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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Throttle issue

Old 12-14-2008, 09:51 AM
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Throttle issue

I bought my 4Runner used, there were a lot of problems, but I was able to fix most of it up. When I'm driving down the road and release the throttle, it pulls on the truck, as if I'm in too low of a gear. I've tried shifting into a higher gear, and it still has the same problem. Also, sorry if I put this thread under the wrong area, I'm still new to posting. Thanks in advance.
Old 12-14-2008, 10:25 AM
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Define "pull" please. Does it pull it left or right or what?
Old 12-14-2008, 10:46 AM
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It decelerates, so it pulls backwards, similar to the brakes being on.
Old 12-14-2008, 10:57 AM
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is it a sudden deceleration feeling? sounds like that is what you are indicating by saying 'as if in a lower gear'. describe your truck more, motor, trans so we can better help you.

lee
Old 12-14-2008, 11:19 AM
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From your post it sounds like something is dragging. As dumb as this may sound to suggest is the e-brake hanging up? Maybe a brake pad/shoe somewhere that is rubbing?

Take it out and drive it, get it up to speed and pull it out of gear (assuming you have the manual tranny). If it still "pulls down" then it's something in the drivetrain other than the motor. Perhaps a bearing that is dry? Have you checked the fluids in the diffs, tranny, t-case?

Just some thoughts to get you started.
Old 12-14-2008, 12:01 PM
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It's a V6 3.0 it has a manual transmission, no there is nothing dragging because when I put it in neutral it coasts fine. It doesn't slow down too much either, just enough to feel it. Which is the reason that I'm completely stuck.

Last edited by ACSig; 12-14-2008 at 12:03 PM.
Old 12-14-2008, 12:06 PM
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maybe its just the simple fact that your taking your foot off the gas..?


Old 12-14-2008, 12:12 PM
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No, I may not be that great with vehicles but it's more than that.
Old 12-14-2008, 12:16 PM
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Fan clutch stuck? Does the fan slow right down and hardly move when the truck is idling and warm? If the fan is at full engine speed then it is NG.
Old 12-14-2008, 01:07 PM
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I don't think that it is the fan but I'll check it out. One theory of mine is that the intake valve might be dirty, because the gas pedal has been sticking, I'll try to get to it tomorrow.
Old 12-14-2008, 06:20 PM
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Ya but if it sticks open the opposite of what you are saying will happen.
Old 12-14-2008, 06:25 PM
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what work (if any) have you done to the engine?
otherwise, it sounds like you're experiencing engine braking effects.
Old 12-15-2008, 11:53 AM
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what work (if any) have you done to the engine?
otherwise, it sounds like you're experiencing engine braking effects.
Yes, I've changed the timing belt, and water pump, but it was doing this previously anyway. Yes, it probably is engine braking but it's more severe than what it should be, do you no of any fixes for this?
Old 12-15-2008, 01:15 PM
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if it's not doing it any worse than it was before the work, I wouldn't think you have a problem.

not knowing anything about the truck makes it hard to diagnose. could be a result of gear ratios, cam, transmission problem, dragging brakes, etc.
Old 12-15-2008, 02:55 PM
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I bought it about 2 months ago, it was doing it ever since I drove it home. I have been doing a lot of work since it was in pretty bad shape, and haven't gotten to drive it since some the work due to the heater core being broken. When it gets inspected I'll ask the mechanic about it then. Thanks anyway guys.
Old 04-19-2009, 05:56 AM
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I thought I would bring this back from the past to maybe help someone. I was having problems with my 22re this same as this. Let off the throttle and the "jake Brake"comes on.
It turned out to be that some vacuum hoses were on the wrong tubes. This was causing the fuel pressure regulator to open under deceleration because of the vacuum when the throttle plate closed. So the fuel was actually shutting off. So it was like you shut the key off while driving. But once the engine idled down the vacuum would go away and it would idle fine.

Take it for what its worth.......
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