Plz help 4th gear auto wont work

[mahooody]

i have a vs v6 automatic and it wont change into 4th gear before it stopped completely it would go in but change down to 3rd after driving for a while. is it likely to be the shift solarnoid or something else

thanks

 

[mahooody]

i hope it is just solarnoid cos i dont want to have to rebuild

 

[lgnd3800]

My Vr when it was auto was like that, sometimes it would go into 4th and not change down to 3rd, then it got to the stage it wouldnt go into 4th either and stayed like that, the guy that bought my Auto has had no prob so it could be a faulty wire in the loom

 

[mahooody]

wha would the best way about goin about checking the loom

 

[AttaBoy]

Go under the car and you'll see a bunch of wires on the passenger side of the trans. Make sure they are all connected and tight.

But I doubt its the problem. More likely the shift solenoid. Try giving it a service.

 

[mahooody]

i have the service kit and was gunna do it this weekend, i will check the solanoids when the pan is off. are they easy to get to when the pan is off and how many ohms should they be?

Cheers

 

[hako]

Do a code test and see what it says. For the resistance of the solenoids you'll need to search the web for 4L60E....though from what I've heard they usually jam or stick which a resistance check won't pick up.

 

[mahooody]

so should i just replace it and see how it goes

 

[hako]

The shift solenoid can be prevented from working for many reasons - jamming, sticking, wires not making contact, internal shorting, VSS not working etc etc. By just replacing it you cannot be sure that it will work as its at the end of a chain of command. I'd do a service - oil and filter - see how that goes. Also do a GOOGLE search for 4L60E - there are millions of these units around.

 

[mahooody]

i gave my tranny a good service and cleaned a layer of sludge from the bottom of the pan, it runs better now but still 4th gear wont engage. so i think i should change the solarnoid next weekend when i have time what do people think.

Thanks