Harmonic balancer?
- Thread starter 86GT
- Start date
ok, its hard to do this online but ill try. first I or we need to know everything that led up to this point, what did you do or happened right before the vibration started? this is very important so be specific please. next, sart the car and watch the balancer while reving the motor, does it shake or wobble? if it does its either a bad new balancer or the crank snout is bent. If it doesnt wobble then you look at the other end of things, was the clutch replaced as well? I myself balance the clutch and plate when I do a build for someone, yes I have seen some that were way out and im a bit picky so if it spins it gets balanced. as for in the motor, if it is really that bad you would have to mess up pretty bad on the build to get a bad vibration at just 3000, stock motors are off 5 or so grams on the balance so unless it wasnt balanced at all or you really hurt the crank the problem shouldnt be internal. If the problem was ign. or fuel or valvetrain related you would either feel it across the board or the motor would run bad at and above 3000 rpm so you need to tell us, does the motor pull smooth at and above 3000? besides the shaking does it feel like it doesnt want to go past that mark ? And the last thing for now is never assume anyone has or will change parts correctly or with new stuff, if you did not see it done yourself then it did not happen. terrible I know but I have plenty of people come in here with "new" motors and trannys only to find its not close to what it was suppose to be, believe me I have stories lol.
well i was on the highway going home from work with a friend of mine we were dicking around in traffic speeding dipping in and out of traffic after i slowed down for traffic and tried to give gas thats when this happened.clutch is a new spec 3+...motor pulls really strong until 3300-3500 and wont go past 4k...no i was there through out the whole process i never leave my car unattended if its getting done no matter how well some1 does it or how well i know the person..
ok, its not likely a balance issue or internal then, even an unbalanced motor will rev it may come apart but itll rev lol. if the motor cant go past 4k then it would be ign., fuel or valvetrain related. at this point I would pull all your plugs and see how they look, that will tell you everything about the way a motor is running.
dont ever use bosch platinums in a ford motor, in fact dont use platinums period. we have been having alot of problems with autolite platinums lately(took a batch of 20 plugs to come up with 5 useable ones). dont know why, but they just dont like platinums lol. try using a reg. set of AC Delco plugs if you have stock heads use r45ts if not use a hotter plug that what you have been using. let me know how that works.
no matter the plug brand it didnt make a diff and no cats straight pipe..i really dont think that there is anything more to do besides opening up the motor???? im so stressed out over this its just pissing me of cuz i did so much and still cant find the problem... so please if anyone has any more suggestion please let me know
its not the brand that matters its the type of plug. you are trying to use platinum which you shouldnt, if theyre black then theyre fouled and you either need to go up one or 2 heat ranges or you have fuel issues. the cheapest check is to use an ac delco r45ts plug gapped at .045 if you have stock heads. opening the motor will do nothing but waste your money and get you more annoyed. If you really get upset you can drive up here and Ill have it fixed in a day, im an hour and 15 from you or when im coming down to the bronx you can meet me and ill check it out, but I havent been going down lately.
Quick question for you. You need a friend for this, when sitting in a driveway in neutral and you're rev up your motor over 3000 rpms, is the any strange or loud noises coming from the motor, is the motor moving around, is there anything banging or wobbling out of control? Do you or any of your friends have a lift that you can check underneath the car. Start looking from the electric fan back threw to the transmission checking everything in sight. I'm old school, lets erase all the easy stuff first before we start tearing the motor apart. Could save you a lot of money.
I would think the shop that did the work since the problem as well as anyone else would have checked the timing but I really should know better lol. That is a good idea to check, if you feel up to the drive im in walden just outside newburgh. if you want to come up just give me a call and let me know youre coming and ill give you directions. 914-384-9963