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Hi, sometimes when you start car up it jumps up to 2000rpm for like 2 second and then goes back down and idles at 900-950 rpm, does anybody had same problem?? And once in 3weeks it has fault 'system to lean bank 1' I have put new lambda sensor on but still come on??? Any advice?? Thanks

Which lambda sensor did you replace - pre or post cat?

You might want to look into replacing the coolant temperature sensor as this can cause behaviour like this.

I replaced first lambda, and I did replace coolant temp sensor but still does same!

Have you cleaned the throttle body and done a throttle body alignment?

Yh I have done it before, but I didn't do it after I change lambda and temp sensor. I will try to clean throttle body tomorrow and reset it, thanks for help mate

Also check the vacuum hose between the brake servo and the tb hasn’t split. This can cause some odd behaviour

alexperkins wrote: Thu Jan 04, 2018 11:46 pm Also check the vacuum hose between the brake servo and the tb hasn’t split. This can cause some odd behaviour

i will do thanks mate,i just have another question , do you know if 1.4 8v throttle body will do on 1.0 8v?

It’ll let too much air in as it’s a larger diameter. 1.0 needs a 1.0 TB

alexperkins wrote: Mon Jan 29, 2018 9:38 pm It’ll let too much air in as it’s a larger diameter. 1.0 needs a 1.0 TB

alright will have to leave a 1.0 one, thanks