Rough idle after high speed

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Top of pagePrevious messageNext messageBottom of pageLink to this message   By johnradzik on Tuesday, June 05, 2001 - 04:58 pm: Edit

i have a 96 disco w/56k and after driving at high speeds[80/90]coming back into town there is a shake in the truck.the idle doesn't surge.stays steady at 800,but there is a noticable roughness.any advice other than slowing down.

Top of pagePrevious messageNext messageBottom of pageLink to this message   By johnradzik on Tuesday, June 05, 2001 - 06:56 pm: Edit

land rover dealer said could possibly be build up on yhe exaust valves which is a 1700.00 repair.can anybody save me 1700.00

Top of pagePrevious messageNext messageBottom of pageLink to this message   By Blue Gill (Bluegill) on Tuesday, June 05, 2001 - 07:58 pm: Edit

build-up on the exhaust valves? what the hell does that mean (other than $1700 in the dealer's pocket)?

Top of pagePrevious messageNext messageBottom of pageLink to this message   By johnradzik on Wednesday, June 06, 2001 - 08:17 am: Edit

i have no idea,i'm sure your right.it's a new dealership so they have to pay the rent.does anybody have an issue with your abs light coming on when you intially start up in the morning,but when you turn the rover off and start again no problems until the following day.

Top of pagePrevious messageNext messageBottom of pageLink to this message   By Steve (Oz93discov8) on Wednesday, June 06, 2001 - 09:20 am: Edit

Try pulling out a few spark plugs and checking for carbon build up on the centre insulator. Could be leaky injectors which cause an over rich mixture - this can allow the voltage to track to earth rather than jump the spark gap. Either that or get the exhaust gas analysed at a carby/fuel injection workshop.

Top of pagePrevious messageNext messageBottom of pageLink to this message   By Blue Gill (Bluegill) on Wednesday, June 06, 2001 - 11:20 am: Edit

do you mean abs light coming on when you start engine and then STAYING on? If so, try checking abs sensors. If it is an intermittent problem, may just be be loose wire or bad contact somewhere...

Top of pagePrevious messageNext messageBottom of pageLink to this message   By johnradzik on Wednesday, June 06, 2001 - 12:20 pm: Edit

a little something like that.the light will generally go out after 8mph ,but a few seconds later it will come back on.it also did it under heavy braking in the snow.i thought the sensor may be frozen or covered up,but that's not the case.

Top of pagePrevious messageNext messageBottom of pageLink to this message   By Eric N (Grnrvr) on Wednesday, June 06, 2001 - 01:52 pm: Edit

The ABS light should stay on from the time you start the Disco to the time it hits 5-6 miles an hour. Once you hit 5-6 miles an hour the light should go out and stay out until the next time you turn the Disco off and then re-start it in which the process will repeat. The ABS tests it's self every time you first start your Disco that's why the light stays on till you hit 5-6mph.. If it doesn't go out or goes out and then comes back on while you are driving then you have an issue.

Top of pagePrevious messageNext messageBottom of pageLink to this message   By Jon Williams (Jonw) on Wednesday, June 06, 2001 - 02:40 pm: Edit

...or so I'm told. But my ABS works whether the light's on or not.

Top of pagePrevious messageNext messageBottom of pageLink to this message   By Tate on Thursday, June 07, 2001 - 10:12 am: Edit

The Disco has an independent 4 wheel anti-lock system, meaning that each wheel can be controlled seperately. You could conceivably lose anti-lock control over one wheel and still have it on the other three. You'd think ABS was working because you would still feel the pump kick in, but in reality, it may or may not be acting on all four wheels. Unfortunatly, about the only thing that the DIY can do to the DI abs without access to the computer codes is reseat the sensor, adjusting the air gap. With most anything else, it's cheaper to have the shop diagnose it.

Top of pagePrevious messageNext messageBottom of pageLink to this message   By Jon Williams (Jonw) on Thursday, June 07, 2001 - 04:34 am: Edit

I see. Yeah, I was gonna try reseating one or two of the "suspect" sensors but I just haven't had time.


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