Not quite a misfire but a defintie stuttering under light load

[Djw John]

As the title says really!

But to give a bit more info driving back home today the car (ph1 172) was spot on for the first part of the journey (Chatham to Edinburgh) and running really well but after stopping at the toll road services it started to fell like it was stuttering at normal speeds. If you floored it then it pulled fine.

After about 70 miles or so at 75mph the stuttering got noticeably worse and the exhaust emissions light began to flash. So I did what any man would do and put the foot down a wee bit and taht switched it off until I once again sat at about 75mph. This happened a few times so I slowed it down to 60mph and whilst the light didnt come on for the remaining 240 miles it just doesnt feel right under light load. Especially when going downhill where it almost kangaroos if you touch the throttle lightly.

My initial thoughts are coil pack, or lambda sensor or TDC sensor but which one is most likely?

Car has got 95000 on it and has been serviced fully and on time.

Just like to add that Pete who sold me the car did so in good faith and was very open and upfront about any known niggles so I dont want this becoming a blame game! He couldnt have known this was going to happen. And the savings I made by sitting at 60mph (46.5mpg for 480 miles) will pay for the repairs!

Cheers
John

 

[Beef-Mc]

For what car?

 

[Djw John]

D'oh! PH1 172

 

[hen172]

The same just happened to my car on the way to work, that's why i'm home now looking this up, did you find out what it was?

 

[matt.lund]

happened to me on a old car i had, turnedout to be either ht leads or the spark plugs

 

[mr bognor]

Coil pack ?

 

[Djw John]

Think I'll swap the one from Daves car and try it again.

Disconnected the battery overnight and it seems better today but havent really run it very far yet.

BTW, I realise the spelling was shocking, I was pretty tired!

 

[tandino]

Think I'll swap the one from Daves car and try it again.


BTW, I realise the spelling was shocking, I was pretty tired!

I think we can let you off for that!,
Hopefully the ECU reset will sort it John.

 

[Martin_172]

probably coil pack, causing car to missfire and then that causing lambda to throw a wobbley!

 

[cliosportap]

coil pack ht leads and plugs
check these
i had the same problem and it wa ht leads

 

[TimR26]

Try cleaning the tdc sensor first.

 

[Djw John]

from what Ive read it appeared teh TDC sensor is more of a starting issue but Im gonna clean it anyway, good practise and may prevent future problems.

I'll get on the coilpack, HT leads and plugs case then. When it isnt snowing.

Cheers

 

[MikeB]

I would check the spark plugs mate and ht leads

 

[Djw John]

Thats tomorrows plan

 

[Djw John]

Just in case anyone looks at this after searching I've fitted a new coil pack and ht leads and it appears to have solved the issue but I'm still to tkae it a long journey to be sure.

Cheers for the advice guys

 

[damo2008]

yeh same problem was with mine was a faulty ht lead all the cables looked ok but there was a small split in it which was causing it to spark crap under little load but run spot on when under load sorted out though after garge had replaced the injectors thinking it was them

 

[ianeire]

How much did the leads and coil pack cost, John?

 

[Djw John]

I get trade dicsount mate at my local auto factors so I paid £66 plus VAT which I thought was still a lot but full RRP was £105 plus VAT!