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ENGINEER007 · 05-07-2013, 04:57 AM

(04-07-2013, 11:40 PM)addo Wrote: The remote control functions are divorced from immobiliser operations. The latter is determined by recognition of the key's transponder chip and successful matching with stored characteristics. No match or no dialogue means no start.

But the car started before I changed the head gasket. Do you think then it could be the immobilizer even though it starts on easy start? I am very confused at the moment I just need to follow the correct steps. You advice is to get someone with a Lexia to check it out properly first?
Thanks

**addo** · 05-07-2013, 06:28 AM

Check the chip is not fallen out of the key. If that is OK then yes, Lexia or Diagbox are your best friends. They show an awful lot more than generic scan tools.

ENGINEER007 · 05-07-2013, 01:34 PM

(05-07-2013, 06:28 AM)addo Wrote: Check the chip is not fallen out of the key. If that is OK then yes, Lexia or Diagbox are your best friends. They show an awful lot more than generic scan tools.

The key is ok it has never been opened etc its a two button key 2001 HDI. If there was a problem with the chip wouldnt the key light on the dash come up? would it not run like it does on easy start also? I am confused now.
Anyone selling a Lexia system?

**addo** · 05-07-2013, 01:46 PM

Normally, yes the dash telltale would light up if there was an immobiliser fault. Does it quickly extinguish if you put the key in and turn it on?

I can't say for diesels, but on petrol models a no-start condition can come from the underbonnet fuse panel or BSM just giving up the ghost. It's an uncoded item so you can swap like for like. From memory some came with an extra fuse you are supposed to remove for dependable operation - BBAReman mention this shortcoming on their website.

ENGINEER007 · (This post was last modified: 06-07-2013, 06:39 AM by ENGINEER007.)

(05-07-2013, 01:46 PM)addo Wrote: Normally, yes the dash telltale would light up if there was an immobiliser fault. Does it quickly extinguish if you put the key in and turn it on?

I can't say for diesels, but on petrol models a no-start condition can come from the underbonnet fuse panel or BSM just giving up the ghost. It's an uncoded item so you can swap like for like. From memory some came with an extra fuse you are supposed to remove for dependable operation - BBAReman mention this shortcoming on their website.

Anyhow, I puts the battery charger on the car yesterday just to top it up and whilst it was charging decided to look again at the cam sensor. Took it off cleaned it up as it has a bit of oil on it (don't know why) and put it back and as it has an elongated hole for the bolt decided to put it in the middle instead of close to the camshaft sprocket and presto! the engine starts every time..... Now the problem is it vibrates heavily as if one of the injectors isn't functioning correctly is there any way of checking these other than taking them in to a diesel specialist? Is there any other checks I can do? Also there seems to be a dull knocking coming from the engine could this be big ends? It did not do this prior to the head change. Thanks

**brodfather11** · (This post was last modified: 06-07-2013, 07:09 AM by brodfather11.)

Check that the injection timing is OK, you get expensive sounding noises if its out. You probably altered the timing by not putting the sensor back in its proper position

**Rustscrat** · 06-07-2013, 10:40 AM

Think the gap needs to be 1.2mm. Confused

alut:

ENGINEER007 · 07-07-2013, 07:51 AM

(06-07-2013, 07:05 AM)brodfather11 Wrote: Check that the injection timing is OK, you get expensive sounding noises if its out. You probably altered the timing by not putting the sensor back in its proper position

How do you check injection timing? do you mean mechanical timing or something else? Not sure of how to do this thanks for the reply though.

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