The dreaded 0331 cracked head

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Jan 28, 2018 | 10:08 PM

try

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Model: Cherokee(SJ)

The dreaded 0331 cracked head

Why would a cracked head (0331) not eat coolant onnthe highway? Speeds ranged from 40 to 70mph.

Jan 29, 2018 | 12:11 AM

tech

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Joined: Jun 2016

Posts: 2,138

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From: Santa Clarita California

Year: 2001

Model: Cherokee (XJ)

Engine: 4.0L

How hot or how cold was it when you were on the highway?

Jan 29, 2018 | 12:13 AM

try

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Quote:

Originally Posted by tech

How hot or how cold was it when you were on the highway?

Cold(ish) weather. 2 degrees C or about 35F. Temp gauge stayed dead center.

Jan 29, 2018 | 11:51 AM

Tbone289

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Joined: Oct 2011

Posts: 1,394

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From: SEMO

Year: 2000

Model: Cherokee (XJ)

Engine: 4.0 L6

I think a better question is why are you driving it with a cracked head?

Jan 29, 2018 | 12:24 PM

try

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Quote:

Originally Posted by Tbone289

I think a better question is why are you driving it with a cracked head?

Because we didn't know where the coolant leak actually was. Rad, water pump, and thermostat were all replaced, as well as a couple heater core flushes. We only figured out the head is cracked after finding the forums here, and then I started looking for the crack, and used the methods prescribed by members here. 25k miles or 40k kms with a cracked head, lol.

Jan 29, 2018 | 12:30 PM

Tbone289

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Joined: Oct 2011

Posts: 1,394

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From: SEMO

Year: 2000

Model: Cherokee (XJ)

Engine: 4.0 L6

Ah, OK. Gotcha. So, during that 25K miles, you weren't loosing coolant while running at highway speeds, but you were otherwise?

Jan 29, 2018 | 12:46 PM

try

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Quote:

Originally Posted by Tbone289

Ah, OK. Gotcha. So, during that 25K miles, you weren't loosing coolant while running at highway speeds, but you were otherwise?

Nah, losing coolant all the time mostly, but the most recent highway trip (Mom's vehicle, travels back and forth about 180 miles between home and her mom's place regularly as she is 1 of 2 caregivers for her mom) we had traveled 125 miles with no coolant loss. Today, at trip completion, and vehicle sitting overnight, about a quart was gone. After highway trip completed, it was driven 20(ish) miles in city.

Last edited by try; Jan 29, 2018 at 01:18 PM.

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Jan 29, 2018 | 01:17 PM

Jeepin'_Aint_EZ

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From: Ocean County, NJ

Year: 1998

Model: Cherokee

Engine: 4.0L

Hi,

Jan 29, 2018 | 01:18 PM

try

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Quote:

Originally Posted by Jeepin'_Aint_EZ

Hi,

Lmao, fixed

Jan 29, 2018 | 01:44 PM

#10

Jeepin'_Aint_EZ

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From: Ocean County, NJ

Year: 1998

Model: Cherokee

Engine: 4.0L

Glad you have a sense of humor! Have you physically checked and looked to see if there is a crack in the common area?

Jan 29, 2018 | 01:46 PM

#11

try

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Quote:

Originally Posted by Jeepin'_Aint_EZ

Glad you have a sense of humor! Have you physically checked and looked to see if there is a crack in the common area?

Looked, didn't see one but found a lil milkshake on the oil cap today. When I looked initially I saw a good 6 dots of green under the valve cover though. Leak down test being performed today, maybe tomorrow.