Idle surging
#1
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Location: Corpus Christi, Texas
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Idle surging
In June I purchase an 02 4runner with 34000 miles on it. (mint condition) SR5.
The question I have is when running the heater at idle, is it normal for the engine to (surge) a little. The surging is intermittant. (maybe 15 second intervals)
Any help would useful
thank you
The question I have is when running the heater at idle, is it normal for the engine to (surge) a little. The surging is intermittant. (maybe 15 second intervals)
Any help would useful
thank you
#2
Contributing Member
In June I purchase an 02 4runner with 34000 miles on it. (mint condition) SR5.
The question I have is when running the heater at idle, is it normal for the engine to (surge) a little. The surging is intermittant. (maybe 15 second intervals)
Any help would useful
thank you
The question I have is when running the heater at idle, is it normal for the engine to (surge) a little. The surging is intermittant. (maybe 15 second intervals)
Any help would useful
thank you
.....because if you are then the AC will be cycling to dry the air (and there's your engine surge).
#5
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Forgive my ignorance of my '02's AC system.
Last edited by spage; 02-13-2007 at 10:36 PM.
#6
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Nope, as soon as you set it to "defrost" the system automatically turns on the AC to dry the air (whether you like it or not). I don't remember if the AC button lights up or not in defrost mode, but just about every modern car will do this. Pop the hood and you should be able to hear the AC kicking on and off and the idle increases when the AC is on.
#7
eratic idle speed
I have a 94 4 runner and I have a idle problem. Sometimes it runs at a fast idle 12,000 rpms and on other days its eratic. While stopping the idle will jump up and down. It seems to have started when i blew a bypass hose for the coolant, which was right by the throttle body. I cleaned the throttle body and checked for vaccum leaks and so far I haven't solved the problem.
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#8
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If you cleaned your throttle body with fluid, the fluid can effect the TPS. Check this link to 4crawler.com
Taken from http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml
common cause of this is using throttle body cleaner in the throttle body without removing the TPS. The cleaner can wick into the TPS via the actuator that rotates the TPS. The cleaner can attach the PC board and components and cause it to fail. If cleaning the throttle body, be sure to remove the TPS, and also try to avoid getting engine cleaner and water on the TPS, its not totally sealed.
#9
Registered User
I have a 94 4 runner and I have a idle problem. Sometimes it runs at a fast idle 12,000 rpms and on other days its eratic. While stopping the idle will jump up and down. It seems to have started when i blew a bypass hose for the coolant, which was right by the throttle body. I cleaned the throttle body and checked for vaccum leaks and so far I haven't solved the problem.
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