MY96 Scooby has developed a misfire/hic up at 1500/1800 rpm,
although not normally a problem ( because it doesn't spend a lot of time down that end of the rev band ), it can be a pain in traffic. The car has done about 100k, and has been well serviced. The problem doesn't appear to be on one specific cylinder ?! Can some-one point me in the right direction please. Len |
I think I have a similar problem, only happens after cars warmed up. Started after getting a dealer to change the timing belt and plugs, dealer fitted a replacement set of plugs but no improvement, they claimed after having the car for 3 more days a solenoid or valve was fubared and replaced that.. guess what, improvement but still their. After a close inspection myself found the insulation on a coil pack underneath the rubber seal to be cracked, will replace that and see what happens. The valve thing replaced was on the off side suspension strut, a little pipe(vacumm?) had snapped off.The car is a MY96.
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I had exacly the same problem after a cam belt change, turned out to be a crack in one of the HT leads, just taped it up for now and instantly solved the low rev hestitation.
Cheers Steve |
That problem sounds very much like the knock sensor problem. What happens is the knock sensors are a wee bit too sensitive and hear to many noises they shouldn't in the engine, what the hesitation is will be the ECU retarding the timing.
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