Page 1 of 4
Power Hesitation in mid range (amongst other things)
Posted: Thu Jul 10, 2008 12:40 pm
by ticki
Hi all
Power hesitation in the mid range, it feels like 1 or 2 cylinders are not firing correctly. Any ideas?
Posted: Thu Jul 10, 2008 1:17 pm
by tegwin
Whip the plugs out....make sure they are all the right colour....
Then replace the plugs....replace the HT leads, and possibly the coil pack....that should solve it
Having said that...
At around 4K RPM the variable valve timing opens up....so you will get a bit of a bump then more power......Is that what it is?
Posted: Thu Jul 10, 2008 1:36 pm
by ticki
tegwin wrote:Whip the plugs out....make sure they are all the right colour....
Then replace the plugs....replace the HT leads, and possibly the coil pack....that should solve it
Having said that...
At around 4K RPM the variable valve timing opens up....so you will get a bit of a bump then more power......Is that what it is?
i have checked the spark plugs, they all seem in very good condition, except they are not all the same colour, they where changed at the service before last 10 months ago. by VW
Posted: Tue Jul 29, 2008 1:54 pm
by ticki
OK
VW diagnostic completed (No faults found)
then
Spark plugs replaced
HT leads replaced
Coilpack replaced
Air filter cleaned
Inlet Manifold cleaned
I still have this problem. At stand still when i build up the revs, the engine (especially in the low midrange) begins to shudder/vibrate, and the exhaust pops (not loud thou) randomly.
On the road the car feels like its only running only 100bhp.
Please help
Posted: Tue Jul 29, 2008 2:06 pm
by sorted
Altenator?
Posted: Tue Jul 29, 2008 2:54 pm
by ticki
sorted wrote:Altenator?
explain that one please?
Posted: Tue Jul 29, 2008 4:35 pm
by sorted
ticki wrote:sorted wrote:Altenator?
explain that one please?
Mine went on Thursday, and it was sputtering and juddery on the way home - so though maybe you should have a quick squint at yours!
Did you do the normally strip down the TB and give it a good clean?
Posted: Tue Jul 29, 2008 5:59 pm
by kinder
yer i agree i had a similar prob a few months ago and it was the tb needed cleanin and setting up as it was set too high
Posted: Tue Jul 29, 2008 11:00 pm
by ticki
TB?
Posted: Wed Jul 30, 2008 12:06 am
by pologti76
Throttle Body
Posted: Wed Jul 30, 2008 11:49 am
by ticki
Oh dear something else is happening now, might be related. when I take my foot off the throttle, the revs take longer to die down. any ideas?
Posted: Wed Jul 30, 2008 11:50 am
by ticki
sorted wrote:ticki wrote:sorted wrote:Altenator?
explain that one please?
Mine went on Thursday, and it was sputtering and juddery on the way home - so though maybe you should have a quick squint at yours!
Did you do the normally strip down the TB and give it a good clean?
I didnt strip it down.
Posted: Wed Jul 30, 2008 11:51 am
by chrischap2003
It does sounds Throttle Body related :-s
Posted: Wed Jul 30, 2008 11:56 am
by ticki
is it easy to strip in down?
Posted: Wed Jul 30, 2008 11:05 pm
by Tim_GTi
Yeh definitely sounds like the TB needs a clean.
buy some 'carb cleaner' from halfords.
Take off your airbox/filter exposing the throttle body, give it a wipe down, the get someone to start the engine and pulse the accelerator up to 5-6k revs and down again, over and over. You'll notice the butterfly opens. Spray approx half the can of carb cleaner constantly into the TB.
When finished leave the car running, and take it for a good run. Let the VVT kick in (tip from Mr. P).
Here's a dirty and a clean Throttle Body
