please help!, 90 carburated wont idle and dies - Toyota Nation Forum : Toyota Car and Truck Forums


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Old 05-30-2006, 11:55 PM   #1 (permalink)
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please help!, 90 carburated wont idle and dies

Alright it is a 90' pickup carburated 4 cyl 22r, what it does is start up and run extremely rough, sounds like 3 cylinders are going (like maybe a fouled plug), what it will do is start run at fairly high rpm for maybe 3-4 seconds (could be choke) then drop down and die unless I give it gas, I have to continually pump the gas to keep it running and when I do give it gas the way it feels is like the engine is spinning really fast, like a winding sound if that makes any sense, I have tried to keep it running to warm it up and see what that does but nothing changes.

at the times leading up to this: it started doing this when I let my roomate move my pickup in the morning after it had not been started in a couple of days and he rodded on it w/o any warm up, I went out there later in the day and it would not idle correctly, I changed the cap and rotor, spark plugs, ingition coil and mount

if it means anything the engine in it right now is a motor swap that was never correctly timed (drivable but jerked through some rpms) and it fouled plugs regularly when I got on it

let me know if you have any ideas, I need to get this thing fixed or sell it for parts quick, thanks
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Old 05-31-2006, 11:47 AM   #2 (permalink)
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common, this is driving me insane with all the changing and replacing with nothing getting fixed
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Old 05-31-2006, 12:18 PM   #3 (permalink)
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Take out the idle fuel shutoff solenoid, use a set of sidecutters and clip off the tip (about 1/4 inch) and put it back in.
It's a common problem that the solenoid dies and the part is no longer available from anyone.

When it goes bad it kills the idle circuit completely.
It's only purpose is to prevent dieseling or run-on if the idle is set too high.
If you keep the idle correctly adjusted you will have no negative issues from it being disabled in this fashion.
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Old 05-31-2006, 03:41 PM   #4 (permalink)
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where is this located? I have a repair manual book but could not find anything about it
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Old 05-31-2006, 04:45 PM   #5 (permalink)
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if you are referring to the solenoid unit associated with the starter than this could make some sense because about 6 months ago this same sort of problem was happening where it wouldnt idle, the starter failed while messing with it for awhile (starting it and seeing what happens etc), I replaced the starter and it went back to completely normal, I just went on from there until this...SO it could have been that while changing the starter I knocked it "loose" a bit and got it going temporarily until this now...
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Old 05-31-2006, 05:06 PM   #6 (permalink)
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just read a similar post and one guy had a similar problem and he said something that mine is in fact doing also, using the fuel in the carb (why when it start it will run normal for 4-5 seconds) then after that die down and out or putter real bad, he said something, like the guy above about some computer idle chip thing and to check the contacts, or a fuel pump problem, any ideas
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Old 05-31-2006, 06:14 PM   #7 (permalink)
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There are 2 wires going into the idle solenoid, it unscrews with either a 12mm or a 14mm wrench.
It *should* be just above the throttle linkage and you can see it easier from the drivers side of the carb.
Look at the choke coil from the drivers side....just under it.....
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Old 06-02-2006, 08:29 AM   #8 (permalink)
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I had the same problem and replaced the emission control box on the right side kick panel.. Its a little gray box.. It solved all of my problems..
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Old 06-05-2006, 04:18 PM   #9 (permalink)
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where is this little gray box???? was your carborated?
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Old 06-06-2006, 02:41 PM   #10 (permalink)
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It's not the wires of the idle fuel cut solenoid you cut....it's the brass tip that is inside the carb (you must unscrew it from the carb).
Obviously do not harm the threads, remove the pintle tip and screw it back into the carb.
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Old 06-07-2006, 01:15 PM   #11 (permalink)
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so I cut the tip off, everything but the threads and I am getting the same symptoms... any ideas
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