BigMatt

alright guys I'm dead in a parking lot I need help. I bypassed my heater core last night and today my jeeps running at 245. Any ideas of why this is happening and what I can do to fix it.

freegdr

stuck thermostat,fans not working ,low on coolant plugged rad...why did you by pass heater core?

ZINGGG

It wasn't doing this before you bypassed it? You may have gotten a bubble in the system

freegdr

air pockets in cooling systems only affect closed cooling systems 87 to 90 renix jfyi

ZINGGG

:facepalm: DUHHHHHH I knew that. Brain fart.

freegdr

lol if it wernt for them id have no brain waves at all

Firestorm500

Blown head gasket?

Cracked head?

Plugged cat/exhaust?

Probably nothing you can fix in a parking lot. Call a flatbed.

BigMatt

Heater core leaking was leaking on the interior. One of my fans isn't working it's on a toggle and it just won't turn on

freegdr

when its over heating when stoped and bumper to bumper traffic?

BigMatt

It overheated worst when I was stopped or under 20 yes. It would continue while it was running in general.

BUT it's fixed now replaced all the wires and grounds. New inline fuse and it turned right back on keeping it at 210 pretty steady. It'll work for now.

Firestorm500

That's great.

Good luck with the heater core.

BigMatt

Thanks I'll attempt the replacement this summer.

kjc

Does your jeep have a mechanical fan with a clutch? A bad fan clutch is often the reason for overheating while sitting/idling or in slow traffic.

freegdr

nope electrial grounds fixed a coolant problem...

BigMatt

Fan sucks air through the radiator, plus it's aimed directly at the exhaust manifold. It sucks cool air through the radiator helping cool down the coolant. Pushes the hot air out of the bay to keep the hoses cooler. Makes sense I think.