Volvo Owners Club Forum - Wastegate Arm Tightening?

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- - Wastegate Arm Tightening? (https://www.volvoforums.org.uk/showthread.php?t=73681)

Wastegate Arm Tightening?

Quote:

Originally Posted by t4 paul (Post 256871)

1. got an annoying rattle when you lift off the accelerator, had a look round and most likely thing is the wastegate arm, is this easy to tighten up cant seem to find it in my haynes book.

Quote:

Originally Posted by Rooster (Post 256936)

1, yeah sounds like wastegate arm to me chattering when you lift off throttle, yeah it can be tighten up abit to stop it, altho not to much,

Quote:

Originally Posted by Andy P (Post 257066)

1. Sounds like the wastegate arm to me - quite a common problem. Just lean over the back of the engine, take off the top heatshield and you will see the wastegate. Slacken the lock nut on the arm, pull out the split pin, pop off the arm. Now twist the end of arm clockwise to tighten - go one thread at a time. Reverse the instructions. Oh, its a good idea to let the turbo cool down before you touch it!

I have the said problem, will tightening the arm actually stop the rattling or just up the boost?

I have found the following as a good guide:
http://s40concepts.net/forum/index.p...8600f44828f309

but don't want to mess around with the boost...

help

Try half a revolution...should be enough to get rid of the rattle. Also try not to move the shaft too much when lifting as there's a chance of damaging the actuator diaphram.

I suppose it would be no harm to have the boost measured if you can lay your hands on a guage.

I have no experience with fettling with turbo cars

Naturally aspirated for the win

Any tips on measuring boost?

You may find that it is just the pin has snapped also...this can cause the same rattle when lifting off :)

The retaining pin?

That hasn't snapped, it's just loose

The rattle is the wastegate vibrating/chattering due to wear and by tightening the actuator arm you are taking up the slack. As above, just half a turn (clockwise) should be sufficient and be sure to hold the actuator arm with a mole/vice grips.

Quote:

Originally Posted by Gareth83 (Post 513389)

The retaining pin?

That hasn't snapped, it's just loose

A loose D-pin?
Not entirely sure how you can have a loose d-pin....it slots into the linkage and pins the 2 halves...I suppose it might be damaged....either way try what baffler says :)

I thought I'd run into trouble doing this as the nut looked pretty rusty.

Nothing a bit of trusty WD40 couldn't sort, soaked it last night and undone it this morning.

One full turn clockwise and the rattling has now stopped. Wish I knew about this fix a while back! I always thought it was a loose heat shield or something.

Took it for a quick spin and not sure if it was the placebo effect or the fact that I've been driving round in a 1.2 Clio but I have no idea why I am selling the said car. Performance is phenomenal with safety to boot!

lol welcome back to owning a fully working turbo car :D
Glad you got it sorted

Quote:

Originally Posted by Enigma666 (Post 513540)

lol welcome back to owning a fully working turbo car :D
Glad you got it sorted

save for my ABS problem

I still like my NA cars though, I love the way my mk1 16v just revs and revs and revs