Transmission Noises at high speeds | Ford Explorer Forums

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Transmission Noises at high speeds

  • Thread starter Thread starter Mick Montgomery
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Mick Montgomery

1998 Ford Explorer 4 litre automatic in the UK.

Hoping that someone can point me in the right direction with this, as the Ford Dealer isn’t much help. When I am travelling fast on motorways, speeds around 70 mph, if I take my foot off the gas there is a noise (I think) from the transmission that sounds like a small cog spinning round very fast. If I put my foot on again, even slightly, it goes away. Its been like this for a while, just happening occasionally/intermittently, but recently its happening every time I go out on the motorway, but not during local driving, say speeds up to 50mph. A few weeks ago, I was in heavier traffic on the motorway and so was breaking a lot more and this time the noise remained right down to low speeds. After pulling off into the services, with the drive in Park, I was still rolling forward and reverse wouldn’t work. It was like some cog was not in the right place.

I got towed home, tried it the next day by driving forward and it somehow corrected itself, but I am back to the noise on the motorway.

The Ford dealer said the transmission fluid was low and topped it up but couldn’t recreate the problems I was having (and for some reason were reluctant to take it out on the motorway to try). I am wondering why the fluid level wasn’t checked at the last service that was very recent. I saw some other messages that indicated that problems with the regulator/loss of voltage or something like that could cause changes in gears.

Anyone got ant ideas?
 






Does it sound similar to a "hiss"? Like air escaping possibly?
 






Its more like a fan motor starting up but with a bit more clanking/mechanical noise
 






jason25.... you said something about air escaping... when i am driving my 96 4x4 auto around if i turn everything off and listen very very closely at cruising speeds 55+, if i tap the gas i hear a very faint "wisp" kind of like air escaping.... would you happen to know anything about this? your knowledge is appreciated, thanks
 






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