Brass shift rings causing clunk when accel.

[04merc]

I was told the other day by a Mercury tech that the reason there is a clunk noise whenever I coast the car and then give it gas it clunks, when I accel and then let off, it clunks.

I was told that its because of the "Brass Shift Rings" and that this is a known problem....

Is there such thing in the 4r70w trans?

[Blackened300a]

Not sure about the brass rings but that sounds more like a bad universal joint.

[Local Boy]

^^^+1^^^

Bad U-Joint

ALOHA

[Bigdogjim]

Sure sounds like U-joint to me?

[FordNut]

...or ring & pinion backlash.

[RoyLPita]

Shifter blocking rings are made of brass and are only in manual transmissions. Hope this helps a little.

[69marquis conv]

Maybe there's excessive backlash in the rear differential?

[ckadiddle]

I hear the klunks too!
















But it's only my brain rolling back and forth inside my head.

[Krytin]

Sounds like it's time for a new service tech!!

[SC Cheesehead]

Sure sounds like U-joint to me?

+3

That would be the first thing I'd check.

[Aren Jay]

.............................. .....

[04merc]

Shifter blocking rings are made of brass and are only in manual transmissions. Hope this helps a little.


Thats what I thought as well, U joints are brand new, and installed correctly as well as the driveshaft was indexed. The rear is perfect, the clunk sounds like coming from trans...

[justbob]

I have the same sound and it has always been there, on mine it is just the backlash.

[RF Overlord]

Sounds like it's time for a new service tech!!Agreed.

Also check the transmission crossmember bolts and the rubber mount.

[04merc]

Now the car is taking forever to go into reverse. or forward gear..


Like shifting from reverse to drive, it sits there can count till 5 till it engages.

its the same going into reverse.

is this a trait of the infamous 4r70w?

[FordNut]

Now the car is taking forever to go into reverse. or forward gear..


Like shifting from reverse to drive, it sits there can count till 5 till it engages.

its the same going into reverse.

is this a trait of the infamous 4r70w?

I believe it is a trait of a 4r70w that is about to lay down on you.

[ckadiddle]

I believe it is a trait of a 4r70w that is about to lay down on you.
Sick torque converter mebbe? :eek:

[Krytin]

Clogged filter, low fluid, blocked passages, leaking actuator pistons or bad pump.
Combinations of any of the above - it's not normal.

[04merc]

I figured it wasn't normal due to the fact that it never did this when it was new....

then again, it was rear ended by a dump truck at 1800 when I owned it.

so could have mess somthing in the rear being forced foward, towards the trans... ?

I mean I can rebuild it, I have no problem with auto transmissions done em before. especially the 4r70w...

can I just get one out of a police version crown vic? I'm just gonna rebuild it anyway...

[FordNut]

I believe it has to be from a Marauder or CVPI. The regular CV has a shorter tailshaft & housing.

[04merc]

cvpi? is that the intercepter package?

[FordNut]

Yes........

[04merc]

So where can I get 1, and a rebuild kit?>

[tjg442]

now the car is taking forever to go into reverse. Or forward gear..


Like shifting from reverse to drive, it sits there can count till 5 till it engages.

Its the same going into reverse.

Is this a trait of the infamous 4r70w?

told by people when looking for my mm, try to get an 04, that they had a different trans, up-graded from the 03's.
one of the problems, was a clunk in the trans ! Of the 03's ?
at 80000, i had my 04 trans rebuilt, and new pump and plates
installed. "there is a different pump for the 04's" we found out when the parts came in, and had too wait for the newer pump...could be your problem ! Mind you, i said "could be".....hope this helps !!!

[04merc]

told by people when looking for my mm, try to get an 04, that they had a different trans, up-graded from the 03's.
one of the problems, was a clunk in the trans ! Of the 03's ?
at 80000, i had my 04 trans rebuilt, and new pump and plates
installed. "there is a different pump for the 04's" we found out when the parts came in, and had too wait for the newer pump...could be your problem ! Mind you, i said "could be".....hope this helps !!!


so wait a sec, the trans varied by year? but if the 04 was upgraded from 03, whatever they did for the "upgrade" was pointless if it was to eliminate the clunk.