jz
Junior Member
'91 truck, downey t-bars, 33" dunlop mud rovers
Posts: 94
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Post by jz on Feb 13, 2006 18:22:25 GMT -5
so i did a fuel system cleaning on my 91 3.0L the other day at work and ever since my truck has been idling around 1000-1100 instead of 600 where it should be. any ideas?
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Post by nightwolf on Feb 13, 2006 18:49:11 GMT -5
Mine is doing the same thing cept I have the 2.4L 22RE. As far as I know it could be that the engine is running rich. Which is better than running lean of course but your gas mileage is a little worse. Other than that I'm not fully sure.
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Post by bowshtr on Feb 13, 2006 21:59:09 GMT -5
On your trottle body there is a small port on the inside by the venturie. Thats for your idle. It might be slightly clogged since you did the cleaning. Sometimes cleaning things like that can actually loosen debris and clog things up. What i would do is spray it down some and then turn your idle adjustment screw all the way down and then back up again and try and set your idle at your desired location. Remember to adjust your idle after you run your truck while hot at 2000 rpms for about a min or two. Otherwise you wont get a precise setting.
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Post by youryotasbitch on Feb 18, 2006 20:51:12 GMT -5
you know what mine is doing is some times it will hold a idle speed of like 2000 and the next time i stop it will be at 600 and most of the time it will just rev itself from 600 to like 1200 relly fast if anyone could give some input it would be apriciated
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Post by 94runnerj4 on Feb 22, 2006 20:40:20 GMT -5
I have a 94 4runner and it idles at 2,000 rpm and sometimes 2,500 rpm and it doesn't go down. I have read reviews and I cannot seem to find the idle screw, so if anyone has any info to help me turn my idle back down and find the idle screw I would appreciate it greatly!! thanks
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jz
Junior Member
'91 truck, downey t-bars, 33" dunlop mud rovers
Posts: 94
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Post by jz on Feb 23, 2006 22:24:36 GMT -5
so it sounds like alot of us have a similar problem, but no one really knows the answer cause the only answers we get are from people who have a 22re.
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Post by youryotasbitch on Feb 25, 2006 21:56:14 GMT -5
yeah thats gay but hey for the 94 runner guys who idles at 2 thousand the adjustment is on the efi near the bottom righ bye a lot of the hoses its a black screw that will adjust your up and down idle speed
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Post by cobra1204612046 on Mar 6, 2006 8:42:10 GMT -5
I got a 86 22R, and it won't stay idleing when cold, but when it is warm, it tries to idle, but it won't. Could it be the fuel pump?
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Post by irishmanforhire on Mar 6, 2006 11:54:57 GMT -5
what kind of cleaning did you do? in tank cleaner, injector cleaner kit, or just spray stuff into the throttle body... I'd first check all vacuum lines around the throttle body and intake plenum. A loose vacuum hose could cause a rise in rpm just from the extra air entering the engine. Also with the 3.0 liter, the throttle body is known for wearing out and the throttle blade will actually stick or not fully close at idle. Sometimes it could just be gummed up with goo also. if all of that seems to check out then i'd just find the screw on the throttle body and turn down the idle. The 22re has the same screw. it almost looks like a plug or cap but it has a slot in it for a flat blade screwdriver, all it does is adjust the amount of air going throught the idle air portion of the throttle body assembly. let me know what kind of fuel system cleaning you actually did.
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Post by cobra1204612046 on Mar 7, 2006 10:11:16 GMT -5
I have put isoprophanol alcohol in the gas, and that seemed to help a little, but it still isn't right. I was talking to the person i bought the truck from, and he said that he replaced the fuel pump, but when i looked at it, the lines were a little dry rotted, so i am going to replace the lines and see what happens then.
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Post by 94runnerj4 on May 9, 2006 12:53:26 GMT -5
I looked for the idle adjustment screw and I fell really stupid that i can't find it.....All the vaccum lines are ok and I have cleand the throttle body and venturie.... Someone thinks it may be the Mass Air Flow SEnsor but i heard my truck doesnt have one.... I really need to turn the idle down because its killing my gas. Please help me find this idle adjustment screw!!!
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Post by 94runnerj4 on Oct 26, 2006 13:38:01 GMT -5
I still can't seem to find the idle adjustment screw........ I had my truck in at a local mechanics shop and told them to diagnose the high idle and he told me that the venturie inside the throttle body was worn out and needs to be replaced. I then asked about the cost and he said that we would need to replace the whole intake manifold and it would be around $400 bucks. I told him that I could live with my high idle and left. To tell you the truth I dont believe that is the problem because he has diagnosed other problems on my truck that weren't the cause.
My Idle will be an average 2,000 rpm with a range that will occasionally go to 1,500 rpm and sometimes all the way up to 2,200 rpm. I have cleaned the throttle body and checked my vaccum lines and all checked out ok. This brings me to my question, "Could my high-idle be from some sort of sensor?".
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Post by bowshtr on Oct 26, 2006 15:32:11 GMT -5
When he said the venturie is worn out, it might have something to do with the TPS (throttle position sensor). The TPS is usually connected to the venture on the opposite side of the throttle cable. At one time i thought my TPS crapped out on me so the first thing i did was ran Sea Foam through some vac lines going into the throttle body. Lucky enough it stopped my problem. If my problem didnt go away i was going to re-adjust the TPS. If re-adjustment didnt cure the issue i was just goin to replace all vac lines and the TPS. Check out this link. It might help you out some. www.4crawler.com/4x4/CheapTricks/TPS/index.shtml |
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Post by 4xfred on Oct 26, 2006 18:22:30 GMT -5
;D All I can do is TRY to explain where the idle screw is on my '88 V6. Hopefully, it's in the same spot. If you look @ the throttle body from the front, where the intake tube hooks up, you should see a "raised" section. Almost like an enclosed pipe heading towards the upper plenum. At the end of that, where the TB bolts to the plenum, there should be a box looking section. Mine actually has 'Toyota' stamped in it. Right under that, facing the front of the motor, SHOULD be a slotted plug right @ the end of the TB. That''s the idle adl. screw. Hopefully, it's in the same place. Later...
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Post by 94runnerj4 on Dec 10, 2007 17:30:25 GMT -5
I finally found the idle screw today! I lowered my idle and boy does it sound better! thank you ALL SOOOO much!
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Post by Sean on Dec 10, 2007 17:45:47 GMT -5
I finally found the idle screw today! I lowered my idle and boy does it sound better! thank you ALL SOOOO much! Now go back to the shop and bitch out that hack calling himself a mechanic that couldnt figure that out for you. |
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Post by 94runnerj4 on Dec 11, 2007 18:45:47 GMT -5
I have a little problem... this morning I cranked my truck up and it was at 1500 rpm, so I thought maybe it was still warming up. So after work I cranked it up and it reved to 1500 rpm again so I let it warm up and it was still at 1500 rpm so I turned the idle screw all the way in and its at 1000 rpm. Do you think that having a gutted out cat would having anything to do with it? I think it may be a vaccum leak
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