Help: Car keeps throwing a 17705 error - Pressure drop between turbo and throttle body.

1744 Views 18 Replies 8 Participants Last post by marriedblonde, Feb 13, 2002

marriedblonde

Discussion Starter · Feb 12, 2002

Hello All
I have posted this over in the mkIV forum as well so if you have already tried to help thank you.
Basically everytime my car goes hits approx 4,000rpm at WOT my car throws the code 17705: Pressure drop between turbo and throttle body, check DV.
This is both with my upsolute chip and standard chip. Has anyone else had this?
If I disconnect the maf sensor it runs fine but obviously the MAFR's there for a reason so would like a proper fix for this. Also traction control doesn;t work with the sensor disconnected.
It's been back to the dealers to have it fixed but all they did was clear the codes and kick it back out the door. Because of the chip and other warrenty work I am having carried out I am a little reluctant to keep returning it to the dealer.
Can anyone tell me how to test the MAF to see if it's that that is whats bad?
Many thanks for you help
J.

1 - 19 of 19 Posts

Mike0105

· #2 · Feb 12, 2002

I'm not positive but to me it sounds like you need a nw diverter valve if there is a pressure drop there it may be that the valve is leaking, it is a very comon problem and I suggest you get a Bailey valve http://www.awe-tuning.com
Mike

marriedblonde

Discussion Starter · #3 · Feb 12, 2002

Cheers for the response Mike,
I should have added into my original post that this is with a new revision standard DV which is a known working one (I havea friend with a non DBW car) and also with my Forge valve as well.
Thanks
J.

Mike0105

· #4 · Feb 12, 2002

Is the DV in securely and seated cause if it isi not and boost is escaping you'll also get this error. Maybe Andy wolfsburgh de or Chris chris 86vw can chim in and help, if not send em an IM they're both very knowledgeable
Mike

chris86vw

· #5 · Feb 12, 2002

Re: Help: Car keeps throwing a 17705 error - . (VWMike81)

It is possible it is the MAF sensor. Apperntly accordign to VW the computer compares MAF and O2 readings along with boost to see if everyting is runnign ok. If say teh amoutn of fuel the car asked for doesnt' agree with what the O2 sensors are sayign was mixed, and the boost is "right" it may cause a code that the car thinks it may have lost boost, it is just a safety.
I would look into the MAF personaly. If I rememerb correctly there was a bulletin on this at the dealer when I was there, not sure htough.
chris
[email protected]

Roy1.8T

· #6 · Feb 12, 2002

Re: Help: Car keeps throwing a 17705 error - . (chris86vw)

I'd also add that the leak could be *anywhere* between the turbo and the throttle body...check your clamps, check your hoses (especially around the IC), etc...one of them might be loose.

Roy

chris86vw

· #7 · Feb 12, 2002

Re: Help: Car keeps throwing a 17705 error - . (Roy1.8T)

yes of course that too, brain fart
common spots are before and after the sandwhich pipe, and where it goes form teh metal tube to the rubber tube by the passenger driveshaft.

chris
[email protected]

GTiTES

· #8 · Feb 12, 2002

Re: Help: Car keeps throwing a 17705 error - . (chris86vw)

IT'S YOUR dv - I HAVE A 2001 AWW GTI... HAD THE SAME CODE POP UP.... IF IT WAS A MAF YOU'D GET A CEL....

chris86vw

· #9 · Feb 12, 2002

Re: Help: Car keeps throwing a 17705 error - . (GTiTES)

quote:[HR][/HR]IT'S YOUR dv - I HAVE A 2001 AWW GTI... HAD THE SAME CODE POP UP.... IF IT WAS A MAF YOU'D GET A CEL....[HR][/HR]

NO, NOT ALWAYS ITS IT GOING TO POP A CEL,DO YOU LIKE WHEN I USE ALL CAPS

please know what you are talking about befoire you post and then use all caps on top of that. He clearly said he tried more then on egood DV.

chris
[email protected]

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hman

· #10 · Feb 12, 2002

Re: Help: Car keeps throwing a 17705 error -

quote:[HR][/HR]This code indicates a pressure loss or leak between the Turbo and the
Thottle Body.
-Uwe-[HR][/HR]

Found this info Online

quote:[HR][/HR]Try checking the hose that runs from the throttle body to the IC - you may
have a loose clamp or a bad hose.
[HR][/HR]

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Bug_Power

· #11 · Feb 12, 2002

Re: Help: Car keeps throwing a 17705 error - (hman)

another one that's a PITA and some people have had problems with is the first soft pipe which connects the IC pipe that the DV is attached to the Lower IC pipe. There is a clamp there that has leaked and is pretty bad.
Do you have access to an air compressor? I can tell you how to find out if your getting a leak. It's the intake system tester I posted Diagrams for before. I'll try to find pictures. I guess you could use a bike pump or a car tire pump possibly to work.

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2

Mike0105

· #12 · Feb 13, 2002

Re: Help: Car keeps throwing a 17705 error - (Bug_Power)

Thats a pretty cool little tester Rodney, I cna see you like Home depot as much as the rest of us!!
Mike

Bug_Power

· #13 · Feb 13, 2002

Re: Help: Car keeps throwing a 17705 error - (VWMike81)

it's saved my butt many of times finding leaks. works well to shoot tennisballs too

Yeah I think I should open up a Home depot automotive display out there.

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dbrowne1

· #14 · Feb 13, 2002

Re: Help: Car keeps throwing a 17705 error - . (Roy1.8T)

quote:[HR][/HR]I'd also add that the leak could be *anywhere* between the turbo and the throttle body...check your clamps, check your hoses (especially around the IC), etc...one of them might be loose.

Roy
[HR][/HR]

That would be my first guess as well. This is basically what the code itself is suggesting, although the DV would cause this also.

marriedblonde

Discussion Starter · #15 · Feb 13, 2002

Re: Help: Car keeps throwing a 17705 error - . (dbrowne1)

Thanks a lot everyone for the replies, I'm gonna try and strip down the pipe work from the turbo this weekend if the weather holds out. If I don;t get any joy with this Rodney I'll email you if thats ok for instructions on how to pressure test. I don;t have access to a compressor but I'm sure I can find another way to pressure the test device.
Thanks again everyone for your help, greatley appreciated.
J.

Bug_Power

· #16 · Feb 13, 2002

Re: Help: Car keeps throwing a 17705 error - . (marriedblonde)

I've heard of people using bicycle pumps. BTW I'll be in florida this weekend for the 1552 Show

chris86vw

· #17 · Feb 13, 2002

Re: Help: Car keeps throwing a 17705 error - . (Bug_Power)

If you pressure test yoru in take make sure you bypass yoru crank breather system or you will get oil all over your intake.
chris
[email protected]

Bug_Power

· #18 · Feb 13, 2002

Re: Help: Car keeps throwing a 17705 error - . (chris86vw)

Yeah do it first hard pipe after the Turbo and plug the hose going to the Throttle body with a wd40 can or something. DON'T USE A PAINT CAN. I can just picture someone getting the can shoved intot he intake and spraying grey primer all over their car.

marriedblonde

Discussion Starter · #19 · Feb 13, 2002

Re: Help: Car keeps throwing a 17705 error - . (Bug_Power)

Thanks again guys!
I would love to be at the 1552 show as well, kinda thinking the other love in my life would want me to stay int he uk

Thanks
J.

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