Dump Valve Problems?

day tripper · 23-01-2005, 12:06

Recently my engine warning light has been coming and coming.

One time last week after turning the key the engine was fluctuating really badly revs going really low to around 300rpm to 1500rpm. The engine nearly cut out and the interior light nearly went out.

I took it to a friend the other day was it was checked on the diagnostics, it showed that the forge dump valve had made the light come on.

Does anyone know why?

**VRStu** · 23-01-2005, 12:30

Phone the guys at Forge they will advise you and take the valve in for service - normally FOC.

Although - re-reading your post, I don't think the valve would cause that, I think they are fobbing you off mate.

The DV is held closed by spring pressure until you lift off the throttle. The turbo wouldn't be on boost at idle and therefore that system would not be in use

Lummox · 23-01-2005, 13:32

But if the DV isnt sealing completely then un metered air is drawn into the inlet, this can cause idle problems.

I'd strip the DV down and give it a service myself.

**VRStu** · 23-01-2005, 13:36

Yeah, good point Ross. Didn't think of that doh!!

The problems with piston valves are piston wear and the grease causing it to become sticky.

jason · 23-01-2005, 14:42

i had the same problem ,but not enough to get the lights on, forge 006 was as dry as a bone inside,quick clean and a bit of light greasing had it cracked

day tripper · 27-01-2005, 00:29

Well ive emailed forge who have sent me a service kit which consist of red grease, ring/seals and some metal thing, any ideas on what im supposed to do? (havent had the chance to look at it yet)

MonkeyHanger · 27-01-2005, 00:31

Forge DV Service Intructions.

http://www.forgemotorsport.co.uk/valve_service.pdf

boyced · 27-01-2005, 02:06

do dv30's also need servicing?

K44 ENT · 27-01-2005, 18:39

Quote:

Originally Posted by boyced

do dv30's also need servicing?

Yes they can be serviced, not sure how often but spoke to them when I fitted my DV30 to find out what lubricant they use. Was told it was a "seceret recipe" and that they will service the valve if I sent it back when the times comes, although they have some valves returned for servicing a few years old/50,000 miles with the original lubricant in and still working fine

day tripper · 27-01-2005, 22:30

Thanks Geoff thats exactly what im looking for.

Clarey · 28-01-2005, 12:18

Double check all the hoses around the intake and TIP. I had a hose come off (my own fault

)which led to really bad idle at start up, but run ok after 30 secs or so, with no check engine light. Dealers had it overnight and couldn't find a problem

As Ross says, unmetered air entering is a possibility.

day tripper · 29-01-2005, 23:33

Ive still not had time to service the dump valve yet, but when i started it up today, the same thing happened, i pressed the accelerator to rev it but there was no response whatsoever, stomped on the pedal a few times and it was ok...

day tripper · 23-02-2005, 10:28

Right ive put the stock dv back on for now, was ok for 2 days and the same thing happened the other day,fluctuating between 350-700rpm on startup????

Fasterbaby · 23-02-2005, 18:39

What was the code that showed on the diagnostics?

boyced · 23-02-2005, 18:44

Quote:

Originally Posted by Fasterbaby

What was the code that showed on the diagnostics?

7.

day tripper · 23-02-2005, 20:47

I dont have a clue what the code was, gonna check it again shortly, ill let you know.

Sure its not a coil pack or maf?

23-01-2005, 12:06	#1
day tripper Briskodian Join Date: Mar 2003 Location: Manchester Posts: 2,717 Members Car: Suzuki Ignis Sport Thanks: 0 Thanked 0 Times in 0 Posts	Dump Valve Problems? Recently my engine warning light has been coming and coming. One time last week after turning the key the engine was fluctuating really badly revs going really low to around 300rpm to 1500rpm. The engine nearly cut out and the interior light nearly went out. I took it to a friend the other day was it was checked on the diagnostics, it showed that the forge dump valve had made the light come on. Does anyone know why? Last edited by day tripper; 23-02-2005 at 01:58.

23-01-2005, 12:30	#2
VRStu Txt Spk Police Join Date: Dec 2004 Location: Hampshire Posts: 21,120 Members Car: Audi S3 Thanks: 195 Thanked 1,046 Times in 928 Posts	Phone the guys at Forge they will advise you and take the valve in for service - normally FOC. Although - re-reading your post, I don't think the valve would cause that, I think they are fobbing you off mate. The DV is held closed by spring pressure until you lift off the throttle. The turbo wouldn't be on boost at idle and therefore that system would not be in use __________________ Stu Stu's Websites - http://www.fabia-vrs.com & http://www.octavia-vrs.com Stu's Car - 2008 Audi S3 - Ibis White, Black Optics Pack, Privacy Glass, Auto Bi Xenon Headlights, Rain Sensing Wipers, Bose Sound System, Ipod Prep, GSM Phone Prep, Flat Bottom Multi Function Steering Wheel, Electric Folding Mirrors, Acoustic Parking, Cruise Control, Interior Light Pack, Non Smokers Pack. SWMBO's Car - 2008 Seat LEON TDi Stylance, Black Magic, Sports Pack, Rear Parking Sensors. Something for Weekend - A Patio Last edited by VRStu; 23-01-2005 at 12:32.

