v4 sti motor, car shakes at idle

[jsan083]

Hi,

I just bought my first subaru, and noticed that it shakes when im at a stop in neutral.

Its a v4 sti motor in a imprezza type r.

Have no idea what is causing it. Any ideas/help please.

Also is there a place in auckland that can fix a seal on the gearbox drive shaft as it has a leak. Somewhere reasonable in price.

Thankd,

Josh

[rex7]

Maybe u need engine mount, u might also need to reseal ur gearbox transfer case, Subaru sell genuine paper gasket, around $20-30. Will take 2hrs to do it, hope this will help.

[jsan083]

Thanks for the reply. 2 hours to do the tail shaft seal? Or both mount and seal

[thorpy]

yeah id say stuffed engine mount , pretty common.

[jsan083]

Any idea how much engine mount would be on 1998 wrx type r with v4 sti engine?

[shore_boy]

If you need to fix the leak where the drive shaft meets the center diff you\'ll need to buy an \'o\' ring for that. Picture and part number are in my thread just below yours. You can do it with the transfer case on the car but mine was extremely tight and i had to be quite forceful to get the new one in and the old one out.

Your issue could with idle could be rough idle? Caused by a few things unfortunately. Run a search for it. I\'m sure there will be a thread related to rough idle on the forum.

[jsan083]

I\'m not entirely sure as this was picked up from an inspection from vtnz before purchase. But i think it is just an \'o\' shaped seal from what the guy explained at vtnz.

The idle is stable between 750-850 rpm but car sometimes shakes.

Thanks for the input. Wheres the best place to get this done at a reasonable price in Auckland?

[jsan083]

Cant seem to find your thread with part number and picture. Sorry i just joined forum today.

[Guest]

http://www.clubsub.org.nz/forum/index.php/topic,39335.msg509872.html#msg509872

[Guest]

If it is your engine mounts I got a pair

[jsan083]

Thanks evowrx.

Vadzter - if it is i might be interested. Is it new or used

[Guest]

 jsan083 said:

Thanks evowrx.

Vadzter - if it is i might be interested. Is it new or used

used but definitely in good nick. i just put the solid mounts off my old motor on so dont need these

[Joker]

is it running on all 4?

an unplugged coil or misfire will give a sweet-as lumpy idle + less power

[jsan083]

I got it checked by vtbz before i bought it and they didnt say anything about an unplugged coil or misfire but car does shake when im on neutral. I will get the mounts checked tomorrow as well as get seal replaced at croydon out west with trans flush.

How much does it cost to fix the coil or misfire?

Vadster - will find out if its actually just a mount tomorrow

[jsan083]

I took a video of my car on idle, can i uploaf videos here and can you maybe tell if its a misfire or coilpack thig. I took of enginr bay, rpm, boost gauge thing and exhaust sound.

[Joker]

youtube it : make it private/only us with link can view it

[jsan083]

Got car checked today and mounts were fine. Mechanic said could be plugs or air flow meter thats causing car to shake at idle

[shore_boy]

 jsan083 said:

Got car checked today and mounts were fine. Mechanic said could be plugs or air flow meter thats causing car to shake at idle

My car had rough idle and seemed like it was running on three until the ecu was surged and died. Mechanic replaced the afm and ecu. Car was fine after that.

[jsan083]

Shore_boy - mechanic tried to do a scan but couldnt. He said it could it be my ecu is chipped

[jsan083]

Mechanic drove car though and said it felt fine.

[shore_boy]

Mechanic is probably right.

Although I do think I heard a missfire? Just check leads and plugs as mentioned before.

The ecu wont tell you if the afm is dead. Well mine didn\'t... lol.

ECU codes are more for sensors and specifically emission standards. AFM is a meter (as the acronym would suggest).

I like the colour!

[jsan083]

Yea he said should get it done next service as its not that bad.

Do you know anyone that could check my plugs and leads? Mechanic cost quite a bit per hour.

As for the ecu, he couldnt connect my ecu onto the scan machine thing.

Thanks shore boy. Do you have a type r as well?

[rex7]

it looks like coil pack, lead, it\'s very common problem.

[Marky]

Clean the AFM

Clean the idle stepper motor thing

See if problem persists - then look at plugs/leads and maybe intake air leaks also (does that BOV seal properly?)

[Guest]

Pm subirex hes a good Sub mech and cheap from what I hear which is uncommon.