and while attempting to flush I am noticing few bubbles, but no more coolant is going into the radiator. When running with no thermostat and plain water, temp gauge went...

Have not flushed the radiator yet. Doing this now and will update temps after burping.

Update; after driving 5 miles and idling for 20 minutes, temps with IR Gun are as follows; (all temps taken multiple times and within a 5F difference each time) Thermostat housing: ~158F Top Radiator Hose: ~130F Heater Core Hose to TStat: ~150F Heater Core Hose to Water Pump: ~160F Back of head...

Not sure if you've taken it to the shop yet, but all you really need them to do is deck the head. I just did a full rebuild on my 4.0. The head is super easy to disassemble and rebuild yourself. Plus it will save you money in the long run. All of the tools you need for the head can be bought for...

Sorry for the late response, been super busy at work but have the next four days off. I wasn't trying to say it was an issue, I was simply stating facts to help solve my problem. I ensured it was a 195 T stat, verified it was working with the boiling water method, as well as bleed hole at the...

No Teflon or sealant was used for the two temp sensors. I’ll give them a good clean and give it a try. I read online that the aftermarket sensors have a bad rep. I’ll hit the Jeep dealer in town today to see if I can get an OEM.

That will be my next step. Thanks for the input. Thought just crossed my mind, does the temp sensor have a ground wire? If so, mine definitely does not. But then again, starting the Jeep it will read cold, and gradually peg out after about 5 minutes of idle/driving.

Hello all, me again. I’m just finished up an engine rebuild of my 94 4.0. Took it for a test drive and noticed the engine temp was maxed out. Here is what I have done; Pulled thermostat, tested it in a pot of boiling water, and drilled air escape hole. Water pump is new and rotating the...

Thank you for the reply! I’m not entirely sure if that would work or not, but it’s a thought. I just recently figured out what the issue was, which was a little obvious once I realized what I was working with. The PO put a 4.2 crankshaft in the 4.0 block. I took both engines apart today and...

Hey y’all, let me start off by saying I am new to this forum, I’ve attempted multiple times in asking my question to a few YJ Facebook groups but they all seem to just say “send it” to my questions. I’ve heard pretty good things about this forum so here goes; (and I apologize if this has been...