My transmission went out replaced it and the new on started jumping in high gears in forward and reverse

10

Asked by Apr 25, 2013 at 09:45 PM about the 1990 Ford F-150 S SB

Question type: Maintenance & Repair

Also timing going in and out have to
prime it up on a cold start bought a
new transmission it's doing the same
thing changed timing chain main
computer distributor ignition module
neutral drive switch ABS sensor

10 Answers

rumor has it that it could be your vacuum modulator, or vacuum to the vacuum modulator...I always suggest silicone vacuum lines like one may find on a BMW or from summit racing or performance shops, seen a length of the flesh colored stuff for nine bucks from gates rubber~ This is the damned thing that makes it switch gears on time, better scoot down there and check it's operation~

1 out of 1 people think this is helpful.
10

It don't have any vacuum lines that go to it though it's a E4OD all electric

1 out of 1 people think this is helpful.

hmmm, is it doin' it's job there alright, or got to send in a replacement module?

I'm sorry our vacuum modulator doesn't have vacuum lines---pity that~

780

does your truck have a computer for the trans?

10

It has a shift solenoid in the transmission but it's new

780

not for nothing how about the throttle position sensor?

I'm so confused, the accelerator position sensor equates to the throttle position sensor according to FORD~ here's a dandy cartoon of the motor showing the tps, for what good it's doing us~

780

go into auto zones website look up the throttle position sensor here in rhode island thier 40 somthing dollars. but click on it and it will tell you that it can screw up the shift points. would have a lot to do with starting and idel plus lack of power. i have an 85 with a 4.9 but this truck came through with 2 diffrent tps. one you just install, the other needs an ohm meter to set in the right position. yours i have no idea good luck paul

test it and see if it's bein' a bad boy (leakin' to ground, erratic output) if screwed up...replace~ not sure how the computer takes the reading from this human-meets computer troublesome device~

Your Answer

Add photo

Related Questions

F-150

Looking for a Used F-150 in your area?

CarGurus has 210,250 nationwide F-150 listings starting at $895.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 7,220
#2 dandyoun
dandyoun
Reputation 4,260
#3 tennisshoes
tennisshoes
Reputation 2,590
View All

Related Models For Sale

Used GMC Sierra 1500
892 Great Deals out of 64,400 listings starting at $1,500
Used Ford Mustang
333 Great Deals out of 45,576 listings starting at $2,000
Used Ford F-250
480 listings starting at $3,975
Used Ford Explorer
748 Great Deals out of 74,481 listings starting at $750
Used Ford Ranger
179 Great Deals out of 6,179 listings starting at $1,300

Used Cars For Sale

2017 Ford F-150 For Sale
4 Great Deals out of 118,244 listings starting at $18,165
2016 Ford F-150 For Sale
145 Great Deals out of 28,913 listings starting at $17,877
2015 Ford F-150 For Sale
182 Great Deals out of 7,238 listings starting at $11,600
2014 Ford F-150 For Sale
424 Great Deals out of 12,210 listings starting at $9,995