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

Jeep Wrangler Experts

  • #1
    tennisshoes
    Reputation
    440
  • #2
    Tom Demyan
    Reputation
    430
  • #3
    Mathew Wooldridge
    Reputation
    350
View All

Related Models For Sale

Used Ford F-150
3,116 Great Deals out of 231,599 listings starting at $1,300
Used Jeep Cherokee
306 Great Deals out of 54,230 listings starting at $2,000
Used Ford Mustang
354 Great Deals out of 42,608 listings starting at $1,488
Used Chevrolet Camaro
415 Great Deals out of 31,698 listings starting at $3,495
Used Toyota 4Runner
349 Great Deals out of 29,855 listings starting at $1,500
Used Chevrolet Corvette
118 Great Deals out of 16,190 listings starting at $3,995

Used Cars For Sale

2018 Jeep Wrangler For Sale
6,461 listings starting at $21,417
2017 Jeep Wrangler For Sale
10 Great Deals out of 2,783 listings starting at $22,880
2016 Jeep Wrangler For Sale
26 Great Deals out of 877 listings starting at $20,467
2015 Jeep Wrangler For Sale
52 Great Deals out of 1,296 listings starting at $17,889
2014 Jeep Wrangler For Sale
31 Great Deals out of 899 listings starting at $15,990

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.