Right, this prob has been going on for a while now.

 

At slow speed all seems well, round town etc. On the motorway everything is ok, untill I put my foot down. Then it coughs, splutters and generally doesnt seem to want to do much, sounding very rough at the same time. Now this doesnt happen all the time, sometimes it will do this, sometimes it'll work properly, sometimes it'll do a little of both :confused: Also if I keep my foot to the floor, it will build up slowly, but then the cat overheat light will come on. If I gently build up the preasure on the peddle, then I dont seem to have a problem :confused:

 

It was put on tony's ConZult at the last midlands meet, and it looked fine, it was sugested to clean the throttle bodies, which I finally got around to doing last Thursday. Now this seems to have improved it a little, but difficult to say for certain, as it is an intermitant fault.

 

So I'm thinking that the vibration of the engine whilst trying to accelerate, is vibrating a coil pack connector and stopping that spark plug from fireing, maybe??!! Coil packs, spark plugs or anyother connector hasnt been off yet. Also the Jap limiter is still on.

 

Any ideas guys??

Hey dave, if you dont get any replies b4 you get your problem sorted can you let me know asap what it was as ive got the exact same prob on mine?

dave i lost th connection to one of th coil packs about a month ago on a trip upto huddersfield (probly just popped off on a bump), car still picked up speed (obviously not as quickly) but it did pretty well, th only bad thing that happened was alot of vibration thru th whole car at low revs. at high revs u cdnt notice. hope tht helps

 

yaseen

Yep, you're dropping the spark to one of the cylinders - check the PTU (both connectors, especially the left hand one) and the coil pack connectors....

Yep, you're dropping the spark to one of the cylinders - check the PTU (both connectors, especially the left hand one) and the coil pack connectors....

 

 

Thanks Andy, I thought as much, though it was best to get one of you 'Experts' :bow: just to confirm what I was thinking :D :duffer:

 

 

Hmmmmmmm, I see a new list of things to do forming,

 

Get new Coil Pack connectors,

Get new Injector connectors,

Get new Spark Plugs,

etc, etc, etc............................................................. :D

What's the PTU and how would you check the connectors to it - man you can tell i'm a vigin to all this!:rolleyes:

Ignor that last post - i've just checked the search and found a picture of the engine layout. :dance:

Ignor that last post - i've just checked the search and found a picture of the engine layout. :dance:

 

Slim, your learning mate, thats how I found out a lot of stuff on here. The best thing is, even if you dont know something now and have to ask about it, one day you might find out somthing and let others know about it. Thats the beuty about this place, everyone can input their bit :D Untill I brought mine at the end of last year, I didnt know that much that was specific to the Zed, but I'm learning now, thanks to all the help I've received from the guys on here.

 

Now cough-up your £20 :D