different overheating problem
#1
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different overheating problem
I have 240,000+ mile on my 90 4runner & in traffic with the A/C on no problem I can hillclimb with the A/C on & still no problems but the min I get to 65-70 & hold that speed it starts heating up I can turn on the rear heat & it helps alittle. I did a flush & a new 180 thermostat it runs cooler at lower speeds.
I'm prob going to get a new radiator but wanted to see if anyone had a other ideas.
I'm prob going to get a new radiator but wanted to see if anyone had a other ideas.
#6
Perhaps a bad t-stat...clogged heater lines...got any leaks? I'd say it is something other than the radiator...unless it is clogged...but you'd think a flush would clean it out.
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#10
Ok, well let us know what it is,,,,I figured i would pull the radiator and have it rodded. Thats what the problem is I bet. But f just doing a flush works ,,,then I would rather go that route
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check aux cooling fan
Hey dude, dont forget to check the operation of your aux cooling fan, operated by thermo switch... sounds like the prob may be happening during a/c poeration.
#12
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To me it sounds like a radiator problem. At highway speeds, the "ram air" does most of the airflow through the radiator. Does your aux fan function with the A/C on? Radiator isn't packed with mud?
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I had the same problem. I took the radiator to a shop close by to check the flow and they told me that it was fine. They tested it by filling it with a garden hose and if it didnt back up then it had a good flow. That made since to me at the time so I ended up pulling my tarus fan, buying a new shroud and after market fan clutch just to have the same problem.
I ended up going to another shop and the guy showed me just how bad the radiator was when he was rodding it....I ended up getting a new radiator and things have been fine ever since....
I ended up going to another shop and the guy showed me just how bad the radiator was when he was rodding it....I ended up getting a new radiator and things have been fine ever since....
Last edited by w3s; 05-22-2006 at 10:13 PM.
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I installed a new radiator last night along with a Taurus fan. It idled for almost 20 mins with the air on & no problems. I hit the interstate & had no heating problems. But it was night so I will see later on today.
I was suprised to find a good bit of crap on the front of the radiator blocking airflow.
I was suprised to find a good bit of crap on the front of the radiator blocking airflow.
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Ok that was it. The new Radiator fixed it. So daveyboy if yours is doing the same thing then there is a good chance its your radiator or its blocked
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