EGR and second gear
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Joined: Oct 2003
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EGR and second gear
1983 ford F150 351W auto,.... (FOR FARM USE ONLY) Large farm.
I am trying to get second gear to fuction after a engine remove and replace. Tranny works fine, it just bypasses second. I think the elimination of the egr is the culprit? The egr was purposely blocked.
Does it not contain the vacuam feed for the modulator on transmission?
If I am on right track how do I feed the modulater without hooking up the egr? Gordo
I am trying to get second gear to fuction after a engine remove and replace. Tranny works fine, it just bypasses second. I think the elimination of the egr is the culprit? The egr was purposely blocked.
Does it not contain the vacuam feed for the modulator on transmission?
If I am on right track how do I feed the modulater without hooking up the egr? Gordo
Posting Guru
Joined: Sep 2003
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From: Right Next to U
The modulator needs vaccum, seems without it, it will now shift. so take the vaccum someplace near the carb. on a tee or if you have it, just use a vaccum from the mantifold under the carb. it would work better if you could just get another EGR from the same model/engine as yours from the junk yard. it would just work better...
Tuned
Joined: May 2003
Posts: 345
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From: Southern IL
Vacuum for the modulator should come from a (tree) on the back of the intake. One big one to the brake booster, couple small ones, one to the modulator, one to other vacuum supplies like AC/Heater switches etc.
Anywho, with no vacuum supplied to modulator, otherwords all source to it plugged, from a standstill the truck should still shift through the gears, to my understanding that is. No vacuum will cause no downshifts for sure.
Anywho, with no vacuum supplied to modulator, otherwords all source to it plugged, from a standstill the truck should still shift through the gears, to my understanding that is. No vacuum will cause no downshifts for sure.
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No Vacuam yet
Have been too busy so I have not hooked up vacuam yet.
Still a two speed. I would think that the two posters who say I need vacuam to get second gear could be , or are right. Still unsolved though, but will get hooked up by tuesday next. Gordo
Still a two speed. I would think that the two posters who say I need vacuam to get second gear could be , or are right. Still unsolved though, but will get hooked up by tuesday next. Gordo
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Joined: Nov 2004
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From: Asheville, NC
quicker shifter
My F-150 with the 351W and C6 shifted thru the entire drive range before it hit 5mph on the speedo. It was a bad modulator causing it all. In your case, just connect the vaccuum to a good source on the manifold. It should cure all the problems that you are having.
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