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

throttle jurk

Old Oct 21, 2008 | 11:09 PM
  #21  
Ares's Avatar
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From: Ellensburg, WA
Yea...I'm one of those non-seafoam people

Good news, adjusting the TPS to the high end of the range, about 750ohms fixed the issue just fine. It was actually pretty gummed up, not snapping back like it should.

And yea, my dashpot is pretty dead too which will probably help out a fair bit, but thats a task for another day. THanks for the help everyone
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Old Oct 21, 2008 | 11:14 PM
  #22  
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From: Temecula Valley, CA
welcome! a little more fine tuning and you should be golden.
(I'm not a big seafoam fan either- through the tank is one thing, a bit to flush the crankcase before an oil change is another, but sucking it in the intake?)

Last edited by abecedarian; Oct 21, 2008 at 11:15 PM.
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Old Oct 22, 2008 | 12:08 AM
  #23  
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From: maple ridge, British Columbia, Canada
I seafoamed my truck today. 1/2 can into the brake booster line, then a can in the gas. My injectors were starting to stick pretty bad (cheap mans cruise control?)....
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Old Oct 22, 2008 | 12:13 AM
  #24  
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From: Temecula Valley, CA
As much as I like you Jay, I'd rather spray solvent in through the throttle body, let it soak a moment, then start the truck letting it suck the residue in, as opposed to having the solvent sucked right through... hoping it will bring some gunk along with it.
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Old Oct 24, 2008 | 08:43 AM
  #25  
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From: Moneta/Charlottesville, VA
Dashpot/TPS

Abe,

I never meant just to aimlessly set the TPS, simply set it to the higher end of the ohm range, give a little more "ummpph" and better pedal, at least in my truck. Also, the dashpot does do more with emissions than I had said, but mine was jerking terribly at one point, it really was as if you hit a nitrous button then let off both that and the accelerator at the same time when you let off the pedal; so, in this instance, it slowed the closing of the TB and allowed the truck to ease out instead of dropping.

I'm having a new problem now though. When I reset the AFM/TPS/adjusted the dashpot, I could tell a huge difference instantly. Now though, it will start just fine on initial startup, especially in cold weather. However, if I let it sit for even 5 minutes then come back, it will start, then be very sluggish through 1st and 2nd, but when I hit 3rd it goes away then will run fine through all gears after that, 1-5, almost like it needed to drop a load then it could run fine, like this guy-

Ideas? Anyone?
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Old Oct 24, 2008 | 08:48 AM
  #26  
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From: maple ridge, British Columbia, Canada
I let the truck sit as soon as the engine was loaded with it

Instant improvement. Quicker throttle response and no more sticky injecters! I love this stuff Too bad its like 11 bucks a can up here
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Old Oct 24, 2008 | 09:33 PM
  #27  
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From: Ellensburg, WA
Hmmm

Is it bogging down? The more gas you give the worse it gets? Somehow in resetting it you may be too rich and flooding the combustion. You could try leaning it out with the TPS, but i would only consider that a bandaid.
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Old Oct 24, 2008 | 10:49 PM
  #28  
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From: Bakersfield, CA
Mine does it too (4cyl, 5spd). I think its normal. Could be a worn out dashpot though. I just ate Thanksgiving turkey dinner, so I'm not about to explain dashpot, google it.
Matt16, how did you get your Thanksgiving turkey in October? Is it because the damn department stores have the Christmas decor out already and you figured, "why not?"

By the way, my '88 jerks bad, and my '94 2wd did it too. I think it's pretty common for the 22RE with a 5 speed. I will try some of what I've learned on this thread.
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Old Oct 25, 2008 | 12:09 AM
  #29  
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From: Temecula Valley, CA
I was wondering the same thing... but those canadians... you never know.

and a perceived jerk during throttle transitions could be engine mounts, trans mount, slop in the driveline... lots of things.
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Old Oct 25, 2008 | 10:09 PM
  #30  
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From: Bakersfield, CA
Oh I get it now! Thanksgiving was like an international tour. Stopped in Canada in October, hit the New England colonies in November, short break in Vegas to see a Wayne Newton show and a little slot action, then off to Mexico on the way to South America.

BTW - I checked my drive line by twisting back and forth by hand. How much play is too much?
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