c4

[1977 ZH 540]

today cruising up a hill in my zh it shifted into top gear then free reved now its only a 2sp oil level is fine i may of heard a clunk as it shifted. 

 

anyone have any ideas what it could be?

 

thanks in advance.

[Mr Polson 10,214]

You're good at breaking stuff haha

 

Which gear has it lost?

[1977 ZH 540]

You're good at breaking stuff haha

 

Which gear has it lost?

 

it was cruising not belting up the hill screaming its head off, trans has been iffy since i bought it.

 

its lost 3rd i had to do 60 all the way home to keep the revs down.

[gerg 10,871]

Blown piston seal on top gear? Stuck valve in valve body? Autos are never an easy fix so I'd take it to an auto place.

 

As the saying goes: if the job was easy, there wouldn't be a trade for it.

[Mr Polson 10,214]

Isn't something to do with the vacuum thing C4s have? (I think it's c4s that have that).

 

Judging by what I read on Google it could most likely be valve body related.

[1977 ZH 540]

Blown piston seal on top gear? Stuck valve in valve body? Autos are never an easy fix so I'd take it to an auto place.

 

As the saying goes: if the job was easy, there wouldn't be a trade for it.

 

ill have to call a few places see if they have a rough idea.

[revhead 1,392]

Blown piston seal on top gear? Stuck valve in valve body? Autos are never an easy fix so I'd take it to an auto place.

 

As the saying goes: if the job was easy, there wouldn't be a trade for it.

like ,^^^^^

 

ive been in the trade for 30yrs  and rebuilt my daughters auto in here e,series falcon,and i have to say ,never again,m

[gregaust 319]

They're easy lol .. Got reverse?

[1977 ZH 540]

They're easy lol .. Got reverse?

 

everything except 3rd

[gregaust 319]

Ok then, good vacuum at the modulator?

[1977 ZH 540]

Ok then, good vacuum at the modulator?

 

havent had time to look at it yet that will be the first thing ill check.