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High Idle Screw

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High Idle Screw

Postby Begle1 » Mon Jul 16, 2007 8:39 am

So could somebody tell me what the high idle screw is good for? Why don't I just take it out?
1990 D-250 Regular Cab: Tweaked injection pump, built transmission, a cataclysmic charlie foxtrot of electronics, the most intense street-ran water injection system in the country, and some more unique stuff.
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Postby Ace » Mon Jul 16, 2007 9:37 am

Prevent internal pump damage when the throttle gets jammed wide open? Just a WAG...
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Postby PToombs » Mon Jul 16, 2007 4:18 pm

Take it out! Mine is in there, but it don't do nuttin! :wink:
pete

Just enough power to break everything behind the crankshaft.
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Postby CAJUN 93 » Tue Jul 17, 2007 5:45 am

mine keeps the idle screw in my glovebox company :lol:

daryl
93 d350 5spd 3.54-bhaf,stg iv,banks intercooler,bosch185,16cm,pacbrake,4" straight exh,pump mods,366 spring,leece-neville alt.
hers- 93 d250 auto 3.54- pump mods only
ours- 93 w350 dually, auto, 3.54. stock for now
parts 93 d350 auto, 92 d250 auto.
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Postby Begle1 » Tue Jul 17, 2007 7:56 am

So what does taking it out do? Let me go through higher RPMs?

If my old governor spring defueled at 2500, the pedal to the floor would get me to 3000 in under a minute. The new governor spring lets things go to 3000 faster, but I have to pull teeth to get it to 3200...
1990 D-250 Regular Cab: Tweaked injection pump, built transmission, a cataclysmic charlie foxtrot of electronics, the most intense street-ran water injection system in the country, and some more unique stuff.
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Begle1
14mm rotor
 
Posts: 1964
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Location: Kihei, Maui, Hawaii
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Postby CAJUN 93 » Tue Jul 17, 2007 10:48 am

the high idle screw does nothing except mechanicaly limit the linkage travel. it wont increase or decrease the output of the pump other than to limit how far into it you can put your foot. the idle screw does the same thing on the other end of the spectrum.

daryl
93 d350 5spd 3.54-bhaf,stg iv,banks intercooler,bosch185,16cm,pacbrake,4" straight exh,pump mods,366 spring,leece-neville alt.
hers- 93 d250 auto 3.54- pump mods only
ours- 93 w350 dually, auto, 3.54. stock for now
parts 93 d350 auto, 92 d250 auto.
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CAJUN 93
14mm rotor
 
Posts: 545
Joined: Tue Jan 09, 2007 9:53 am
Location: southeast luziana
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