No Boost - Help!!

john-e89
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No Boost - Help!!

Post by john-e89 » Sat May 05, 2018 6:19 pm

Smartbear wrote:
Sat May 05, 2018 6:09 pm
john-e89 wrote:
Sat May 05, 2018 4:38 pm
SteveSmith wrote:
Sat May 05, 2018 4:30 pm
Should it move freely when not running??
Yes, it’s just mechanical. The actuator is vacuum operated but it should all move freely.
Hi John, I don’t think these are vacuum operated? The earlier cars had one like that but the lci models went to a solenoid activated wastegate. :?
Rob
Yes I think you’re correct on that Rob.... :oops: My mistake. Sorry Steve, wrong year.

Cheers Rob, good spot, my bad.
981 Porkster....tin hat on... :whistle:
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E85 3.0 si,
E85 3.0SE
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E89 35is

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Smartbear
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No Boost - Help!!

Post by Smartbear » Sat May 05, 2018 6:52 pm

No worries John, I think most of us learn something new about these cars every time we look on the forum :)
Rob
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e89 Sdrive2.0 18i, which has turned into a 20i :D
e89 Sdrive3.0i this ones busted, pass me another...
e85 3.0si, i sold my trouble free car...

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SteveSmith
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No Boost - Help!!

Post by SteveSmith » Sat May 05, 2018 6:56 pm

Does this mean it shouldn’t move then?
28i M Sport - Alpine White / Canberra Beige, 19" M359’s, H&R’s / Eibachs, BMS Stage 1 - 271bhp, Front Splitter, CF Rear Lip, Alcantara Steering Wheel and Brembo 4 pots

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john-e89
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No Boost - Help!!

Post by john-e89 » Sat May 05, 2018 7:13 pm

SteveSmith wrote:
Sat May 05, 2018 6:56 pm
Does this mean it shouldn’t move then?
If it is electronic then no, you’re not pushing against a vacuum as in the earlier cars. Sorry, I got the wrong year.
981 Porkster....tin hat on... :whistle:
Previous:
Z4M roady
E85 3.0 si,
E85 3.0SE
No 5 has landed...2nd ///Mental angry roller skate...
E89 35is

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ronk
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No Boost - Help!!

Post by ronk » Sat May 05, 2018 11:03 pm

Waste Gates op mechs have changed a lot over the years .
The Saab turbo was operated by exhaust gas pressure on top of a diaphragm!
You don't stop playing when you get old - You get old when you stop playing!
So I bought a 35is with all the toys to play with. :thumbsup:

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No Boost - Help!!

Post by suttz83 » Thu May 17, 2018 1:49 pm

Do you have fault codes? Common problems with these are the diverted valves/boost solenoids (they seem to have a number of names). If they are faulty they can fail with the wastegates stuck in the open position so no boost can be built to protect the turbos. If I remember the usual codes are something like 30ff or 30fe. If you have Carly or someone does close by they could scan and check for you.

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SteveSmith
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No Boost - Help!!

Post by SteveSmith » Thu May 17, 2018 7:52 pm

Hi all,

All sorted now. It was the boost pipe from turbo to intercooler that had completely filed. Plastic boost pipes!? Apparently all manufacturers use these now as silicone hoses perish.

BMW really weren’t great to deal with. All dealerships are absolutely stacked with recalls!!
28i M Sport - Alpine White / Canberra Beige, 19" M359’s, H&R’s / Eibachs, BMS Stage 1 - 271bhp, Front Splitter, CF Rear Lip, Alcantara Steering Wheel and Brembo 4 pots

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