O.K. Here's the deal. Changed the oil, Super Tech 2000 w/ a Super Tech oil filter, oh and some Valvoline High Mileage engine additive. Changed the spark plugs, Bosh Platinums gapped to .44 with new Bosh wires, and changed the tranny fluid, Napa gear oil, 85w90 (something like that). Now before I did any of this, just so you know, I started to feel a roughness as I accelerated, and in particularly from 50-65 mph. What gives? It's like some kinda vibration, I notice that the fuel guage (when copletely full), and oil pressure markers have a very fast vibration to them when I'm driving at these speeds. What gives? Tires? Shocks?
you didn't do it welcome to fte fte does that my first advice is to pull codes which i vital for these trucks don't know how check out ken00's tech article on how to do that
here is my answer to your question
when you changed the wire and plugs did you do a cap and rotor and stator change as well.
'85 I think was the first year for the CV style rear driveshaft. Vibration on acceleration is one possible sign the CV joints are going. If you have regular u-joints, make sure they are in good shape.
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'87 Bronco II XLT 4x4 & '92 Explorer XLT 4x4 & '98 Chev Suburban K1500 SLT 4x4
No, no new cap and rotor. I really thought about this, but figured I would do it next paycheck. I'll check on the CV vs. U joints and get back to ya'll. Thanks! Also, can you pull codes on a vehicle this old?
Hey, I also saw in the tech section that some poster put Mercon V in his 5spd Manny Tranny. Can you do this? I thought it was only supposed to get the 85w90 stuff like I put in mine. Also I looked at the EEC-IV codes section and did not find anything for the 2.8L. Am I missing something, or do I refer to another engine dispalcement?
I don't remember which manual Ken got that from, but it's from a later year, and his manual doesn't seem to support the older carburated engines. But, the procedure for pulling codes is the same (jumper STI to sig ret and codes are output as sweeps of a voltmeter attached to STO and B+).
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'87 Bronco II XLT 4x4 & '92 Explorer XLT 4x4 & '98 Chev Suburban K1500 SLT 4x4
O.k. A Little Clarification Here. I Have Isolated The Vibration. When I Am Accelerating From 1st To 2nd, And Hit 2nd Gear The Engine, I Believe, Is Vibrating, Around 20-25 Mph. Same Goes For When I Shift From 3rd To 4th, Around 45-50 Mph. When I Hit 4th And Then 5th From 50 To 65 Mph, It Seems Like The Bii Is Vibrating, And It's All Coming From The Engine/tranny?
Sorry if I missed it in the previous posts, but have you checked for play in the CV yet. You can do this by grabbing the drive shaft and just twisting it, there should be close to none. Also worn CV's typically only vibrate after acceleration when there is no load on the joint.(coasting) Have you noticed this tho be the case? While the cluch is in?
Sorry if I missed it in the previous posts, but have you checked for play in the CV yet. You can do this by grabbing the drive shaft and just twisting it, there should be close to none. Also worn CV's typically only vibrate after acceleration when there is no load on the joint.(coasting) Have you noticed this tho be the case? While the cluch is in?
You'll have to forgive me as far as mechanical skills go. My brother inherited all of those genes. In response to your question, yes. When I am coasting, with the clutch depressed, going say 55 mph, the vibration is very noticeable. I have been having to drive over 2 miles to get to work on a very rough dirt road, until the county installs a nice, new paved one. Needless to say, I have jarred this poor BII a couple of times. Is this what you mean TrickbII? If so, I'll have to get under the beast and see if I can figure it out myself, or wait till this weekend and go to my brothers house and figure it out.
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