How do I change the coolant in my 1990 Jeep?


Asked by Dec 23, 2012 at 03:47 PM about the 1990 Jeep Cherokee

Question type: Maintenance & Repair

Where is the collant drain?

3 Answers



1 out of 1 people think this is helpful.

The drain petcocks fill with crud anyways. Replace the wire clamp with a new stainless hose clamp. Flush it out with water a couple of times. When ready to refill, pour in half the coolant volume with straight anti freeze. Fill the rest of the way with distilled water. That way, any water remaining in the block will be added to the 50/50 mix.

1 out of 1 people think this is helpful.

Most people forget to open the coolant drain on the block when changing ar flushing their cooling systems. Unfortunately the drain plug on the 4.0 is cleverly hidden under the manifols and can be a bugger to spot. Also, be careful when the engine is hot. Before changing the coolant are you going to run some cooling system cleaner before draining, flushing and refilling the system? As tenspeed intimated, a lot of crud builds up in the system.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 1990 jeep cherokee overheating and overflow? 14 answers

    my jeep will run and idle, but when i drive it just a few blocks, it starts overflowing out of the radiator reserve. any helping comments are appreciated

    1990 Jeep Cherokee 4 Dr Limited 4WD


    Maintenance & Repair

  • To much pressure in my coolant reservoir? 6 answers

    1990 Jeep Cherokee Inline 6 My Jeep started getting hot, I decided to try to put coolant into her as she had sat for a few months. Used an entire container! No apparent leaks, I ran her for a while ...

    1990 Jeep Cherokee 4 Dr STD 4WD


    Maintenance & Repair

  • 1990 Jeep Cherokee Coolant sensor, where the hell is it!

    All videos I watch show the sensor on the housing for the thermostat. That is not the case for me. I have seen one video with is on the side of the engine block, if that is the case how do I get to ...

    1990 Jeep Cherokee 4 Dr STD 4WD


    Maintenance & Repair

  • what other vehicles will a 2.5 litre jeep engine fit into? 30 answers

    I have a 1987 jeep cherokee that I cannot get to start. After installing a new starter it started one time and now i cannot get power to ANYTHING! I believe I have a dead short somewhere. I would rath...

    1987 Jeep Cherokee


    Maintenance & Repair

  • Are 1990 jeeps good 3 answers

    I have a 1990 Jeep Cherokee Laredo just wondering if the straight 6 Motors are good and what is the best way to maintain the engine

    1990 Jeep Cherokee 4 Dr Laredo 4WD




Looking for a Used Cherokee in your area?

CarGurus has 52,951 nationwide Cherokee listings starting at $2,495.


Search Jeep Cherokee Questions

Jeep Cherokee Experts

#1 Daniel Guillen-Pizzorni
Daniel Guillen-Pizzorni
Reputation 980
#2 swtcat13
Reputation 900
#3 JimRoy
Reputation 810
View All

Related Models For Sale

Used Jeep Wrangler"
427 Great Deals out of 16,188 listings starting at $2,395
Used Toyota 4Runner"
379 Great Deals out of 18,456 listings starting at $2,400
Used Ford Explorer"
1,307 Great Deals out of 71,016 listings starting at $985
Used Ford F-150"
3,128 Great Deals out of 215,446 listings starting at $1,000

Used Cars For Sale

2017 Jeep Cherokee For Sale
28,043 listings starting at $18,573
2016 Jeep Cherokee For Sale
134 Great Deals out of 17,322 listings starting at $15,411
2015 Jeep Cherokee For Sale
134 Great Deals out of 3,948 listings starting at $12,999
2014 Jeep Cherokee For Sale
96 Great Deals out of 2,795 listings starting at $11,000
2001 Jeep Cherokee For Sale
207 listings starting at $4,995