I have a 2005 Toyota Vitz with 73,000km. It is an automatic 990cc with a 3 cylinder engine (rare apparently!) It has a rough idle when the engine is hot. Started doing this in November, didn't prior. Two mechanics have taken a look and said it isn't right, but have failed to find the problem. They've so far done something with the throttle body, oxygen sensor, air fuel ratio sensor and I've just paid over $100 to have them change the spark plugs (to no avail) then another $100 to have an auto-electrician fiddle and fix nothing. The car shakes like it is about to take off like a rocket whenever I stop at traffic lights, worse whenever the radio/air con/wipers/etc are in use. Ideas!
kazbanz,
Jan 28, 6:23am
First suggestion. Get a new mechanic. Second suggestion. Get the throttle body cleaned out and the air flow meter cleaned up. If your problem goes away then you've cracked it.If it seems to go away for awhile then gets worse again Your AFM needs replacing. -Tjis is assuming all the basics have been covered.Clean air filter,coills all good etc
jmma,
Jan 28, 7:20am
Might pay to get battery and charge rate checked.
incar.,
Jan 28, 7:47am
I had a similar issue, turned out to be the pcv valve
patiki1,
Jan 28, 8:34am
Clueless woman,didnt think there are any.
kazbanz,
Jan 28, 8:38am
Not doubting ya for a second but the OP's mechanichasn't even done the stuff I suggested (the simple stuff)
andy61,
Jan 28, 8:48am
Are you sure its a 3 cyclinder!,or does it feel like one.Has the car has regular oil chages! sometimes the VVTI system can get blocked up and cause rough idle if oil changes are neglected.
incar.,
Jan 28, 9:06am
Lols probably haven't even scanned it, she has mentioned they have done something with the afm
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