Actuator feed limit bore wear results in low pressure at shift and EPC solenoids. a stall test with a pressure guage should have shown low top end pressure kinda like a maf dirty under reporting. we replace alot of AFL valves nice work good video thanks

@GaryFerraro

8 жыл бұрын

Yes, i kinda knew it was probably the AFL valve from what the customer was describing, i hooked up a gauge pressure didnt look all that bad, but i didnt do a stall test, when cold van drove ok, hot is when the shifting issue started. Thanks for watching. Gary

Love your videos. Seriously they are awesome. Very informative

@GaryFerraro

8 жыл бұрын

Thank you and thanks for watching

Gary, as always another great video! Thank you. I have been on the fence about purchasing this tool. So many valve body wear issues that we can't see during overhaul. I think this is something I'm going to have to put in my toolbox. This would make condemning a valve body much more easier and determine whether to purchase The tools and parts to fix or just buy a rebuilt Valvebody. I have the set up for the 4L60E TCC valve and just do that as part of a normal overhaul because of the wear seen in all of them. Thanks agin for your videos.Brad

@GaryFerraro

7 жыл бұрын

It really is a great tool, ive had cars come in where we couldnt feel the problem(it would only happen when very hot) but vacuum testing the valvebodies or pumps we would find it that way.

nice video Gary, i just picked one of these sonnax testing platform too from Transtar it is a game changer on valve body diagnostics.

@GaryFerraro

7 жыл бұрын

Yes, tool is great, where do you rebuild?

@hipzwhitetower7413

2 жыл бұрын

Not only on valve bodies, you can check pumps, cases, pistons, servos. You can check everything.

thanks for sharing your knowledge.

Your job there Gary that is a good tool but it takes a smart man to know where to check it at and therein lies the problem gotta understand them valve bodies

I have a 96 Tahoe and the unit shift hard to 4th gear only. Any ideals? I rebuild it myself 4 years ago and put all stock parts back in there.

What method do you use to check to see if 2-4 servo snap ring is seated fully?

Hey Gary where can I find the gm shift box, I want to test 4l60s and 80s

Its very interesting how you check the vaccum

@GaryFerraro

8 жыл бұрын

Its a very good concept, within a few minutes you can tell if your valvebody is good or bad. Thanks for watching. Gary

I have a 4L60E off a 99' GMC Savana Van 2WD with a 5.7L. I was checking the 2nd clutch circuit on the case. It was not holding vacuum. First thing that came to mind was that maybe there's a leak in the 2-4 servo. I applied 30 psi to apply the servo but it blew through the servo pressure relief port on the case. is that normal?

@GaryFerraro

7 жыл бұрын

It should apply the band, it shouldnt leak

Have been at it since 1981

Looking into getting this tool from Sonnax soon. What vacuum pump are you using? Thanks.

@GaryFerraro

6 жыл бұрын

you have to use a 3CFM pump at least, i have a 4CFM blue point pump i use

@MrBcumbie

6 жыл бұрын

Yea I was looking at some of the cheaper 3cfm pumps, but may talk to my snap on dealer about a better quality pump. Thanks for the reply.

@GaryFerraro

6 жыл бұрын

your welcome

great video.. eng. Gary. I have my 2004 suburban 5.7l the transmission shifting from 2 to 3 gear no functioning. I mean no shift from 2to 3 gear. any idea what is reason ?? transmission fluid very dark and smell burn oil. plz advice thanks again

@GaryFerraro

7 жыл бұрын

Ok, does it seem like when it does make the shift it goes into neutral instead of 3rd?

@libertyforamericanow

4 жыл бұрын

@@GaryFerraro mine does. 1993 chevy van. 3rd seems like neutral. I'm a good mechanic but never dove into a auto trans. Wondering if I could rebuild it myself.

@GaryFerraro

4 жыл бұрын

@@libertyforamericanow That's common for 3rd to go out, not a bad trans to work on. Your problem is in the input drum, the 3-4 clutch is no good. Have you watched any teardown videos?

@libertyforamericanow

4 жыл бұрын

@@GaryFerraro o yeah. I've been watching transmission bench channel on this trans. Thinking about attempting it. His website sells a kit with seals bushings sedra for four hundred bucks. But I make decent money doing Mobile Lawnmower Repair so I'm wondering whether I should just leave it up to somebody else and keep working on lawn mowers and pay up

@GaryFerraro

4 жыл бұрын

@@libertyforamericanow Where are you located?

There is a table chart or something for this type of test in different types of valve bodies just to verified is good before install in the unit?

@psicopatalucifer

8 жыл бұрын

is this table chart on the transmission repair manual .? (repair books like ATSG.!!)

@GaryFerraro

8 жыл бұрын

There actually is not, you would have to keep your own records as you test the valvebodies. On certain transmissions sonnax does have vacuum test guides, that show where to test the valvebodies. gary

North Seattle transmissions

I hope some day you can do a A750E

@GaryFerraro

8 жыл бұрын

I will keep that in mind, havent seen many as yet.

hello gary. a just did a 4l65e, no shift kit, and shifts fine in ligth throttle, but in heavy has 1-2 long shifts. any tips?

@omarmonzo5426

7 жыл бұрын

escalate 2006.

@GaryFerraro

7 жыл бұрын

What you may want to try is to pull the side servo out and order a corvette servo, that should sharpen up that shift, who do you buy parts from? where are you located?

@omarmonzo5426

7 жыл бұрын

i buy the parts from natpro. and i locate it seattle wa

@GaryFerraro

7 жыл бұрын

omar monzo Greetings from New York. I buy from Transtar

@GaryFerraro

7 жыл бұрын

omar monzo Do you work at a shop or on your own

Where I can buy this tool

@GaryFerraro

3 жыл бұрын

Vacuum test stand is a sonnax product, sold by Transtar, I'm sure someone sells it on the internet.

Hi Gary, I have been watching your videos for a while now and good job to you. I am a rebuilder in Australia and am some issues with 4L60E 3/4 burn ups after reco. I have been doing these things for years and never had issues but I am starting to see issues on high mileage vehicles. Can I contact you via email or some other way to discuss. Regards Ross J

@GaryFerraro

5 жыл бұрын

sure, my e-mail is gsferraro@yahoo.com

Where are you located

@GaryFerraro

7 жыл бұрын

Im in New York, Do you use Aussie Automotive electronics for your computers?

No I use what ever transtar and Natpro supply

@GaryFerraro

7 жыл бұрын

Ok, i actually didnt know transtar supplies computers

@weldean46

7 жыл бұрын

Sorry no they don't my bad , just. Solenoid and sensors we get computers from dealers most of the time

@GaryFerraro

7 жыл бұрын

Nice to meet you john, im doing this since the around 83, this year we are celebrating our 50th year in business. My dad opened in 1967

@weldean46

7 жыл бұрын

That is awesome and nice to meet you too another master in the trade , I will keep in touch with you and i hope you do the same

@GaryFerraro

7 жыл бұрын

Yes sir, will do