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Discussion Starter #1
Ok yeasterday evening I cleaned my throtle body in my 92 22re pickup. It runs great. The idle is even higher than before. No problem there I can adjust that.Ok here is the problem. With the truck idleing, the A/C compressor on and my foot on the break the idle speed fluctuates between 1100rpm(now normal idle rpm) and around 1400rpm(now idle with the A/C compressor on). If I take my foot off the break the engine will return to normal A/C compressor on idle rpm(now 1400rpm). The odd thing is it only does it when I push on the break. Other than that the truck is fine. The truck even seems to more responsive now. And it only does it when the A/C is on, at idle RPM and pushing on the break! Man that gets me. Please help! TIA
Wolfman <IMG SRC="smilies/crybaby2.gif" border="0"> <IMG SRC="smilies/crybaby2.gif" border="0"> <IMG SRC="smilies/crybaby2.gif" border="0">

[ 08-15-2001: Message edited by: the_wolfman ]
 

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Hehehe - this was discussed a while back. Mine did it for about 2 or 3 months. Search here and if you don't find anything go do a search at 4x4wire.com in their toyota forum.
 

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this is just a guess.
the brake circut talks to the ecu, and from what i have found it seems to me that when you get on the brake then engine speed drops.
so i would think that maybe your idle is just turned up too high right now and the computer is just compensating like it should regularly.
try turning the idle down slightly and try again.
 

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Discussion Starter #4
Brector, I could not find anything here or at 4x4wire.com about this problem! If you could tell me how you fixed it and what the problem was I would most appreciate it? <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0">
 

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Originally posted by SeaBass44:
<STRONG>
Originally posted by brector:
[qb]Hehehe - this was discussed a while back. Mine did it for about 2 or 3 months. Search here and if you don't find anything go do a search at 4x4wire.com in their toyota forum.</STRONG>
Whatever you do, just post something useless, don't tell him the answer

<IMG SRC="smilies/flipoff.gif" border="0"> <IMG SRC="smilies/rainbow.gif" border="0"> <IMG SRC="smilies/rolleyes.gif" border="0"> <IMG SRC="smilies/rolleyes.gif" border="0"> <IMG SRC="smilies/rolleyes.gif" border="0">[/QB]
I can't remember the solution - there were 2 they found. Mine went away so I didn't save the link. I was trying to help point him in the right direction. <IMG SRC="smilies/flipoff.gif" border="0">

Hell - I even searched myself to see if I could find the links. Go back to moderating.

[ 08-14-2001: Message edited by: brector ]
 

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Originally posted by the_wolfman:
<STRONG>Brector, I could not find anything here or at 4x4wire.com about this problem! If you could tell me how you fixed it and what the problem was I would most appreciate it? <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0"></STRONG>
Found it!

Here's the link: http://www.geocities.com/toyotashawn/bizzareidle.html
 

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The brake booster is vacuum actuated, it might be leaking when the brake is depressed. Causing a big vacuum leak. Try pinching or blocking off the vacuum source to the booster to see if the problem goes away. Good luck. <IMG SRC="smilies/idea.gif" border="0">
 

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Discussion Starter #8
I am going to adjust the idle screw and bring my idle lower because it is too high and maybe that will fix it. If it doesn't I will let you guys know eather way tomarrow. Thanks for your help.
Wolfman <IMG SRC="smilies/smile.gif" border="0">

[ 08-14-2001: Message edited by: the_wolfman ]
 

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Definety isolate the concern, you know it happens with the brake pedal depressed. Do like kong said and remove the vac buster lin plug it and see if it goes away when the pedal is pressed. if not the try removing the brake sitch wires and try again. Whichever one removed fixes it, chase down a vacumm leak if it was the booster, or if is was wiring check for shorts,opens,voltage feeds.
HTH
 

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I had something similar to this happen....Turned out to be the fuel cut gizmo....Apparently when the RPM is high, but throttle is shut, fuel is shut off from injectors until RPM drops to normal idle, then fuel resumes, RPM goes up, and so on. Short version, Just adjust your idle, bet it resolves itself. <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce2.gif" border="0">
 

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Originally posted by SeaBass44:
<STRONG>
It sounded like you knew, cause you told him to do a serch, didn't mean to be so bitchy <IMG SRC="smilies/biggrin.gif" border="0"> it must be that time of the month 4ME <IMG SRC="smilies/biggrin.gif" border="0"> BaHaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</STRONG>
It's all good - I'm feeling emotional too <IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0">
 

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Discussion Starter #13
Got it fixed!!! I had too adjust the idle cause it was too high(1100rpm). I brought it back down to where it is supose to be(750rpm). Just to see if it did anything I turned the A/C on and hit the break. It fixed the problem! Thanks for all your help!!
Wolfman <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce.gif" border="0">
 
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