» » »

Toyota Q&A

Ask Your Question

1994 Toyota 4Runner Question: My 1994 toyota 4 runner overheat while driving on the highway but not in town.

 

Question

toyrunner4me, 3.0L V6, Beaverton, OR, December 12, 2013, 09:56
 Rookie

On the highway it gets hot when rpms are low but driving in town shifting the gears it cools to normal temps its a manual transmission, no water in oil.im wonderin if theres a sensor or anything else that would cause this.any help would be great.
Thank you.

2 Answers
Flag This
  • Answer #1

    G. T. Service Center (4215 Answers) , Stephenville, TX - (254) 638-3236
    ProfessorG December 12, 2013, 11:23
    Profile_thumbnail
     Master

    Does it stay cool on highway with RPM's high, or is this normal highway speed RPM's. Possible Radiator

    Flag This
  • Reply

    toyrunner4me, December 12, 2013, 15:44
     Rookie

    Normal highway speed when rpms are high it stays cool when low rpms get hotter

    Flag This
  • Reply

    ProfessorG, December 12, 2013, 17:52
    Profile_thumbnail
     Master

    Cooling fan, weak water pump, low flow at low rpm.

    Reply
    Flag This
  • Medium-star Best Answer
    Greg's Orange Auto (13724 Answers) , Orange, CA - (714) 361-9386
    globalhelper December 12, 2013, 12:54
     Master

    ck coolant level to start with, then pressure test cooling sysytem for leaks if low.if not low seek a diag for cause

    Flag This
  • Reply

    toyrunner4me, December 12, 2013, 15:46
     Rookie

    Level is good, new radiator in it guess i will pressure test.

    Reply
    Flag This