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Misfire/general running probs. Help!!!!!


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Guys,

ive had my 1998 VR6 Highline for just over a month now and its been trouble free!

A couple of days ago suddenly the tickover started dropping, almost cutting out until the car corrected itself. I changed the plugs but it started running worse, hardly holding a tickover and it would'nt pull past 4k rpm (fun zone.....lol!). I changed the leads and took it for a quick spin getting it up to temp and it seemed perfect again.

I parked the car up as usual then 2hrs later drove the car to work and it was awful, coughing, misfiring, spluttering all over the place. I tried to accelerate away from a crawl in 2nd gear and nothing.......it was like I was trying to pull from standstill in 5th, literally that slow! the car was jerky under steady throttle almost shaking my teeth out.

I parked her up for a bout 3hrs before I took it to my local VW garage in Wombourne (west mids) and on route the car was fine again (idling fine, pulled sweetly past 4k rpm) I got a call from the garage this morning saying the car was showing every ECU fault code under the sun but they coul'dnt find anything wrong and the car drove perfect for them on the three seperate occasions they tried it. They said the plugs and leads were fine.

The mechanic said there was no difference between the car being cold or up to temperature. He said on the VR6 the wiring that comes from the loom into the engine sometimes moves with the engine under load and this may cause breakages in the wire. (even though the fault is intermittant???.....)

Apart from the fault codes (which they've now cleared) they can't find a thing wrong with it physically.

£85 well spent.....

Nathan

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Picked the car up today from the VW garage and it still ran awful. It was barely holding tickover, spluttering, black smoke out the exhaust.

I rang the garage again and they assured me it was'nt plug/lead/coilpack related.

Don't know why but I decided to check the new leads again.......I found 5 out of 6 were'nt 'clicked' down properly, so with a long screwdriver I 'clicked' the leads down.

Guess what? Perfect idle! I took the car out for a drive for about 30mins (high speed, low speed, in traffic so the fan came in and out and it was pefect never missing a beat!)

Fingers crossed its cured but im miffed at paying £85 to the VW garage when it seems all they did was have a look under the bonnet and check the ECU codes.

Nathan

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Just be carful when using a screw driver, you should be using the plug removal tool thats on your bonnet prop to click the plugs into place - otherwise its very easy to damage the leads.

I've not known a single VR6 thats suffered from a broken wire on the engine loom in the entire 6 years of running this club. personally I wouldnt take it back to that garage again :) most of these VW so called 'specialists' dont have a clue about the VR6 engine.

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