My mustang is about to crank over 100K miles....
05-19-2014, 05:55 PM
#22
1st Gear Member
Join Date: Apr 2012
Location: CA
Posts: 67
I personally did the 'J-Mod' on my old 4R70W transmission in my '99 Crown Vic, it only cost me a few dollars and followed the write up on it, it was pretty straight forward. You basically open up a few holes in the valve body separator plate so the clutches engage faster. I did reverse, 1-2, and 2-3 shifts. You could also optionally remove the 1-2 and the 2-3 accumulator springs, but the shifts can get pretty harsh.
It was fun barking the tires in my crown vic when shifting! The 3.55 limited rear helped a bit too
. My old vic is still on the road at ~220K miles with the original trans, my sister in law has it.
Back in the day I had a '73 Dodge Coronet with the 3 speed 727 torqueflite and she would bark those tires at 55mph 1-2 shift! Never had any issues with that trans either.
It was fun barking the tires in my crown vic when shifting! The 3.55 limited rear helped a bit too
. My old vic is still on the road at ~220K miles with the original trans, my sister in law has it.Back in the day I had a '73 Dodge Coronet with the 3 speed 727 torqueflite and she would bark those tires at 55mph 1-2 shift! Never had any issues with that trans either.
05-20-2014, 06:33 AM
#24
6th Gear Member
Join Date: Jul 2008
Location: Acworth, GA
Posts: 12,260
I was speaking to an AM rep today about wheels and asked him about this at the end of the conversation to see what he would offer and he said to leave it and only change it if I start to have problems. I thought that was weird since I am not sure how changing the fluid at that point would fix a problem.
The 4.0 is just getting broken in @ 100k!
05-20-2014, 03:24 PM
#26
Gentleman's Relish
Join Date: Feb 2005
Location: AZ
Posts: 13,090
make sure with the sparkplugs that you go to a Ford dealer who will replace all spark plugs AND cover additional work that needs to be done if a sparkplug breaks.
I only had 60k on mine, and I had 2 sparkplugs break during the replacement process. It's very likely plugs will break on yours at 100k, when they go to take them out. If you take it in with someone who charges for the additional labor you could be out like $300 - $600.
Don't make the same mistake I did.
And fluids and belts like everyone else said for replacement.
I only had 60k on mine, and I had 2 sparkplugs break during the replacement process. It's very likely plugs will break on yours at 100k, when they go to take them out. If you take it in with someone who charges for the additional labor you could be out like $300 - $600.
Don't make the same mistake I did.
And fluids and belts like everyone else said for replacement.
As for the tranny fluid changing. Every 30K per ford. Our tranny's are considered a lifetime sealed unit. The dealers use a Rotunda machine which flushes clean fluid through the system until it comes out the other end clean as well. It cleans the filter, all of the lines, the cooler, and also the converter.
ATF Can go bad, not just from overheating but also the amount of particulates present (metal, carbon, plastic/rubber shavings etc.) and just the wearing out of the detergents.
BTW overheating is considered anything over 225F for tranny fluid. Some spirited driving or stop/go traffic on a warm summer day will easily exceed that temp in the tranny fluid and reduce its life. At 225F (about 30K) tranny fluid life expectancy is halved from that of 200F (60K). At 250 the life expectancy is half of what it is at 225 (15K).
05-20-2014, 04:42 PM
#27
3rd Gear Member
Thread Starter
Join Date: Aug 2009
Location: Jasper, IN
Posts: 772
That's only on a V8 4.6L engine, not the V6 AND shops that know about eth issues with the 4.6L plugs don't cover the additional labor if they break plugs. Any of the shops I've spoken with about it have been very up front about it and I think there are also some members here that have personal experience with a fugged up plugs from shops.
As for the tranny fluid changing. Every 30K per ford. Our tranny's are considered a lifetime sealed unit. The dealers use a Rotunda machine which flushes clean fluid through the system until it comes out the other end clean as well. It cleans the filter, all of the lines, the cooler, and also the converter.
ATF Can go bad, not just from overheating but also the amount of particulates present (metal, carbon, plastic/rubber shavings etc.) and just the wearing out of the detergents.
BTW overheating is considered anything over 225F for tranny fluid. Some spirited driving or stop/go traffic on a warm summer day will easily exceed that temp in the tranny fluid and reduce its life. At 225F (about 30K) tranny fluid life expectancy is halved from that of 200F (60K). At 250 the life expectancy is half of what it is at 225 (15K).
As for the tranny fluid changing. Every 30K per ford. Our tranny's are considered a lifetime sealed unit. The dealers use a Rotunda machine which flushes clean fluid through the system until it comes out the other end clean as well. It cleans the filter, all of the lines, the cooler, and also the converter.
ATF Can go bad, not just from overheating but also the amount of particulates present (metal, carbon, plastic/rubber shavings etc.) and just the wearing out of the detergents.
BTW overheating is considered anything over 225F for tranny fluid. Some spirited driving or stop/go traffic on a warm summer day will easily exceed that temp in the tranny fluid and reduce its life. At 225F (about 30K) tranny fluid life expectancy is halved from that of 200F (60K). At 250 the life expectancy is half of what it is at 225 (15K).
05-20-2014, 05:01 PM
#29
1st Gear Member
Join Date: Apr 2012
Location: CA
Posts: 67
You have to take the pan off and it's right there. It is a messy job if you do it yourself. I personally don't trust those trans fluid change machines, if I do take it in, I request them to physically change the filter.
...And I always replace any fluid with full synthetic when possible (Mobil 1), I am a big believer in full synthetic oils.
Last edited by allenmaty; 05-20-2014 at 05:14 PM.