Diesel Forum - TheDieselStop.com - View Profile: Mark Kovalsky

Mark Kovalsky Mark Kovalsky is online now

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Showing Visitor Messages 1 to 10 of 107
  1. SDHYDE17
    09-08-2015 09:41 PM - permalink
    Thank you sir, do I really need to change the transfer case and both diffs fluids?
    thats another 450...
  2. SDHYDE17
    09-08-2015 12:32 AM - permalink
    Hello Mark, I just got a 2010 F250 6.4 D. 90K miles. I want to flush ALL the fluids and change filters. I got a quote from a local shop for 1600.00. Little high for my budget. needs power steering and tranny for sure. That plus oil lands me at $800.00. Is this a fair price? Anything you would recommend at this mileage for preventative maintenance?
    thank you sir,
  3. dkwelder
    08-11-2015 03:31 AM - permalink
    Thanks for your time and input on that !
  4. dkwelder
    08-10-2015 04:44 PM - permalink
    Hello Mark, Newbie here with an engine tranny swap question. Can I bolt a newer 2001 7.3 engine up to an OBS 1997 7.3 which has the E4OD tranny ? Or do I need the 2001 4R100 trany, T-case and complete truck wiring harness with it also? Thanks for your time and info.
  5. loubrock72
    03-30-2015 01:39 PM - permalink
    Hey Mark I have a quick question about the 7.3 4r100 with the ebrake on it. I know it has the same tailhousing as the 4x4 , but will it work in a 4x4 truck? It appears the VSS is located on the Ebrake. Thanks for your time.
  6. wolfetruck
    03-10-2015 01:45 PM - permalink
    Mark, please let me know if you think after 15-20k miles on a new reman 4r100hd transmission in a 2001 f350 dually i should just change the fluid or also change the filter. just called our dealer and he said a new filter was not needed when i ask him to do both. i pull a 10,000 lb camper in the summer so i dont want any more transmission problems. Thank you for your time and advice,
    Mark Wolfe
  7. Kuronushi
    11-26-2014 06:41 PM - permalink
    Battery was disconnected when the upgrades were made. Also cleared the memory again, by disconnecting the battery. It's still flaring. It seems 2-3 shift and 3-5 shift are flaring. Hoping it's just the solenoids (fingers crossed). Which solenoids would you recommend replacing/upgrading? EPC, Coast and Direct?
  8. Kuronushi
    11-25-2014 06:14 PM - permalink
    Hey Mark, I'm new here at TheDieselStop. Looking for more information on an issue I'm having with my trucks transmission (5R110). What I know so far is that there is flaring 4-5 shifts, which I suspect is the solenoid but I also hear another sound coming from the transmission area. I just recently had APR headstuds, gaskets, IPR, glowplugs, EGR delete, and Oil cooler upgrade done. I'd hate to believe that it's the engine. It sounds like a rattling/vibarating sound through all gears including reverse and park. If I let the truck sit a while and turn it on, that sound is not present in till put it into drive or reverse and move a little it creates the sounds and persists to be there even in park. The sound and slight vibration remains in till I turn it the truck off and let it sit for a while. (note: sounds is there hot/warm or cold). Is there any information you can provide before I start this project?
  9. Sancho
    11-13-2014 10:24 AM - permalink
    OK thanks Mark. I'll have the dealer look at it.
  10. dvorocks
    11-13-2014 09:36 AM - permalink
    I have a question for you. If I drive truck with the tranny stuck in 3 or 4th and manually shift it will this damage it? The truck is located 3 hrs from my house at a garage that had it for 3 weeks and I want to get it out of there. If I drive it back home Id be more confident with the mechanic that would fix it ( if I couldnt figure it out myself)

  About Me

  • About Mark Kovalsky
    29 years automotive engineering, 2 years owner/operator general auto repair shop.
    SE Florida, USA
    Auto racing, antique cars and trucks, flying
    Former Ford Auto Trans Engineer
  • Signature
    Former Automatic Transmission Engineer 1988-2007

    “The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson


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Visitor Messages
General Information
  • Last Activity: Today 04:43 PM
  • Join Date: 05-07-1999
  • Referrals: 1


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02:22 PM - Mark Kovalsky quoted Dogbone7.3 in post E4OD Swap question '95 to '93
I was also told that the coast ...
05:31 PM - riehs quoted Mark Kovalsky in post Is my transmission shot?
It isn't possible to drain 16 quar...
03:07 PM - dutyhole quoted Mark Kovalsky in post 1994 E350 7.3L IDI eo4d trans issue shifting
Sometimes it's called that. THANK...
06:10 AM - dutyhole quoted Mark Kovalsky in post 1994 E350 7.3L IDI eo4d trans issue shifting
The first thing to do is to run se...
09:14 PM - dutyhole quoted Mark Kovalsky in post 1994 E350 7.3L IDI eo4d trans issue shifting
The first thing to do is to run se...
06:22 AM - obs_man quoted Mark Kovalsky in post E40D pressure tests, what is with 1st?
What are pressures at idle speed? ...
11:40 PM - chuckster57 quoted Mark Kovalsky in post e4od problems
You probably damaged either the tr...
01:30 PM - Mark Kovalsky quoted rock_doctor in post Is my transmission shot?
Some of the transmissions had an...
10:43 AM - Mark Kovalsky quoted ValricoJoe in post O/D light flashing and shifting hard
When hot, the level is in the l...
09:08 PM - Mark Kovalsky quoted Steve83 in post OD Light flashing
Disconnecting the battery is...
01:47 PM - Mark Kovalsky quoted midwestconnection in post O/D light flashing and shifting hard
Just do it Is his trans overfilled? I...
06:24 AM - midwestconnection quoted Mark Kovalsky in post O/D light flashing and shifting hard
How would that cause the OD light ...
08:29 AM - Mark Kovalsky quoted midwestconnection in post O/D light flashing and shifting hard
Lower your transmission fluid level H...
11:48 AM - Mark Kovalsky quoted Steve83 in post Overdrive Light Flashing and shifting hard
Does this work on diesels? ...
10:04 AM - Mark Kovalsky quoted red1978 in post TC or R4100 problem need some advice
So maybe two days ago I noti...
01:01 PM - bbasso quoted Mark Kovalsky in post Maintenance time, suggestions and comments please.
It's even getting cold here! It wa...

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