Joinaman Posted July 28, 2020 Share Posted July 28, 2020 Hi there posting for a friend who has and oldish Vios, petrol, manual, high mileage When driving below about 65 kph the car keeps juddering, but when speed increases beyond about 65, the juddering stops The juddering is almost like when in too high a gear and trying to pull away, ready to stall, but not so bad as that He has taken it to his local garage, who checked, then said , no can do, but would not say why Took it to second small garage, same reply Was thinking it may be better to take it to the Toyota main dealer for repair ? Would appreciate and advice and possible reasons for the juddering, and your views on Toyota main dealer garage would be good to know the problem and explain this to the garage, rather than a vague, "juddering" Neither of us know much about cars, and not really worked on a car for many years, in the days when you could actually see what you were doing and did not need special tools or computers Thanks for reading and any advice would be much appreciated Link to comment Share on other sites More sharing options...
NanLaew Posted July 28, 2020 Share Posted July 28, 2020 12 minutes ago, Joinaman said: He has taken it to his local garage, who checked, then said , no can do, but would not say why Took it to second small garage, same reply Pretty ominous when two local mechanics can't even say what the problem is. Is she pregnant or something? 1 Link to comment Share on other sites More sharing options...
tonray Posted July 28, 2020 Share Posted July 28, 2020 It could be something as dire as transmission failure or something as simple as tire/wheel problems. How is tire wear....very uneven, when is last time you had wheels balanced ? 1 Link to comment Share on other sites More sharing options...
lemonjelly Posted July 28, 2020 Share Posted July 28, 2020 Sounds like it’s the clutch, might be contaminated or just worn. Not too expensive to replace Link to comment Share on other sites More sharing options...
Joinaman Posted July 28, 2020 Author Share Posted July 28, 2020 14 minutes ago, lemonjelly said: Sounds like it’s the clutch, might be contaminated or just worn. Not too expensive to replace thanks for the replies I thought it might be clutch, but would this correct itself when increasing road speed to about 70 kph and still accelerating ? Electronic ignition, or carb ? Link to comment Share on other sites More sharing options...
Joinaman Posted July 28, 2020 Author Share Posted July 28, 2020 41 minutes ago, tonray said: It could be something as dire as transmission failure or something as simple as tire/wheel problems. How is tire wear....very uneven, when is last time you had wheels balanced ? Not sure, but he keeps it well serviced, so i assume the tyres are ok But its not balance, No wheel wobble just judders . Not sure how wheels could cause this sort of juddering Link to comment Share on other sites More sharing options...
VocalNeal Posted July 28, 2020 Share Posted July 28, 2020 Initially I'm going with CV joint(s). The friend needs to drive at 65 kph in all gears and see if it happens in all gears. Ie at what engine speed vs wheel speed. 1 Link to comment Share on other sites More sharing options...
Popular Post transam Posted July 28, 2020 Popular Post Share Posted July 28, 2020 Difficult to advise without sitting in it. Could even be an ignition/injector fault. I would take it to Toyota for a test drive and/or get it plugged into their diagnostic thingy. PS. I thought I had a CVT trans fault, it was playing about when hot, took it to Suzuki, they test drove it and said it was fuel system butterfly (can't think of the name), scratched my head, they unbolted stuff, removed it, took it to the cleaning machine, put it back on, plugged it into the diagnostic thingy to re-adjust it (I heard a few clicks inside the throttle housing) fault cured...350bht.....???? 2 1 Link to comment Share on other sites More sharing options...
Popular Post rumak Posted July 28, 2020 Popular Post Share Posted July 28, 2020 take it to Toyota dealer 3 1 Link to comment Share on other sites More sharing options...
Joinaman Posted July 28, 2020 Author Share Posted July 28, 2020 (edited) 30 minutes ago, VocalNeal said: Initially I'm going with CV joint(s). The friend needs to drive at 65 kph in all gears and see if it happens in all gears. Ie at what engine speed vs wheel speed. thanks i'm sure it was doing it in all gears, below 65 kph, but stopped when going at higher speeds He took me to town last week, 45km and nearly drove me crazy with the constant juddering and gear changing, cos he hates going fast Would CV joints cause juddering ? Stop/start type of juddering, rather than side to side wobbling Think it best to just go to Toyota and let them take it for test drive, hopefully they will find and cure the fault Thanks again Edited July 28, 2020 by Joinaman additional words 2 Link to comment Share on other sites More sharing options...
Kwasaki Posted July 28, 2020 Share Posted July 28, 2020 High gear low speed. Link to comment Share on other sites More sharing options...
ktm jeff Posted July 28, 2020 Share Posted July 28, 2020 9 hours ago, transam said: Difficult to advise without sitting in it. Could even be an ignition/injector fault. I would take it to Toyota for a test drive and/or get it plugged into their diagnostic thingy. PS. I thought I had a CVT trans fault, it was playing about when hot, took it to Suzuki, they test drove it and said it was fuel system butterfly (can't think of the name), scratched my head, they unbolted stuff, removed it, took it to the cleaning machine, put it back on, plugged it into the diagnostic thingy to re-adjust it (I heard a few clicks inside the throttle housing) fault cured...350bht.....???? TPS. Throttle position sensor clogged with recycled crankcase vapors. Link to comment Share on other sites More sharing options...
lemonjelly Posted July 28, 2020 Share Posted July 28, 2020 9 hours ago, VocalNeal said: Initially I'm going with CV joint(s). The friend needs to drive at 65 kph in all gears and see if it happens in all gears. Ie at what engine speed vs wheel speed. CV joints make a very noticeable clacking sound when the steering is on full lock when they’re dying, you can test that in a car park. I doubt that the CV joints are causing this though 1 Link to comment Share on other sites More sharing options...
lemonjelly Posted July 28, 2020 Share Posted July 28, 2020 Drive the car, when it starts juddering, press the clutch in, if it stop juddering, then I’d say it’s clutch related Link to comment Share on other sites More sharing options...
ukrules Posted July 28, 2020 Share Posted July 28, 2020 I had something very similar with an automatic Jaguar a good few years back, turned out a couple of the plugs were misfiring under certain conditions - it only happened when I was driving at certain speeds. If I drove slower or faster there was no problem. New coils and plugs sorted it. Probably very different cars and engines though. Link to comment Share on other sites More sharing options...
transam Posted July 29, 2020 Share Posted July 29, 2020 13 hours ago, ktm jeff said: TPS. Throttle position sensor clogged with recycled crankcase vapors. No, the actual butterfly had a build up of what looked like carbon around its edges, I assume when stuff got hot there was expansion that didn't allow the butterfly to completely travel, so the idle rpm couldn't be set by the ECU, was overridden by a mechanical prob. The one guy that spoke some English pointed out that this prob (pointing at the carbon build up) can/does occur with these engines at 90kkm+.... Link to comment Share on other sites More sharing options...
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