Today, I have to spend time on one of the household vehicles. My girl's 1990 K2500 extended cab truck with 129,500 miles has a vibration that is more pronounced in the seat of the pants and can feel slightly in the floorboard, that comes on at 45 mph and continues till 55 mph. Cannot feel below 45 mph or above 55 mph. Feel it whether cruising and maintaining speed in that 10 mph window or when accelerating in that window and also when decelerating in that window. Has a 700R4 transmission and knowing that the O/D kicks in around 45 mph, I considered a transmission problem but I reached out to
@NickTransmissions for his opinion and he does not think it is transmission related. I did check the transmission fluid and is very clean and full. Had a transmission flush approximately 8k miles ago, before I started living here with my girl, and I did a transmission fluid and filter change about 8 months ago.
I now think, and so does
@NickTransmissions, that the problem is likely tires related. I will be getting it up on jack stands today and will inspect from front to back for anything obvious and will set the stands at the rear axle and under the lower control arms, so I can run it in the air and inspect the driveshaft. I will be swapping tires, front to rear, to see if they are the source of the vibes. I am leaning with the tires but still want to look under there while I have the time.
I am waiting for a right outside mirror for a 2020 Acura RDX, a set of ignition coils for a 2008 4Runner 4.0 and two rear shocks for a 2013 Acura RDX and when they show I have work to do. Unfortunately the owner of the 2020 RDX is in the hospital and turns out he is 87 and has congestive heart failure and only has use of about 25% of his heart. The 2013 RDX owner is the son in law and I asked him yesterday if they still want me to replace the mirror and he said definitely, YES, and that the owner will be out of hospital and want his vehicle fixed and if he passes, the family will keep his 2020 RDX.
I am still waiting to hear back from the 1985 F150 pickup truck owner about all the rust in the brake system but so far, crickets. This tends to happen from the VFW and American Legion guys. Sometimes they talk a big game but then have excuses for not following thru. His problem appears to be that he wants to fit in at the AL Post real bad and buys drinks for anyone in the bar. Very nice guy but he is an S.A.L. member and that is a "Son of American Legion" and not an active duty Post member and for some reason he feels like he has to buy drinks all the time to "fit in". He may be over extended because of that. Oh well, I know his GMC truck starter fixed that problem and the brake booster and master cylinder and carb work did fix his F150. His silence is not because of my workmanship for sure.