Why is my 1990 jeep wrangler yj is running hot

Asked by GuruDR3R 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

Guru8C8S answered 7 years ago

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.

Mark helpful

Your Answer:

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

  • Find shop to fix 1990 yj wrangler 1 Answer

    I want to know which shop and fix my 1990 yj wrangler

    1990 Jeep Wrangler

    -

    Maintenance & Repair

  • I have a 1990 jeep wrangler 2.5 leter and it is running bad anybody can help 1 Answer

    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

  • 1989 Jeep Wrangler YJ won’t go into 4x4 high 3 Answers

    My 1989 Jeep Wrangler YJ will run great in 2x4 and 4x4 low, but when you switch it into 4x4 high, it don’t engage and does nothing, it just sets there and won’t move at all. Also the 4x4 shifter l...

    1989 Jeep Wrangler 4WD

    -

    Maintenance & Repair

  • 1990 Jeep Wrangler Islander 3 Answers

    I have a 1990 Jeep wrangler Islander, stock and everything is original. It has been sitting for 7 years and I have a mechanic that will look it over for me. Can anybody make a list of things I should...

    1990 Jeep Wrangler Islander

    -

    Maintenance & Repair

Shortcuts

Search Jeep Wrangler Questions

CarGurus Experts

  • #1
    Mathew Wooldridge
    Reputation
    1,530
  • #2
    djtm0500
    Reputation
    1,330
  • #3
    Nickjeep
    Reputation
    1,300
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford Bronco
24 Great Deals out of 1,289 listings starting at $37,000
Used Ford F-150
320 Great Deals out of 13,991 listings starting at $1,712
Used Toyota 4Runner
15 Great Deals out of 301 listings starting at $9,995
Used Ford Mustang
60 Great Deals out of 1,365 listings starting at $4,995
Used GMC Sierra 1500
132 Great Deals out of 6,515 listings starting at $3,975
Used Chevrolet Corvette
22 Great Deals out of 1,084 listings starting at $15,000

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. Content will be removed if CarGurus becomes aware that it violates our policies.