Toyota 4runner Dies at Stops.

When Driving my 4runner the vehicle dies after I take my foot off the gas., I recently had major work done on the heads and I know the knock sensor needs replaced. It seems as soon as I lift my foot off the gas the rpm's drop so low it wont stay running. What could this be?? Please help.

3 Answers

Art Vandaleh

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Posted on Jan 30, 2018

Art Vandaleh

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Can also be the idle control valve. What sort of work had been done on it?

Adam Truesdale

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Posted on Jan 30, 2018

Adam Truesdale

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Sounds like the throttle sensor may need adjustment. Ya I seen this before where i stepped on the brakes and it wanted to die. Might be a forum post to show how to set and test

Bill Boyd

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Posted on Jan 30, 2018

Bill Boyd

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Run the fault codes
could be a vacuum leak from a bad brake booster of hoses not properly connected after the work

5 Related Answers

Anonymous

350 Answers
Posted on Oct 12, 2008

SOURCE: 90 Toyota 4Runner pinging noise

hi the pinging you here is ignition firing before it should but if you have a knocking noise i would suspect the worse but try doing a compression test first see if everything is in order then if this seems ok have you put fuel in it just before it started if so change your fuel if not see if the electrical system has a knock sensor if so run the engine and tap the block close to it see if engine revs drop if not replace but the knock is a piston best of luck yates210456

Anonymous

77 Answers
Posted on Dec 24, 2008

SOURCE: 2003 Toyota 4runner dies/won't start

CHECK FUSE FOR START ASSIST RELAY

Anonymous

2004 Answers
Posted on Mar 18, 2009

SOURCE: 2002 toyota camry dies when I take my foot off the gas pedal

The ignition is too low (i,e, rpm). Increase it.

Anonymous

43 Answers
Posted on Apr 05, 2009

SOURCE: 2000 Camry Starts but dies down right away

Hello

I just worked on this problem a couple of days ago. If the motor is a 3.0 liter. The idle control valve is located at the bottom of the throttlebody assembly right below the bore for the throttle butterflies..What usually causes this valve to go bad is the mechanical part of the sensor sticks as it becomes sludged or carboned up. Manufacturer claims that the valve cannot be cleaned and should only be replaced....It's a high dollar repair to replace this sensor as your engine coolant flows through this electrical valve. The valve idles the car fast when cold, as the antifreeze gets hot the valve drops the idle down.....I have successfully cleaned several of these valves and cured the dying problems...
First remove the air filter top cover and the tubes that connect to the throttlebody. In the right throttlebody you will see a port right before the butterfly. Under the throttlebody you have a black plastic sensor with a 2 wire terminal. Remove the 2 phillps screws and pull off the electrical part of the valve. you will feel a magnetic pull while removing. Remove slowly and catch the black sealing oring, and there will be a metal washer also.. The shaft that is exposed is the mechanical control of the valve. Rotate the shaft and it should feel sticky if bad..Using a throttlebody spray cleaner spray into the small square port of the right bore, rotate shaft and spray until stickfree.....Reassemble

kirtec auto

1348 Answers
Posted on Jul 18, 2009

SOURCE: when it is warm my 1994 toyota pick up with 22re

the idle air control valve on the throttle body.

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