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[Wayne]

Guys - was driving home tonight and all of a sudden, when i accelerated in various gears, the car started "pinking" sort of like when you run out of fuel lol,  any ideas what it could be?
i have just spent £480 on getting the car through its MOT and got new tyres etc
i hope there's not more surprises 2 weeks after getting all that done, Aaarrgghhhhhhhh

[TheBoy]

Paperclip results?

[Wayne]

will do it tomorrow night mate, bloody freeeeeezing out there lol

[Wayne]

Just went outside and done paperclip test

i get 3 flashes and then one more flash (obviously the no RPM signal) my engines off lol

and then it flashes once, and then twice, which i presume is error code 12?

trouble is, there isnt a fault code for 12 is there?

is this my pinking problem?  or could it be timing belt, spark plugs or someat else more serious? head gasket? (headless chicken mode lol)

[Andy B]

Just went outside and done paperclip test

i get 3 flashes and then one more flash (obviously the no RPM signal) my engines off lol

and then it flashes once, and then twice, which i presume is error code 12?

trouble is, there isnt a fault code for 12 is there?

is this my pinking problem?  or could it be timing belt, spark plugs or someat else more serious? head gasket? (headless chicken mode lol)

Code 12 means the start of the codes 

[Wayne]

So much for fault codes then

my car pinks when i accelerate, but doesnt do it when engines cold, after driving it for 10 minutes and i approach a roundabout slowing down, and then accelerate in 3rd, 4th or 5th, the car feels like its misfiring, feels like its running out of petrol, even wheres half a tank in her

just have no idea what it is

[Darth Loo-knee]

Which engine do you have Wayne? If you can put that info in your profile mate it will help out in the future too.

As for Pinking, does the car feel down on power at all? The knock sensor is like an earphone bolted to the engine to listen for Pinking in the engine then the ecu will alter accordingly. In the older cars the distributor was advanced or retarded.
I had something similar, but I had a fault code plus the car was down on power.

Did this problem start after putting fuel in?

[Wayne]

sorry mate, my car is a 1998 S Reg 2.5 Petrol V6 Engine

i would say its only down on power when you try and accelerate, but she`ll still hit 110mph, but feels "lumpy" lol
i have tried BP Ultimate fuel for 4 weeks and it makes no difference, dying to get it sorted as its my drive to work 5 days a week
i do 60 miles to work each day there and back

i used to have the EML light come on quite a fair bit, and i did get a knock sensor code if i remember correctly
but for the last 4 weeks, the EML light hasnt come on, but when it did... you could feel the engine doing the same thing as it is now, im just pissed off as im getting no fault codes and if it is the knock sensor, which side of the car? i thought there were 2?  is it a big job??

id take it to a garage but dont know if there rip me off and make stuff up to scam me for my hard earned cash

[Darth Loo-knee]

There are two knock sensors mate yes. They are to hard to either. But unless you know the garages I personally take my car to one.
We really need to find the problem then fix it, not be guessing and putting parts on willy nilly. Where do you live? Wondering if anyone near you has a tech2 or similar?

[Wayne]

I Live near Faringdon in Oxfordshire
i dont mind driving to someone in Wiltshire or Oxfordshire, love to get my beast fixed 

[Darth Loo-knee]

Entwood is a helpful guy who may have a code reader that way. The Boy has a proper Tech2. Maybe worth PM ing them see if they could possibly help after Christmas .

[Entwood]

Willing to help and live near Swindon, but not sure if my OBDII reader for facelift will work on the 2.5 ?? Is that OBDII  ?? If it does I can do limited live data readings.

Time might be a problem if you need it fast as we are going away 27th - 3rd. After the 3rd is no problem I'm not back at work until 9th.

HTH

[Wayne]

Hi matey, I can wait, I'm back to work on 28th, but will just keep on driving her, hope it's ok doing that lol

[Andy H]

Is it actually pinking? or could it be missing and then popping/farting/backfiring in the exhaust.

I once spent ages tracing a loss of power under hard acceleration which was cured by a set of new spark plugs.

Try pulling your plug leads and checking the state of the plug wells for oil or signs of water or rust.

If the plugs have done 50,000+ miles I would put some new ones in. I was shocked at how quickly the electrodes burn away in a V6.

[Andy B]

..... I was shocked at how quickly the electrodes burn away in a V6.
 .......

So was I when I removed the 'new improved' quad electrode plugs from my 3.0 last summer after around 25000 miles. I replaced them with the 'proper' twin electrode plugs