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the lines could be cracked, or split, the tps could need to be calibrated, you could just have 200k on the engine...... what is the compression like? maybe you adjusted the timing? what about valve clearances?and the 22re uses a timing chain, not a belt
you may have not moved anyhting intentionally, but even vibration is enough to split old, brittle rubber tubing.....
what spark plugs are you using?
02 sensor..... has the computer been reset? sometimes they dont like all sorts of stuff being done at once, as the vehicle needs to relearn.....
Did you gap the plugs properly, are they the same plugs or are they hotter or colder plugs? Also are the plug wires the same mm as the old ones. These little things can change the way your truck runs.
See if it does it when you unplug the TPS. It should default to a higher idle. If the syptom is gone at that time chances are a recalibration is needed. As it is adjusted it is condidering all other conditions, if conditions change then it is possible it is not relating well with the rest of the engine. Smell your exhaust too, just because an O2 sensor is new and OEM doesn't mean it's good, could be bias lean and too rich to run smooth at idle. spray water on all vaccuum lines while doing it, will determine vaccum leak, if old and weak when you touch them is when they break. something simple will be the cause, mine missed like crazy after replacing my TPS, simply a dirty pin on harness at the sensor.
this is a prime example of why you shouldnt fix what isnt broken its obvious the problem lies in a vacuum line as you have to move a few vacuum lines to change the plug wires. namely the pwr steering pump vacuum lines.
Gonna check the TPS today. As far as the 02 sensor, I didn't think it regulated idle, only when under throttle.
did you save everything you replaced? If so back one at a time.
I am just saying new parts are not always good, even toyota, maybe just replace with other parts, just brainstorming possibilities.
Ok, I spent last night scouring the interwebs and going through the FSM and I found something that may be an issue. I've looked at a couple of pics of 22re's to compare to mine and all of them have this sensor on the valve cover......the problem is that mine doesn't. What is this and what does it do? For reference my rig has a build date of 11/84 (1985 model year) and is a california model.
I yank all that vacuum crap off other than the a/c idle up on all the rigs I work on and I have yet to have a rig not run better when done. So making sure all that crap is at least on correctly will certainly help.
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