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900T Erratic Idle and stalls attempt to open throttle
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Posted by John P. (more from John P.) on Mon, 2 Jun 2025 12:58:41 Share Post by Email
In Reply to: Re: Throttle body switch, Bill S., Mon, 10 Dec 2012 17:01:09
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1993 900T with jumping idle when warmed up and when I open throttle it stalls. Has new NGK plugs, wires, cap and rotor. No sign of vacuum leak. Swapped out AIC and MAF with extra Bosch units no change. Set timing at 16 BTDC vacuum plugged. When engine is off key in off I near clicking from AIC valve-which is strange. It did same thing with the good used spare AIC I swapped out. Fuel pressure stays rock steady at 35 psi. I had fuel injectors rebuilt by reputable place. Has new fuel pump and Bosch fuel filter and I filled tank fresh 93 octane gas. Any ideas? Thanks.

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