23-01-2005, 13:32	#3
Lummox Partner Join Date: Sep 2003 Location: Newport Pagnell Posts: 22,963 Members Car: Mk2 Golf GTi 16v and building a 20VT MK2. Images: 2 Thanks: 29 Thanked 831 Times in 699 Posts	But if the DV isnt sealing completely then un metered air is drawn into the inlet, this can cause idle problems. I'd strip the DV down and give it a service myself. __________________ www.unit18.co.uk Remapping Service now available, PM for details.

23-01-2005, 13:36	#4
VRStu Txt Spk Police Join Date: Dec 2004 Location: Hampshire Posts: 21,120 Members Car: Audi S3 Thanks: 195 Thanked 1,046 Times in 928 Posts	Yeah, good point Ross. Didn't think of that doh!! The problems with piston valves are piston wear and the grease causing it to become sticky. __________________ Stu Stu's Websites - http://www.fabia-vrs.com & http://www.octavia-vrs.com Stu's Car - 2008 Audi S3 - Ibis White, Black Optics Pack, Privacy Glass, Auto Bi Xenon Headlights, Rain Sensing Wipers, Bose Sound System, Ipod Prep, GSM Phone Prep, Flat Bottom Multi Function Steering Wheel, Electric Folding Mirrors, Acoustic Parking, Cruise Control, Interior Light Pack, Non Smokers Pack. SWMBO's Car - 2008 Seat LEON TDi Stylance, Black Magic, Sports Pack, Rear Parking Sensors. Something for Weekend - A Patio

23-01-2005, 14:42	#5
jason Briskodian Join Date: Oct 2003 Location: shropshire Posts: 1,914 Members Car: skoda octavia VRS Thanks: 10 Thanked 2 Times in 2 Posts	i had the same problem ,but not enough to get the lights on, forge 006 was as dry as a bone inside,quick clean and a bit of light greasing had it cracked __________________ louder than war

27-01-2005, 00:29	#6
day tripper Briskodian Join Date: Mar 2003 Location: Manchester Posts: 2,717 Members Car: Suzuki Ignis Sport Thanks: 0 Thanked 0 Times in 0 Posts	Well ive emailed forge who have sent me a service kit which consist of red grease, ring/seals and some metal thing, any ideas on what im supposed to do? (havent had the chance to look at it yet)

27-01-2005, 00:31	#7
MonkeyHanger Briskodian Join Date: Mar 2003 Location: Anywhere but here Posts: 8,779 Members Car: Thanks: 0 Thanked 0 Times in 0 Posts	Forge DV Service Intructions. http://www.forgemotorsport.co.uk/valve_service.pdf

27-01-2005, 02:06	#8
boyced fully boyced. Join Date: Jul 2004 Posts: 2,919 Members Car: Octavia vRS Thanks: 0 Thanked 0 Times in 0 Posts	do dv30's also need servicing? __________________

27-01-2005, 22:30	#10
day tripper Briskodian Join Date: Mar 2003 Location: Manchester Posts: 2,717 Members Car: Suzuki Ignis Sport Thanks: 0 Thanked 0 Times in 0 Posts	Thanks Geoff thats exactly what im looking for.

28-01-2005, 12:18	#11
Clarey Briskodian Join Date: May 2003 Location: Warrington, Cheshire Posts: 408 Members Car: skoda Thanks: 4 Thanked 5 Times in 5 Posts	Double check all the hoses around the intake and TIP. I had a hose come off (my own fault )which led to really bad idle at start up, but run ok after 30 secs or so, with no check engine light. Dealers had it overnight and couldn't find a problem As Ross says, unmetered air entering is a possibility. __________________ Cheers, Phil. Last edited by Clarey; 28-01-2005 at 12:22.

29-01-2005, 23:33	#12
day tripper Briskodian Join Date: Mar 2003 Location: Manchester Posts: 2,717 Members Car: Suzuki Ignis Sport Thanks: 0 Thanked 0 Times in 0 Posts	Ive still not had time to service the dump valve yet, but when i started it up today, the same thing happened, i pressed the accelerator to rev it but there was no response whatsoever, stomped on the pedal a few times and it was ok...

23-02-2005, 10:28	#13
day tripper Briskodian Join Date: Mar 2003 Location: Manchester Posts: 2,717 Members Car: Suzuki Ignis Sport Thanks: 0 Thanked 0 Times in 0 Posts	Right ive put the stock dv back on for now, was ok for 2 days and the same thing happened the other day,fluctuating between 350-700rpm on startup????

23-02-2005, 18:39	#14
Fasterbaby Briskodian Join Date: Oct 2004 Location: Grimsby Posts: 732 Members Car: Occy VRS Thanks: 0 Thanked 0 Times in 0 Posts	What was the code that showed on the diagnostics? __________________ www.fasterbaby.co.uk www.ulcebybengals.co.uk My gallery Ex Octavia Vrs, now Volvo 850 T5 Rica'd to 304 bhp.

23-02-2005, 20:47	#16
day tripper Briskodian Join Date: Mar 2003 Location: Manchester Posts: 2,717 Members Car: Suzuki Ignis Sport Thanks: 0 Thanked 0 Times in 0 Posts	I dont have a clue what the code was, gonna check it again shortly, ill let you know. Sure its not a coil pack or maf?

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
EVO dump valve	sdmegawuk	Maintenance & Performance	3	29-02-2004 00:29
Dump valve from Golf 1.8T	MK1Man	Maintenance & Performance	6	26-02-2004 10:18
Dump Valve Problems	ChrisYeow	Maintenance & Performance	23	09-01-2004 00:03

Dump Valve Problems?

Dump Valve Problems?

Similar Threads