When I start the engine everything runs fairly smooth for the most part, but there is a slight vibration felt, nothing major. If I turn the A/C on the car begins to vibrate a bit more, heavy enough to become uncomfortable to drive. When the car goes into drive there is a slight increase in the vibrations again, but when accelerating the vibration becomes non existent. If stoped at a stop sign or stop light the vibration returns and is consistent with a pulsing pattern. When the car is parked in idle and the A/C is on there is a heavy vibration and the RPM fluctuates between 450 and 600. I have had the engine mounts replaced and brackets, I changed the water pump, spark plugs, and did an injection cleaning as well. The car drops its RPM almost to the point of stalling when anything electrical is used and the car is parked. Any help would be appreciated. Thanks
Sometimes I get the feeling no one reads entire problem/post or doesn't know how to diag a customers concern...
Regardless, from what you are describing you have a charging system problem. Your getting harsh load vibrations, and when moving it goes away because the alt is recharging battery due to faster belt speed.
I’m happy to assist further over the phone at https://www.6ya.com/expert/josh_8f8ad0a8f7e0e6d3
If the car is running does it have the check engine light on? if yes what is the code if no then check to see if temp sensor is reading the right temp by plugging in a scanner that can read all data to give you an accurate reading... if it reads wrong temp it can cause running issues
SOURCE: Why does my car vibrate and noisy at red light and stop sign
Maybe it's the transmission itself. check it.
SOURCE: F150 2003 5.4L Vibration throughout truck with acceleration
When you say "throughout" that would indicate that it is coming from the rear of the truck..
There could be a number things causing this..
It could be a bad tire or a broken belt on a tire..
A test for this is - roll along at 3 miles per hour.. If you feel a wobble - that is probably a broken belt in a tire..
Or maybe even a bent axle..
It could be a bad universal in the drive shaft..
It could be a broken shock/strut or mount or both..
Best of luck !
SOURCE: dodge neon sxt 2003 engine vibration while increasing rpm
Well i have s similar sound but im not sure if its the same. For me i just found out that its a bracket i never put back on. The motor mounts if you get them at an autozone which gives you a life time warrenty runs about 30 bucks and theres only 3 upper passenger and lower passenger and one on the drive side which is connected to the transmission. there is some what of a 4th one but that one never really goes bad and its the worst one of them all. Its located in between the 2 on the passenger side you have to move the engine outa the way to get to it and take it out. Im not sure if autozone or any place sells that one but like i said its probably still ok. i have 170000 mile on my neon and the mounts still good and trust me my cars been through alot and i mean alot its flied over cannels anyway yea so thats what i know about the mounts im not sure why the noise though. I say check the motor mounts if any are ripped change the ripped ones all at once trust me. Oh and i didnt the change on the motor mounts myself so it was free there not hard to change the first 3 i mean maybe the transmission one too all you need is a jack underneath it to keep it leveled right.
615 views
Usually answered in minutes!
I'm beging to lean towards the alternator. When I start the engine it reads 14 volts on my dash gauge but once i begin to use the a/c it drops significantly and that is when the vibrations start to become more heavy. I havnt tested it yet with a voltmeter but my gauge looks like its falling in the 12 - 13 volt range. Any ideas? and no there is not check engine light.
×