Rough Idle After Giving It A Bit

[EnviTurbo]

See the Wog. I'm sure he will cure all your T's ills

[JET4CE]

Hmm ok thanks.

Can I ask a really dumb question? Who's the WOG???

Cheers

[bugster70]

Can I ask a really dumb question? Who's the WOG???

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Uh oh, here we go...

Try checking out this link under the Forum Sponsors section. And good luck!

[Fat-Tony]

if your in adeilade, call him up, he is leaving this avo and I do believe he has enough room for 2 more tunes

[BAturb]

judging by the only mods you have are the bigger cooler, you have overboost issues, if it didnt do it before with the stock cooler and it is doing it now with a bigger free flowing cooler, bing, there is your answer

[Revved]

hi I have a prob like this to, if I see a worthy race at the lights ill boot it up there so I catch the red and slam on the breaks so I can get a good launch that little bit of a spray and sudden stop makes my idle dodgy for a while, not long at all but still idles luggy kinda off.. but it fixes it self so your prob is worse.. mine is stock, its prob gonna die when I mod it

[Kimberley Scott]

hi I have a prob like this to, if I see a worthy race at the lights ill boot it up there so I catch the red and slam on the breaks so I can get a good launch that little bit of a spray and sudden stop makes my idle dodgy for a while, not long at all but still idles luggy kinda off.. but it fixes it self so your prob is worse.. mine is stock, its prob gonna die when I mod it

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Please explain, how does this help?

Scotty

[tab]

It jus duz caus its fuly sik cus!

[Kimberley Scott]

Fully something. I was thinking that he was talking about launching of the rubber he laid by braking, but being ABS that theory goes out the window. Maybe that brief squirt prepares the ecu. Who knows, Revved please tell.

Scotty

[mickq]

I have had this exact same issue quite a few times. I was wondering if it was just a quirk with my car.

My car is standard.

It always seems to happen just before the car is fully warmed up. Im usually a big one for warming it up before playing, but some mornings at an intersection 1.5km from home I give it a spurt off the lights - clutch out slow and then accellerating from say 1500 to to ~4500 rpm or so, at 3/4 to full throttle. At that time the temp guage would be at the 1/4 mark.

When I back off, it feels like the car is running on 4 or 5 cylinders. You can accellerate...just and the car shakes. I tend to just drive sedately for 30 secs and it goes away quickly.

I do not believe it has anything to do with valve springs. If my car was modded then sure, but its not, and the acceleration that causes it is quite a bit less of a boot than I normally give the car (and I do that all day, every day). The only way I could think it to be spring related is if the springs are also cold and thus are moving differently, but I imagine the metal they use would be pretty good in a big range of temps (wouldnt be much good in the snow otherwise...).

I dont think its overboost - at least it doesnt feel like it overboosted. But it may be possible a colder than normal turbo behaves a little differently and briefly overboosts. Do you get a warning light if the engine overboosts and goes into limp mode? I thought you did, and I also thought it took a turning off of the engine and restart to fix the limp mode issue.....can anyone used to overboosting comment on that?

I was left wondering if the engine has a kind of short term limp mode that kicks in if you give it too much before the engine is at a certain temp. Just enough to make you aware, then it quickly goes back to normal.

The only other time I have often felt the exact same engine behaviour is if I go to start my car and let go of the key before it properly sparks, and it coughs and then dies after a second. When I next start the car a second or two later, the engine sounds sick as hell (4 or so cylinders I would guess). This disappears if you stop the car, wait 10 or so seconds and restart, or if you let it sit idling (aka wobbling) for 15 or so seconds.