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PostPosted: Wed Jul 25, 2007 6:43 pm 
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Location: Deming N.M.
theres one on my 80 4x4, i dont know what it does, and im trying to get rid of all the stupid wires and vacuum hoses under the hood and underneath the dash. Do i need it for some reason? Im beginning to think my truck is a California model, cuz it had a bunch of extra vacuum hoses, smog stuff, and a catalytic converter. Im putting the rebuilt engine in as soon as Mokadeth gets the manifolds from offy, and as soon as i get my butt in gear :lol: and put it together. I dont need all the extra weight and headaches that come with reattaching all of that mess! Oh, and can anyone tell me what else can go, as far as emmissions b.s.? thanks for yer time!

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PostPosted: Wed Jul 25, 2007 10:31 pm 
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Normally an engine speed sensor is used to measure engine speed (duh...lol)for electronic ignition, cruise control, etc.

A lot of fuel injected or computerized vehicles have them along with the coolant temp sensor, air intake flow sensor, vehicle speed sensor, fuel pressure regulater, and the throttle position sensor for emissions and to regulate timing, fuel/air mixture, etc.

All it does is measure your engine's rpm's.....and you might want to check your manual for what it's used for on your truck.


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PostPosted: Wed Jul 25, 2007 10:47 pm 
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Location: Brownwood Tx
Hmm....
I know my 79 4x doesn't have this, but does yours have the "dummy light" shift indicator?

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PostPosted: Thu Jul 26, 2007 10:36 am 
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umm... i dont know ive never drove it, but it doesnt have cruise control, and its not a fuelie, my 79 2x4 doesnt have one, none of the other three have it, just my 80 4x4. oh taz, i guess i had a brain fart lol! :oops:

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PostPosted: Thu Jul 26, 2007 3:26 pm 
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If I remember correctly--the speed sensor allows the coasting richer solenoid to to open and let in a small amount fuel if---the engine speed is 2000 rpm or above, and it is in 3rd or 4th gear, and the throttle is closed (coasting). It supposed to help with emissions and eliminate backfire while coasting.


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PostPosted: Thu Jul 26, 2007 3:31 pm 
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so, in other words i dont need it, since ill be using a weber of some sort?
(PLEASE say i dont need it i HATE wiring! :lol: )

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PostPosted: Thu Jul 26, 2007 4:05 pm 
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Nope... don't need it with a Weber

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PostPosted: Thu Jul 26, 2007 4:12 pm 
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:D YAY :D Im so happy, thanks 79 LUV'r!

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