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PLease HELP - F-150 won't go above 30 mph

 
  #16  
Old 07-11-2014, 01:17 PM
98GP
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OP,
Is your truck a 4x4? Is your transfer-case stuck in low range?
 
  #17  
Old 03-23-2017, 03:06 PM
James Stevens
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1997 F150 4.6 4x4

Originally Posted by 98GP View Post
OP,
Is your truck a 4x4? Is your transfer-case stuck in low range?
Hi I seen your post and had a couple questions my truck is a 1997 4.6 4x4 when I get up to 35-40 mph it kinda starts to hop lightly and the rpms raise but my speed won't... It seems to shift in all gears really fast?? The 4x4 light won't come on unless I switch it on and off a few times but it doesn't kick on underneath if I'm describing it right. I'm trying to figure out the problem. I just bought it a few months ago and haven't gotten far
 
  #18  
Old 06-04-2018, 11:37 PM
curiousv
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Question

Originally Posted by NCFireMedic315 View Post
If as you were driving your rpm's just kept rising but you were not going any faster, it sounds like a snap ring for your drive or over-drive gear. This would not allow for your transmission to shift into the next gear properly. Which in turn would not let you exceed the speed set for the transmission to shift. This is about a 1300-1600$ fix. Don't waste you time or money on a flush, but you could save a couple bucks and buy the gasket, fluid, and filter on your own instead of the shop charging you 21% over the sale price of these parts.
Hello, I have this problem. unless I disable OD by pushing OD button truck will not go over 40 mph.
I removed transmission pan and removed valve body and I found that snap ring on reverse was broken..and few pieces were in the grooves of valve body ( I dont remember where exactly they were) ..overdrive servo (snap ring) was not broken...
Do you think this broken reverse snap ring(servo) is the reason why ...it wont go pass 40 mph unless OD is disabled?
I replaced 1-2 and 2-3 accumulator and piston and that broken reverse snap ring but have not touched overdrive section.
Do you think I should remove overdrive snap ring and check if spring inside is ok?
 
  #19  
Old 06-05-2018, 01:01 PM
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Originally Posted by Deborrah View Post
Hello - My truck will not go above 30 mph - rpm's will rev high but, speed will not climb. I was able to put the truck in 2nd gear and drive home at @ 40 mph. Truck has 135K miles on it, I'm the original owner. If anyone has any ideas as to what this might be I would greatly appreciate any info before going the mechanic.
The first thing to do in that situation is to check the trans fluid which may be very low. You could have developed a leak in the trans cooling lines. If the fluid is not low, you probably should have it towed in. If the fluid is low, add trans fluid and have the fluid changed when you can, assuming it hasn't been done in 50,000 miles.
 
  #20  
Old 06-05-2018, 04:45 PM
curiousv
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Originally Posted by 1saxman View Post
The first thing to do in that situation is to check the trans fluid which may be very low. You could have developed a leak in the trans cooling lines. If the fluid is not low, you probably should have it towed in. If the fluid is low, add trans fluid and have the fluid changed when you can, assuming it hasn't been done in 50,000 miles.
Hello, I have this problem. unless I disable OD by pushing OD button truck will not go over 40 mph.
I removed transmission pan and removed valve body and I found that snap ring on reverse was broken..and few pieces were in the grooves of valve body ( I dont remember where exactly they were) ..overdrive servo (snap ring) was not broken...
Do you think this broken reverse snap ring(servo) is the reason why ...it wont go pass 40 mph unless OD is disabled?
I replaced 1-2 and 2-3 accumulator and piston and that broken reverse snap ring but have not touched overdrive section.
Do you think I should remove overdrive snap ring and check if spring inside is ok?
 
 
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