What would make a car misfire, shake and jerk after coming back from mechanics?
As a mechanic for many years I could tell you that there might be a couple of issues. First thing I would do is a visual check. check and see if maybe a spark plug wire might of been knocked loose. That is pretty common issue after doing any work under the hood. Not just look though, You will want to push each spark plug back on the distributor. You will want to make sure the wires are pushed on the spark plugs. If you do this and still have the issue I would at least call the shop and ask them if they might have done something wrong. Some honest mechanic shops will actually admit to things that they might have been done. Some will NOT. If you do notice a wire off, or something that can be easily fixed I would still call them and let them know what you have found. Some shops will even look at it for you, and let you know what they find. I am willing to bet that it is something simple. I hope this works. and good luck with everything
What would make a car misfire, shake and jerk after coming back from mechanics?
It may be time for some new spark plugs and spark plug wires. Maybe one of the spark plug wires got loosened during the service. Don't ask for a %26quot;tune-up%26quot;. Simply ask them why the car is now running rough etc and let them diagnose the problem. But they may claim you now need some %26quot;tune-up%26quot; work. Then you might start by first having the plugs and wires changed if that's part of what they recommend doing. I'd stick with the Toyota dealer.
http://www.aa1car.com/library/tuneup1.ht鈥?/a>
The fact that it ran fine when you took it back from the dealer and drove it home leads me to think that it may not be related to the check up.
Frustrating for sure, but don't get too upset until you take it back and find out what's causing the new concerns.
Take it back in immediately so you can resolve these new issues.
Bad carma!
Get it?
Car-ma!
This is probably silly, but perhaps they messed with your timing advance (if it still has a mechanical one) in an effort to tune it in a bit better and forgot to tighten down one of the screws on the distributor. Driving it home, may not have disturbed the engine enough to loosen it, but starting it back up might have caused it to move a little, throwing your timing advance out far enough to cause it to misfire.... or it could be coincidental. :)
...But this is the only thing that I can think of that might account for your lack or power and the shaking and jerking. Again, my 85 Honda Accord did exactly the same thing, but that was because I just did the head and the timing belt was off a tooth. Oh, you could have slipped a tooth on the timing belt, as well... a bit more expensive fix.
If it has a mechanical timing advance, you just look under the hood (car off, of course) trace the plug wires back to the distributor and see if it is loose... but be careful not to disturb it any further, if so.
Either way, get it back there and have it looked at. And good luck with it. :)
