EGR valve woes!

The Arch Bishop · 23-10-2006, 18:29

Hi everone. I hate to make a first post with a problem but I have had the feared engine warning light on my 2001 1.4 16valve furby and the following codes read:
P1564-17972, 16785
P0304-16688.
I've read through the existing posts and am worried about cracked piston rings and that replacing the valve doesn't always solve the problem.

Firstly, how difficult is the valve to remove and clean up? Secondly, if this isn't always the cure, what is?

The engine uses some oil, I've topped it up twice in about 7'000 miles but that doesn't seem too excessive.

Any help or advice would be greatly appreciated!

Lummox · 23-10-2006, 20:40

16688 P0304 Cyl.4 Misfire Detected
16785 P0401 Exhaust Gas Recirc.Flow Insufficient Detected
17972 P1564 Idle Speed Contr.Throttle Pos. Low Voltage During Adaptation

Number one and three I wouldnt worry about, number thre can be sorted by adapting the throttle body.

Number two will be your fault. Carbon in the intake system will have blocked up the EGR port under the throttle body. Remove the throttle body and underneath you will see a stem that sticks up into the airflow under the t/b. In the sides of the stem there are two holes. these must be clear of debris for the EGR system to function.

The Arch Bishop · 23-10-2006, 21:08

Thanks for the reply, will have a go at the weekend and cross my fingers that it isn't the rings disintergrating thats causing the debris!

23-10-2006, 18:29	#1
The Arch Bishop Briskodian Join Date: Aug 2006 Posts: 10 Members Car: Thanks: 0 Thanked 0 Times in 0 Posts	EGR valve woes! Hi everone. I hate to make a first post with a problem but I have had the feared engine warning light on my 2001 1.4 16valve furby and the following codes read: P1564-17972, 16785 P0304-16688. I've read through the existing posts and am worried about cracked piston rings and that replacing the valve doesn't always solve the problem. Firstly, how difficult is the valve to remove and clean up? Secondly, if this isn't always the cure, what is? The engine uses some oil, I've topped it up twice in about 7'000 miles but that doesn't seem too excessive. Any help or advice would be greatly appreciated!

23-10-2006, 20:40	#2
Lummox Partner Join Date: Sep 2003 Location: Newport Pagnell Posts: 22,960 Members Car: Mk2 Golf GTi 16v and building a 20VT MK2. Images: 2 Thanks: 29 Thanked 829 Times in 698 Posts	Re: EGR valve woes! 16688 P0304 Cyl.4 Misfire Detected 16785 P0401 Exhaust Gas Recirc.Flow Insufficient Detected 17972 P1564 Idle Speed Contr.Throttle Pos. Low Voltage During Adaptation Number one and three I wouldnt worry about, number thre can be sorted by adapting the throttle body. Number two will be your fault. Carbon in the intake system will have blocked up the EGR port under the throttle body. Remove the throttle body and underneath you will see a stem that sticks up into the airflow under the t/b. In the sides of the stem there are two holes. these must be clear of debris for the EGR system to function. __________________ www.unit18.co.uk Remapping Service now available, PM for details.

23-10-2006, 21:08	#3
The Arch Bishop Briskodian Join Date: Aug 2006 Posts: 10 Members Car: Thanks: 0 Thanked 0 Times in 0 Posts	Re: EGR valve woes! Thanks for the reply, will have a go at the weekend and cross my fingers that it isn't the rings disintergrating thats causing the debris!

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