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Seriously though, it is a pain but also consider it's there for more than just safety. When these vehicles are engineered, they design them for specific use. With most trucks, they are designed for hauling stuff, instead of "hauling A**". If you see the "Overspeed" warning, then you are pushing the mechanical parts of the vehicle beyond what they were designed to do. I'd hate to see what would happen to a Tahoe if it's drivetrain failed at over 120 MPH. Wouldn't be pretty.
That of course doesn't mean you can't buy aftermarket parts to push that envelope higher, which a lot of people do. Just a bit of insight, I hope it helps you understand why you see this. Have fun!
Hi there I am a mechanical technician engineer I fix the things normal mechanic cant! I fix mechanical and electric problem no matter what it is the problem with it!!!I I am very good and bless in my work I am 5gen mechanical engineering technician never have a problem I can not fix when last time you tune up the transmission
if it is an EFI engine then the parts that you will need for a tune up will be indicated in the fault codes
The ECM of the vehicle continually tunes the engine while running ( around 100 times a minute) and as long as all the sensors are within parameters ,the engine will remain in tune
any sensors that are failing will leave a fault code and just because the engine light is not on doesn't mean that there are no fault codes recorded
basically "good mechanics do not fix what isn't broken"
please tell me in this tune up you had new spark plugs put in? if check engine light is on there are some stored codes those will give you the suspect cylinder(s) check to see if you have plug wires if not there will be a coil for each cyl. pass. side of motor starting in the front working to the back or firewall cyls are 1,2,3,4 driver side same front to back 5,6,7,8 codes will be PO301 cyl 1. PO302 cyl 2. etc. get the code find the correct cyl. unplug little connector u will need a 7mm socket to remove the bolt holding the coil in place then pull up on the coil and boot.... if u have plug wires get the code find correct cyl and follow plug wire to coil pack in front of engine there will be two one on each side in front of engine...
If the black smoke is discharged from the tailpipe then the engine is running too rich and the engine needs a tune up. If white smoke is discharged from the tail pipe especially when driving off at the stop lights then either the valve guides or the piston rings are worn then the engine needs these parts replaced and you need a mechanic to fix the engine. I suggest you get a quote first.
For just a standard maintenance tune up you will want:
Oil and filter
Plugs and wires
If you want to get really nitty gritty you can get a transmission filter and some tranny fluid.
And I usually run a can of "Sea Foam" through the gas tank for cleaning the injectors
If you go into Advance, or Auto Zone they will get everything I listed above for you. Be sure when doing the plugs and wires that you replace one at a time "wire and plug" if you pull them all off at the same time you won't know where they go when you are ready to put the new ones on.
The only thing to be weary is make sure to as if your vehicle has an exterior trans filter. If not dont worry about the trans filter unless you are mechanically inclined and can take the pan off the transmission and replace the gasket, drain the fluid etc. The internal filters and a flush should be done by a mechanic.
MMmm plastic what injectors .. you might need to remove the fuel rail and intake plenum to work ... but theres nothing plastic down below the manifold... if the wrong amount of fuel in an OBD2 car or truck burns too much fuel the oxygen sensor reads it and the computer automatically cuts or leans fuel to the motor through the injectors for the green people .=)