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Did you replace the sway bar bushings and get the sway bar mounting bracket bolts good and tight? This sounds like something in the steering/ suspension system.
Did you replace the motor mounts (1 on transmission cover plate, the other under the harmonic balancer on the subframe?
Double check all your suspension linkage bolts too…Good luck…
Did the problem exist prior to the engine swap? Did you have to monkey around with any of the stearing or suspension components during the engine swap? Does the problem present itself when the vehicle is coasting in neutral? Does the problem appear to be more pronounced when you get on the gas hard?
only thing that got replaced was the motor a new front tires no it drove fine with the old knocking motor when i drove it home after buying it found out one of the font tires where not straight with the other im replacing the one tie rod end it way a little lose it not firing number 3 but it has spark found that out the hard way i got zaped put in fuel injection cleaner hopeful that fixes it
Are you saying that the engine is missing out so bad that the front end of the vehicle is shaking when the car is not moving, or that the shaking occurs when you are driving down the road. The question is whether it is the misfiring engine that is causing the shaking, or is it the car’s interaction with the road that is causing the shaking.
I know we’re peppering you with questions, so please take no offense. It’s just hard to decipher things sometimes without being there. If the new engine is causing the shaking to this degree, it will probably (or has already) set a check engine light diagnostic trouble code. If so, please let us know the code. I would check everything that “holds the engine in place,” the 2 dog bone mounts at the front of the vehicle, both engine mounts (previously described). Be sure to check all of the suspension related fasteners, from tie rod ends, sway bar bushing, power steering rack and pinion unit mounting bolts, etc.
If the vehicle is shaking at a stand still, you can rule out the tires and quite possibly the suspension components too (tie rods, sway bar, etc.,)
It could be a bad vacuum leak resulting from the engine swap procedure. A gasket such as around the plenum might be leaking and causing this shaking,ignition problem, something left unplugged etc.,
One question for you this time… Does the shaking continue throughout the driving range and all rpm’s or does it disappear at certain speeds?
One way to test the tires, is to get the car up at a good speed and carefully switch into neutral. If the shaking then continues, the tires are suspect. Being that you purchased new tires, it could be as simple as a tire out of balance. This happens regularly…
Thanks for the update. Keep us posted
If it hasn’t been that long since the engine was installed I would recommend taking it back to the place where you had the work done and describe the issues to them. Otherwise you’re going to inherit those problems for yourself. These articles may help you better understand the issues you’re having.
http://www.ericthecarguy.com/faq/determining-the-causes-of-vehicle-vibrations
http://www.ericthecarguy.com/faq/solving-automotive-idle-problems
Good luck and keep us posted on your progress.
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