Why is my 1990 jeep wrangler yj is running hot

Asked by Mar 22, 2017 at 09:58 PM about the 1990 Jeep Wrangler

Question type: Maintenance & Repair

My 1990 jeep wrangler yj 2.5l 4cyl is running at 210 to 230 in sometimes close
to 250 . when its idealing its normally stays at 210 but sometimes jumps to
230. On the roads it normally at 230 but jumps up to 250 sometimes. I replaced
the tstat,temp sensor, radiator, waterpump,fan, all the coolant hose's and I
flushed out engine block .I used 5050 coolant  and after all that I still have the
same problem. Oh and i checked if there was exhaust fumes going in coolant in
that was good . so does anybody have any ideas what could be wrong.

1 Answer

Keep in mind this YJ 2.5l engine is a truck engine and built very tough, not like a car 4 cyl. Temps at 250 will not harm it. I bought my '95 Rio Grande Edition new and it does the same thing with the a/c on in traffic when new and still does now. Jeep at that time told me not to worry about it, that it was normal and the thermostat would finally open and cool way down, and it does. I still own this vehicle and it has 210,000 miles on it and still runs great. The 2.5l engines are just like that.

Your Answer

Add photo

Related Questions

  • Why is my 1990 jeep wrangler yj is running hot 1 answer

    My 1990 jeep wrangler yj 2.5l 4cyl is running at 210 to 230 in sometimes close to 250 . when its idealing its normally stays at 210 but sometimes jumps to 230. On the roads it normally at 230 but ju...

    1990 Jeep Wrangler

    -

    Maintenance & Repair

  • I have a 1990 jeep wrangler 2.5 leter and it is running bad anybody can help 2 answers

    I t ask like it is not getting anough gas, and back fireing really bad, and will not go over 20 mph

    1990 Jeep Wrangler S

    -

    Maintenance & Repair

  • My Automatic 95 Jeep Wrangler Is squeaking. 1 answer

    I have a automatic 95 Jeep Wrangler. Now every time I start it up, the squeaking isn't there, but when I accelerate or push on the gas the squeaking gets louder and faster. We just changed the serpe...

    1995 Jeep Wrangler

    -

    Maintenance & Repair

  • guess my JEEP YJ doesnt like hot weather........

    so, the thing is: i have a 1991 wrangler, with a 1995 Cherokee engine under the hood ... automatic. during winter it runs awesomely ... but when it smells warm weather, starting in the spring ... i...

    1991 Jeep Wrangler 4WD

    -

    Maintenance & Repair

  • Why does my 2012 Jeep Wrangler die when going slow?

    My 2012 Jeep Wrangler is dying when I slow down to turn or pull into a parking lot. It also dies when backing out of a parking space. It has 86000 miles. I had the auto repair check it out because i...

    2012 Jeep Wrangler Sahara

    -

    Maintenance & Repair

Search Jeep Wrangler Questions

Jeep Wrangler Experts

#1 Tom Demyan
Tom Demyan
Reputation 370
#2 tennisshoes
tennisshoes
Reputation 360
#3 Mathew Wooldridge
Mathew Wooldridge
Reputation 350
View All

Related Models For Sale

Used Jeep Cherokee
131 Great Deals out of 6,381 listings starting at $9,895
Used Ford Mustang
4 Great Deals out of 1,358 listings starting at $5,980
Used Ford F-150
304 Great Deals out of 8,874 listings starting at $1,600
Used Chevrolet Camaro
848 listings starting at $8,995
Used Toyota 4Runner
5 Great Deals out of 412 listings starting at $3,750
Used Chevrolet Corvette
658 listings starting at $4,450

Used Cars For Sale

2017 Jeep Wrangler For Sale
950 listings starting at $26,995
2016 Jeep Wrangler For Sale
10 Great Deals out of 91 listings starting at $26,800
2015 Jeep Wrangler For Sale
23 Great Deals out of 84 listings starting at $23,900
2014 Jeep Wrangler For Sale
19 Great Deals out of 56 listings starting at $20,995
2013 Jeep Wrangler For Sale
9 Great Deals out of 63 listings starting at $19,695

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.