RE: ToySUV: '89 4Runner hesitation...

["Barry N. Payne" <nadawgy118@xxxxxxxxxxx>]

Good idea on the allen bolts. I'll go through the motions in the manual and 
see how it goes. Thanks,
Barry N Payne "McGyver"
Brea, CA USA

>From: Ed Wong <ewong_kaizen@yahoo.com>
>Reply-To: ToyotaSUV@4x4Wire.com
>To: Toy 4x4 - MOAB <toy4x4@moab.off-road.com>,        SUV Toyota 
><ToyotaSUV@4x4Wire.com>
>CC: "Barry N. Payne" <nadawgy118@hotmail.com>
>Subject: RE: ToySUV: '89 4Runner hesitation...
>Date: Tue, 1 May 2001 13:39:42 -0700 (PDT)
>
>I presume its a 22RE.
>
>Just becuase the TPS is new, does not mean its
>adjusted correctly.
>
>The job is simple but tedius and maddening with only
>two hands.
>Replace the philips head screws/bolts with metric
>allen head bolts and use a "ball end" allen wrench.
>Makes off angle tighening a cinch.
>
>See the shop manual for the procedure.
>
>Assuming the cap wire rotors etc are not a fault,
>check the timing at idle and at rpm as per the shop
>manual. You'll need to make a "jumper" to short the
>check connector.
>
>If the engine has high mileage - its possible that the
>AFM is out of adjustment - however, it typicall runs
>RICH, not lean (tension loosesn with time)- adjusting
>the AFM might help here. This job is NOT documented in
>the shop manual. Check an LC engineering catalog or a
>Downey catalog.
>Bear in mind that the later ("straight" throttle body)
>EFI, AFAIK are backwards compared to the instructions
>that I have seen from Downey, LC. Use of the Vf signal
>is crucial for proper adjustment here.
>
>But if it were my guess - timing is off..
>Get a dial back to zero light - its a fun toy to play
>with when doing the timing...
>
>EWong
>
>
>-------------
>I recently accuired an '89 4Runner 4 cylinder EFI. It
>has a slight
>hesitation at all speeds almost like it's running
>lean. It has a new TPS,
>plugs / wires / cap / rotor... Has anyone experienced
>this and do you have
>any suggestions?Barry N Payne "McGyver"Brea, CA USA
>
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