Gti6 Trouble Shooting Required

[jamie_1992 66 1 Cars]

ok so i took the 205 out for a spin this evening and the engine struggles to rev past 4000 rpm. if you just plant your foot it will sit at 4000 and wont go past but you can get it through the whole range if you slowly push the throttle in.

first thing i checked was the plugs, all looked fine gave them a quick clean with a wire brush and put back but no luck.

where should i turn my attention to now im thinking something to do with the throttle body?

 

 

[camgti 56]

Is the tb opening fully?

 

Is it struggling and missing?

 

Does it have fuel?

 

Were the plugs fouled? What plugs are ypu using?

 

Cam

[jamie_1992 66 1 Cars]

Is the tb opening fully?

 

Is it struggling and missing?

 

Does it have fuel?

 

Were the plugs fouled? What plugs are ypu using?

 

Cam

i have not looked to see if it opens fully but as i can get it to rev right up id assume it dose. it doesn't struggle or miss, plugs were fine but im going to pick up some new ones today

[jamie_1992 66 1 Cars]

right well i have put some new plugs in along with a new inlet gasket as old was broken and thought it could be that. it ran ok and reved as it should so i thought i had fixed it but then took it for a drive and same thing happened wont rev past 4000 if you boot it but can ease it up past with light throttle, it seems to be over fuelling as it not cough and splutters has also coked the plugs up black

so need some help on what controls the fuelling

[camgti 56]

How old is your lambda? They can cause big issues. Try unplugging it and driving without abd see if that helps. Could also be cts.

 

Cam

[jamie_1992 66 1 Cars]

lambda is fairly new but makes no difference if its unplugged. i tested the tps and seemed to be ok although it only went up to 4.5v rather than 5v, i couldn't get much of a reading from the map sensor but think thats down to my lack of multimeter knowledge. going to get some sensors anyway but cant get them till tueday now

if its not them im out of ideas

[pugdamo 111 2 Cars]

Has your car had the diagnostic socket fitted?If not it may be worth fitting one as you can waste a lot of money just throwing parts at it, even if there isn't a fault logged the live data is a massive help on its own to work out what's going on.

[dobboy 231 2 Cars]

I'd try testing the green coolant sensor first.

[jamie_1992 66 1 Cars]

do you think the coolant sensor could really stop it reving it makes no difference if i disconnect it other than the idle increases

[jamie_1992 66 1 Cars]

Not getting on very well, so far iv replaced the coolant temp sensor, map sensor throttle bode with all sensors, cam sensor and fuel pump I'm still getting the same problems. It won't rev, coughs and splutters if I plant my foot but if I lightly push it it will rev all the way to the red

Im running out of ideas now, thinking I'm going to need to send it to someone

 

Any help

[oldkiteman 6]

How old is your exhaust?Could be blocked.

[oldkiteman 6]

Also worth checking Dizzy cap and coil tower for cracks.

[jamie_1992 66 1 Cars]

exhaust is a 2.5" stainless steel been on about 6 months

im going to try wiring in my oebd plug and find someone who can plug into the ecu

[pugdamo 111 2 Cars]

I have already said this but the money your wasting throwing bits at this fault, if you've got a diagnostic socket then get it plugged in, if you haven't then fit one, it will Save time and money for any future faults aswell.

 

I started writing that, then i had to take an impatient child to the toilet, so ignore that whole post lol

Edited May 8, 2015 by pugdamo

[James_K 6 1 Cars]

I agree with pugdamo, I had a similar issue with my gti6, it wouldn't rev past 5000 and I wasted a lot of money changing parts. Eventually got a diag port fitted and used pp2000. It turned out to be an alternator issue, although it doesn't sound quite like your problem as mine would not rev above 5000 no matter what I did.

Incidentally, a local garage fitted a diagnostic port to the loom for £15. I found that a generic fault reader that the garage had wasn't sufficient to diagnose it only pp2000 gave enough info

[jamie_1992 66 1 Cars]

Well iv ordered a pp2000 and going to finally fit the obd socket. Luckily most of the bits iv tried have been spares iv collected so not cost mush only a cts at £20

[jamie_1992 66 1 Cars]

Not having much luck the pp2000 I have won't install on my laptop

Dose anyone know if a snap on machine will read a gti6 ecu, the last one I tried it wouldn't

[Plumbob 66 1 Cars]

Snap on Solus will read it... Worked on mine

 

[jamie_1992 66 1 Cars]

well an update on this, its now running spot on and turns out its the so called hi flow fuel filter i got from torques, once removed it works just like it used to

[Tom Fenton 1,541]

Was it one of this type?

 

http://pages.ebay.com/link/?nav=item.view&alt=web&id=150880654066

[jamie_1992 66 1 Cars]

Was it one of this type?

 

http://pages.ebay.com/link/?nav=item.view&alt=web&id=150880654066

yer thats it

[Tom Fenton 1,541]

I also had issue with that filter when getting a car mapped on the rolling road. Sufficient for about 150bhp and no more!

[jamie_1992 66 1 Cars]

thinking of fitting this now http://www.ebay.co.uk/itm/380779827808

think it will be up to the job?

[welshpug 1,657]

that will do, though tbh you might as well go with the totally standard filter for significantly less and still use the same fittings.

[blandy 29]

After just discovering the same issue with my filter.. What is the reasoning behind it not being sufficient for 150bhp+ is it to fine a filter etc? Reason I ask is it I've mounted everything neatly so can I change the gauze to a less restrictive one? But then guessing that could be problematic with smaller particles?

 

I'm on an6 fittings but if it's a bigger filter etc I'll probably have to get new hose and reroute so want to buy the best solution if i can't run with anything that's already fitted