I have a 1989 Ford F250 that doesn't shift into high.

Asked by Feb 14, 2015 at 05:59 PM about the 1989 Ford F-250 XLT Lariat Extended Cab LB

Question type: Maintenance & Repair

1989 Ford F250 wont shift into high.

9 Answers


Need more info Auto trans??? The bands are adjustable and theres other concerns as well Vacum to the trans and possible Modulator problems, but first when was the filter changed ???

It is an automatic "sorry"hahaha it was my dad's I have only had it sense October and never had it on fwy till last week. I went 109 miles and used 18 gal. Of Gass never went over 55.


Wow! 109 miles on 18 gallons of gas! 6mpg... Thats less than what I get on my 65 Thunderbird 390 with 350 hp and I thought that 7 mpg was bad.


I'd change the filter and fresh Dexron Mercon Atf


Getting serious; you didn't say how many miles are on this truck but I would guess an 89' would have about 250k at 10k per year. That estimate is based on being driven every year. Also, you don't say if you have a 3 or 4 speed trans, if your truck is 2 or 4 wheel drive and if it is a 5.0 or 5.8 V8. With my crystal ball having fallen off the shelf awhile back, I am picking 2 wheel drive, 3-sp 5.8 CI. Accorrding to EPA it was rated at 10 city, 12 Hwy. If it wouldn't go into high and fluid is new and the correct type and the filter is clean then you either have a vacuum leak to the modulator valve, bad valve, loose or burned bands or a combination of any of them.

1 of 1 people found this helpful.

Thanks old timer I will give your answers a try and you must have found your ball all you guesses were on the money.


Keep me posted... thanks

Hey old timer where is the darn PCV valve on this motor it is the 7.8 I think the biggest one ford made this year. My dad said he has never changed it I think this might help with gas mileage issue.


I am not sure on the 7.8 but usually they are either on the valve cover, possibly in the air cleaner or on a hose going to it.

1 of 1 people found this helpful.

Your Answer


Looking for a Used F-250 in your area?

CarGurus has 472 nationwide F-250 listings starting at $2,550.


Ford F-250 Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Ford F-150
2,565 Great Deals out of 195,336 listings starting at $1,300
Used Ford F-350
294 listings starting at $6,949
Used GMC Sierra 1500
996 Great Deals out of 66,239 listings starting at $2,495
Used Ford Mustang
585 Great Deals out of 36,203 listings starting at $1,200
Used GMC Sierra 2500
4 Great Deals out of 155 listings starting at $2,995

Used Cars For Sale

1999 Ford F-250 For Sale
23 listings starting at $2,550

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.