2zz mr2 mk3 variable idling when warm

This section is for technical Q & A
Please try the search function before starting a new thread.
Forum rules
Many subjects will have been discussed before. Please try the search function before starting a new thread.
Check in the Know Your 2 as the information you need may already be there.
Post Reply

Topic author
MN666
Posts: 1
Joined: 19/03/21 14:17

2zz mr2 mk3 variable idling when warm

Post by MN666 »

Hi All,

Been scrolling through the forum, found similar issues but not exactly the same.
Hope someone could help me figure this out.

So here is the issue:
Once the car is warm it starts to idle like you can see in the video below.

https://www.youtube.com/watch?v=Q3sRMs0zW7Q


The RMP starts to go down to about 600rmp then back up.
Continues like that while the car isn’t moving.


The current spec and known issues:
- 2zz swap carried out by Rogue about 2 months ago (engine, air intake, exhaust)
- 1zz gearbox
- 1zz 02 sensors (one known faulty)

- Last weekend found that 2 of my sparkplugs had moisture in them and had failed so I replaced my BKR6E with these from Bosch https://www.eurocarparts.com/p/bosch-sp ... -408220160
(moisture not known where from, it did rain a lot the previous day and I have no sparkplug coil cover on the engine, no coolant issues so I guess the head gasket is ok?)




already purchased the BKR6E sparkplugs to replace the Bosch ones, but if anyone could think of anything else worth checking would be much appreciated.

thank you


Post Reply

Return to “MK3”