07 4Runner

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07 4Runner

Postby nedzad2 » Mon Jul 18, 2016 1:57 am

07 4Runner SR5 4WD is not cooling good on hot Texas days. It works but seems it can't keep up with 100 F outside temp. If temp is set at 72 it will constantly blow at highest setting. I put gauges and the readings are 40 for low side 250 for high side, and it's constantly like that. The ambient temp was 100F. When I hose condenser with water high side pressure drops down and it blows really cold air. If I lower temp to 68 the pressures drops down also 35 for low and 200 for high. The fan is belt driven. Any idea?
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Re: 07 4Runner

Postby GM Tech » Mon Jul 18, 2016 2:41 am

If it is a clutch fan, then replace it, based on water hose test.....
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Re: 07 4Runner

Postby nedzad2 » Mon Jul 18, 2016 3:30 am

Is the fan supposed to run faster with AC on?
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Re: 07 4Runner

Postby GM Tech » Mon Jul 18, 2016 1:24 pm

Not unless it is electrically controlled...a/c needs tons of air -fast. I hate clutch fans, you can never depend on them to pull enough air to satisfy the condenser.
'95 Chevy 3500 454 Dually 142,000 miles
'94 Chevy Astro Van 358,000 miles!
'86 Buick Park Ave 192,000 miles
'86 GMC S-15 Pick-up 150,000 miles
'92 Chevy Lumina Van - 265,000 miles- given to me to see how far it can go! all above are white!
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