Rough idle

BRADLEY WALKER

MEMBER
2007 JAGUAR X-TYPE
2.2L
TURBO
2WD
MANUAL
87,000 MILES

Hi there,

I recently bought the car listed above used. It is a diesel. The car had new injectors fitted and a service before I got it.
The car is very good except when the car starts from cold it idles very rough but once it warms up (two to three minutes) it is fine.

Can you provide any insight on this?

Thanks

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
42,904 POSTS

This sounds like an engine coolant sensor is not working right. But to be sure lets run the codes to see what comes up. Here is a guide to help us get started:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

If this is a euro car the ALDL will be different.

Please run down this guide and report back.

Cheers, Ken

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Monday, August 13th, 2018 AT 2:51 PM

BRADLEY WALKER

MEMBER
2 POSTS

Hi Ken, I have taken the car to me local garage and they plugged in a Snap On diagnostic scanner - no fault codes came up and there are no lights on my dashboard.
There was an injector leaking badly which I have since had replaced but the car is still idling rough.

Thanks

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Thursday, August 23rd, 2018 AT 1:29 PM

KEN L

MASTER CERTIFIED MECHANIC
42,904 POSTS

It sounds like you have a vacuum leak which will cause the issue you have described. Here is a guide that should help find it:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Please run down this guide and report back.

Cheers, Ken

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Thursday, August 23rd, 2018 AT 8:16 PM