code 66 help

[Guest]

bg5a throwing code 66, no boost car cuts out at 4000rpm. anyone have any ideas? have just replaced turbo double checked everything,

any help would be great thanx

[johndoe1003]

my boss at work told me about this one....apparently its a total bitch to fix?

[dubbedup]

is it a twin turbo?

[Guest]

yip twin turbo

[Ammon666]

Code 66 is the general error code for anything to do with the sequential turbo system. The cutting out at 4000 rpm is the 'limp home' mode, reset the ecu should clear this up, until you get the 66 error back again that is. And yes it is a bitch to find and fix. Good Luck ;D

[Guest]

any ideas on some causes?

[ReubenH]

Lots of things, just take it to a subaru dealer to have them fix it (i.e winger, armstrong, or highbrook auto etc.). It could be bloody expensive, or a simple fix

[johndoe1003]

even winger hates it when they come in with code 66...they try offload them to us hahaha

[Guest]

how far can you drive in limp mode? because im moving from nelson to dunedin on friday. cnt afford to spend much on car with the cost of moving and all.

[dubbedup]

Welcome to sunny Dunedin!, well in my rs i hit check lite leaving Dunedin drove thru to Chch (couldn't get to any wreckers to buy AFM - Which was my prob) prolly did 500ks with no major hassles, had to keep it under 4000 rpm the whole way which ment FA passing etc, the engine is still going now (over two years ago) so guess there is no major damage done,

However this may not be the case with code 66 on TT setup

[Guest]

thank you, i guess i'll give it a go, lol. any good subaru mechanics in dunners?

in nelson the chaged me $300 to tell me they didn't know what was wrong with it.

[dubbedup]

um we have Southern motor court, i don't take my car to a mechanic unless I'm reallllllllllly stumped, most the time i/mates figure out whats happening, but none of us own TT (for this exact reason)

[johndoe1003]

take it to a subaru specalist, or someone who has dealt with code 66 before. saves time

[Guest]

oh oh oh ASK ME !!!!!!!

three very basic checks which fix 90% of problems causing code 66

[Guest]

i will take any advice i can get, as long as it don't cost to much at this stage.

[dubbedup]

please do tell,

[leggyfreak]

yes please do tell i got 66 on my way home today

[ReubenH]

Ah, but that's his trade secret!

Seriously though, dying to know the secret...

[Guest]

most 66's are caused by failure of secondary BOV, they develop a vac leak internally (this triggers CEL when the vac tank empties out when under load) ie no engine vac

Primary BOV failure will also cause this code, and the car will only have a small amount of boost (4-5 psi normally)

Primary turbo wastegate seizing is another primary cause for 66

Some other items you need to check

Vac tank - is it still there or has some pannel beater thrown it away

Hose to vac tank - check it for leaks, often is damaged in small frontal impacts

Good luck -- The secrets are out

For every car this fixes please send me $1,000,000.00 in cash

[Guest]

is the vacum tank where hoses 10 and 23 go to?

[Guest]

NO ....10 and 23 are waste gate solenoid hoses

The vac tank is located in the same area (Inside L/F guard) but the hose comes from the

TT control black box (R/H strut tower) around the front bumper iron to the vac tank

[Guest]

thank you for that well have a look and let ya know how i gt on.

[Guest]

Am I a millionare yet

[Guest]

if you blow in and out on the piece where the small hose is attached to the primary BOV should you hear i small popping noise? is that normal or is it stuffed?

[Guest]

it must hold vac on the small hose fitting