I have a 2018 JK 2.0 at shop at work. The vehicle happens to belong to my friends wife. I’ve known the guy for 30 years.
The vehicle was in an off roading accident. They drove into a “witches eye” at clamps sand dunes. It’s a steep, deep hole in the sand made by the wind, usually with a small plant at the bottom.
After getting the vehicle unstuck they had issues with drivability, low power and a slew of lights in the dash.
I’m new in this shop but they have been working on this jeep for a few months getting it back on the road.
The owners had to store the vehicle for 6 months while coming up with the money for a new generator and aux coolant pump.
After the job was done the aux coolant reservoir keeps going low on fluid. They pressure tested the system, it holds pressure and no leaks were visible.
I have been driving this jeep for the last couple weeks trying to diagnose the remaining issues. Coolant res low at random times, excessive charge air temps, excessive coolant temps and lack of power.
After the other guys in the shop had trouble finding any coolant leak I added leak detection dye to the aux coolant res. One drive on the freeway and I found coolant in the drivers side fender liner, coming from the res cap.
We ordered a new cap and it wouldn’t be delivered till after the weekend, so I had another few days to come up with a theory,
Aux Cooling system is going over pressure and puking out of the res cap. Where is the pressure coming from?
I have searched all over the interwebs and have found lots of coolant hose leaks and reservoirs that are cracked. None of this is the issue here.
While waiting on parts for another job the boss had me mess with the jeep again. “Figure out where the coolant is going.”
I wanted to use a smoke machine to fill the intake with smoke, then use a vacuum cooling system bleeder to pull air from the aux coolant reservoir. I started looking for a vacuum port to inject smoke.
I pulled the intake manifold vacuum line from the air filter box and immediately found flourescant leak tracer dye inside the vacuum line.
So I confirmed that there was coolant inside the intake manifold. I dug further, I removed the turbo charge pipe to gain access to the throttle body. We connected the battery, turned the key on and used the throttle pedal to open the throttle body. My boss used a boroscope camera to look inside the intake.
The intake was full of fluorescent coolant. The intercooler located inside the intake manifold has a leak. $1200 part on national back order
Chrysler has 72 of these manifolds currently on back order, yet nobody knows about this problem.
The vehicle was in an off roading accident. They drove into a “witches eye” at clamps sand dunes. It’s a steep, deep hole in the sand made by the wind, usually with a small plant at the bottom.
After getting the vehicle unstuck they had issues with drivability, low power and a slew of lights in the dash.
I’m new in this shop but they have been working on this jeep for a few months getting it back on the road.
The owners had to store the vehicle for 6 months while coming up with the money for a new generator and aux coolant pump.
After the job was done the aux coolant reservoir keeps going low on fluid. They pressure tested the system, it holds pressure and no leaks were visible.
I have been driving this jeep for the last couple weeks trying to diagnose the remaining issues. Coolant res low at random times, excessive charge air temps, excessive coolant temps and lack of power.
After the other guys in the shop had trouble finding any coolant leak I added leak detection dye to the aux coolant res. One drive on the freeway and I found coolant in the drivers side fender liner, coming from the res cap.
We ordered a new cap and it wouldn’t be delivered till after the weekend, so I had another few days to come up with a theory,
Aux Cooling system is going over pressure and puking out of the res cap. Where is the pressure coming from?
I have searched all over the interwebs and have found lots of coolant hose leaks and reservoirs that are cracked. None of this is the issue here.
While waiting on parts for another job the boss had me mess with the jeep again. “Figure out where the coolant is going.”
I wanted to use a smoke machine to fill the intake with smoke, then use a vacuum cooling system bleeder to pull air from the aux coolant reservoir. I started looking for a vacuum port to inject smoke.
I pulled the intake manifold vacuum line from the air filter box and immediately found flourescant leak tracer dye inside the vacuum line.
So I confirmed that there was coolant inside the intake manifold. I dug further, I removed the turbo charge pipe to gain access to the throttle body. We connected the battery, turned the key on and used the throttle pedal to open the throttle body. My boss used a boroscope camera to look inside the intake.
The intake was full of fluorescent coolant. The intercooler located inside the intake manifold has a leak. $1200 part on national back order
Chrysler has 72 of these manifolds currently on back order, yet nobody knows about this problem.
