Surf 3lt automatic- Gearbox problem

[bobbrown]

Hello, im looking for some advice please! I have a 1995 Surf 3lt Automatic and am having problems with it going into overdrive, occasionally it goes in. If i come up to a round about and stop and try to move off, theres loads of revs and no forward movement, so now i set off in low, 10mph then push it into drive. Any help or advice gratefully recieved.
Bob

[europa88]

Check ATF levels first when oil hot, leaving the engine running and cycle through the gears before checking.

[bobbrown]

Thankyou very much, have already done that, anymore suggestions please?!
Bob

[europa88]

Does the o/d warning light flash on and off at all?

Maybe try and find if the ECU is showing a fault code.

[TonyN]

If you have a body lift, check its selecting properly.

After you've checked all the levels, crawl under the truck and look at the gearbox, on the passenger side, 1/2 way back ( kind of above where the dipstick tube enters the sump ), you should find a black 3 wire plug, this is the shift control loom, unplug it and then try the truck, you have to select all the gears manually, you will have L, 2nd and O/D gears. (3rd is only electric selecting) and reverse.

This will prove the gearbox and selector are mechanically sound and its an ECU/solonoid problem.

If its a solonoid problem, then you should get a fault code when you do the diagnostics codes and press the O/D button and count the flashes of the O/D light.

If codes are clear, its probably the ECU itself.

[bobbrown]

Many thanks for the suggestions, I will go and try them now! Fingers crossed!
Nice horse Tony, we have one like that, but ours is built like a tank!! :-)
Bob