98 Explorer - Transmission Issue When Warm/Hot


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98 Explorer - Transmission Issue When Warm/Hot

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Auto Repair Home>> Automotive Repair>> Transmission Problems

buckomccane66
New User

May 1, 2019, 12:32 PM

Post #1 of 4 (1734 views)

98 Explorer - Transmission Issue When Warm/Hot	Sign In

1998 Ford Explorer Sport 2WD
4.0 L OHV EFI
~140K mi

Summary: runs fine while cold; when engine warms up transmission makes rattling diesel-like sound; engine shuts off and can't restart until cooldown

Details: coolant was not being taken up from reservoir. Replaced thermostat and radiator cap. Upon return from ~6 mile test drive transmission made rattling sound and shut engine down and wouldn't restart until cooldown. When hot restart is attempted engine is straining the starter.
It always goes into gears (R & D) and is always motile until the engine shuts off.
I replaced the filter (because I replaced the fluid). When I dropped the pan there was a fair amount of fluid that drained. When I added the new fluid a good amount leaked out seemingly from the top/front. The filter replacement/refill had no effect on behavior/performance.

One mechanic said I need a new/rebuilt transmission. I'm pretty knowledgeable about engines, but not so much with transmissions. If an outright replacement is necessary so be it, but I feel like it's some electrical/electronic component or clogged cooling line that is causing the problem.

gsferraro
Veteran

May 1, 2019, 5:10 PM

Post #2 of 4 (1718 views)

Re: 98 Explorer - Transmission Issue When Warm/Hot	Sign In

When you say you can't restart, what happens? does it crank with no start or you get nothing when you turn the key? Gary

buckomccane66
New User

May 1, 2019, 6:25 PM

Post #3 of 4 (1711 views)

Re: 98 Explorer - Transmission Issue When Warm/Hot	Sign In

It strains - similar to when the battery is weak. I don't keep cranking it so technically it might start if I kept trying.

gsferraro
Veteran

May 2, 2019, 5:17 PM

Post #4 of 4 (1668 views)

Re: 98 Explorer - Transmission Issue When Warm/Hot	Sign In

Doesn't really sound like a transmission problem, sounds more like a crank sensor problem. A transmission can make a car stall when coming to a stop but if put in neutral or park it will start right back up again. Gary

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