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[SP_3.2]

Hi I have made a point not to re oil as i was told that this can cause probs with the MAF just left it as it is.Will give a check this week end.

Thanks

Steve.  

[Elite Pete]

Ive filled up the 3.2 at Sainburys today for my weekly jaunt to Durham so lets see if the light comes on.

[SP_3.2]

Have a good trip hope that it does  not. How do you find the 3.2 have you had it long?.Seems to be a few 3.2 on the Forum.  

[Elite Pete]

I can't belive how quick it is and its quite economical as well, considering

[SP_3.2]

That is true have you used V-power in it.Seem to help mine a bit PLUS it seem to be the only thing that keep,s that light off.  

Have you had to do much work on yours as yet.

[Elite Pete]

That is true have you used V-power in it.Seem to help mine a bit PLUS it seem to be the only thing that keep,s that light off.  

Have you had to do much work on yours as yet.

I bought it with a busted gearbox so ive replaced that and as a precaution I did the breathers, cam cover gaskets and an oil change. I want to keep it but the wife is insisting on me selling it

[VXL V6]

As said before, I reckon if you stick with one fuel for a while the Emissions Control systems will sort themselves out, I think the system is VERY sensitive and until it's run on a different fuel for a reasonable mileage it's not entirely happy. the reason why the lamp stays on is because you haven't restarted the car 20 times to clear it (ie if you reset the code with TechII the day after I bet it wouldn't come back on), it's the 20 starts that is fooling us into thinking there is 'more' of a problem.

I'm currently running on V-Power, after a couple more tankfuls, if the lamp doesn't come back on i'm going to use BP / Shell normal unleaded, I'm guessing the light will come back on but once settled if I stick to the above it won't come back on.

Well that's my theory anyhow.

Question is... why has the emissions control system become so sensitive and why only on a few 3.2's

[Elite Pete]

I know the 3.2 has 4 Lambda sensors but the 3.0 has 2 so dont know if that will make a difference :-/

[VXL V6]

I know the 3.2 has 4 Lambda sensors but the 3.0 has 2 so dont know if that will make a difference :-/

It does indeed, we've had two threads on this subject and as you say, the issue seems to be with the 3.2 cars with the later lambda / emissions set up.

[SP_3.2]

I think that it is the 2 after the cat i belive that they are a diff set up to the the ones pre cat. I think that they have a VERY VERY fine tolarance to changes. So hopefully sticking to the same petrol will keep them happy withing there tolarance range.

It,s kind of nice in a way to know that i am not the only one that have had this prob.

GOT to love the old 3.2

[VXL V6]

It,s kind of nice in a way to know that i am not the only one that have had this prob.

Ditto!

I could go with the earlier theory about contamination of the sensors and the fact that the post CAT sensors are not getting hot enough to 'burn' this contamination off.

Tempted to buy two new post CAT sensors when the finances allow.... also they are the easiest ones to change!

[SP_3.2]

Yes not cheep £100 + i think. The point abut the heating is a good one becuse i was told that the prob with the non Vaux 02 i had was the heating part of the system. As you say easy to fit aswell. I did mine a few weeks ago .Also opened the car up on the motorway to get it over 4,000 revs with the sports button on just for a sec as i could see the petrol needle decreasing almost as fast as i could see the speed increasing.

Just hope it stays off now MOT next month.          

[SP_3.2]

Ran out of Petrol a few days ago. Was looking at a long walk to get some then i recaled that i had some in a container in the boot.The thing is this was just unleaded for a Jet staion and i have been trying to run the car on V-power from shell as this is the only thing that keeps the Emissions light off. Put what i had in the can in the car which just got me to the Shell staion where i put in £20 of V-Power.
The next day the Emiss light came back on and has been on over the weekend . Just thinking if you think using the petrol in the container which as about 6 weeks old would have put on the light. The 02 sensors on the 3.2 seem to have a very fine tolarnce to changes. I am going to run the car and see if it goes out over the next few day with the V-power as this is what happend last time.

What do you guys think.

  

[Kevin Wood]

Your car seems more sensitive than most. Only time I've ever had a problem was on the contaminated fuel we had in February and it has been clear since. It's had all sorts of fuel through it since then, all 95 RON, it's been down to Italy and back without a murmur and had the odd tank from a supermarket when I've been desperate

I wonder if changing between Super and Regular unleaded is the problem in your case?

6 Week old fuel shouldn't have gone bad if it had been in a sealed can.

Kevin

[Marks DTM Calib]

It,s kind of nice in a way to know that i am not the only one that have had this prob.

Ditto!

I could go with the earlier theory about contamination of the sensors and the fact that the post CAT sensors are not getting hot enough to 'burn' this contamination off.

Tempted to buy two new post CAT sensors when the finances allow.... also they are the easiest ones to change!

Take them out and clean them in an ultrasonic bath (jewellery cleaner).....