AW55 Solenoid Adjustment, Diagnosis and Repair - Transmission Repair 

I am so grateful to people who share their knowledge. I am little-by-little rebuilding my V70 thanks to people like you that enjoy what you do and think of people interested in learning. Great video. I could not stop watching. Thank you, my friend

Did rebuild my valvebody this weekend with transgos repair kit. Not so difficult, but time wasting to clean everything up with brake cleaner and then boil of the seal that is bonded. Took me 7hours to check EVERYTHING in my valvebody. Installation and teardown, quite easy. Just a notice to everyone. MAKE SURE THE CONNECTIONS CLICK when installing back. Now my Volvo S60 T5 shifts like a new car. =) My symptoms were Delay bang P->D Delay shift 2->3nd gear

It was a pleasure watching a technician that can work and at the same time explain what he is doing with such confidence....great learning video. Thank you

Hey Hiram, just to let you know. Thanks for your help. I was able to repair my wife's 6T30 on a 2012 Sonic. The wavy like you said, broke and the snap ring broke in a couple of areas causing damage to the drum. I bought a new drum--I should have purchased the loaded one. It was a challenge since I didn't have any special tools for the pistons. I was able to use some ingenuity. I transferred the parts from the old drum to the new one. So far I have put close to 400 miles and she's running fine. I wished that GM would have recalled these transmissions since there are so many of them with this problem. Anyway, just wanted to say a BIG thank you for guiding me to the problem.

When I started in this trade in1980 it was a smooth gig. Now it's crazy how much we need to know. Should of picked something simple like rocket science.

I commend you for your work , sharing and professional manner. I think we can all learn from each other in the transmission industry. Thanks for all you post for all of us. It is always a pleasure to watch your videos, and i have been doing this a long time. Keep up the good work. All techs and students should pay attention to experienced tech who have as much to offer as you do. Again always a pleasure. Keep up the good work. ASE Master Tech.

Great video, many thanks. What is the thread size of the case tapping to connect to my gauge?

Thank you very much Mr. Gutierrez. Much respect! I appreciate your demonstration and explanation. It was specially helpful that you showed an example that required some diagnostics. I am going to crawl back under my XC70 and get it right this time. Peace.

Thanks very much for this and the other AW55-50 videos!!! I am currently rebuilding one of these out of a Saturn Vue and what you have shown have helped immensely!!!

hola hiram, recién reconstruí la aw 55-50 de mi captiva 2007 (gm), resulta pues que tenia quemados los discos que van en la tapa trasera junto con el b5,también tenia problemas con mis solenoides de control(slu,slt,sls) y los cambie por unos rostra, ahora el gran detalle: gradué los selenoides a 4.9 mm de altura. medidos desde el manifold hasta la punta del tornillo de ajuste. instale todo el cablea de acuerdo a el manual de reparación(soy ing mecanico, y tecnologo automotriz)... ahora mi gran dilema: al encender el vehiculo, el vehiculo no tiene casi fuerza para ir hacia delante y hace un ruido de bum cuando pongo retroceso, tiene mas potencia al hacer retroceso que ir hacia adelante. reviso por si hay fault codes y no hay ninguno. en idle el line presure control solenoid tiene 4.06 psi. que me recomiendas?. tienes alguna forma de contactarte via e-mail o telefono?gracias.mi correo es miguelscorza@gmail.com. many thanks mate

thank you! I really enjoyed the video. very informative. keep them coming

Hello Hiram I have a 2002 Volvo S60 D5 with this gear box, and I have an issue where it shifts very hard from 2 to 3. I think, as well that when I start, the car tends to be very very slow, sluggish would call it. They have been looking at the car in a garage and they say that everything is ok when they get the machine and adjust it, but as soon as they simulate low voltage - removing the battery - that all goes to hell, and they have the problem again. Any idea where the problem would be?? Have spent more than a month in that garage plus money.... Thanks a lot

Thanks Dr T. No video to long, thanks for the knowledge. Keep it up. Enjoyed every minute of it.

Great vid. I'll be doing this work on my 02 S60 in the next week or two and I'm sure this will be a big help. Thanks.

You seem very knowledgeable about these transmissions. If you get around to responding to this comment I would like to pick your brain real quick

Deep respect for you worck! Please help! I adjust SLT too 7 psi but i still have , on hot fluid , 3-2 BUMP add little 2-3 ,but 3-2 bump is my problem

I am in desperate need of your help. I have a 2011 Nisaan Maxima. The transmission quit working in all gears computer tells car to go into dummy mode. The trouble code P0746 pressure control solenoid A is stuck off. Everyone I talk to simply tells me that I need a new transmission. In your opinion do you think it would be worth me checking the solenoids? Is it possible that that could be my only problem?

Issue resolved, i had only 2nd and 5th gear available, and the couse of that was...broken TCM!! Was not sending any signal to black solenoid (on/off one).

Hi Hiram. First of all, thanks for the very useful video. I want to say that what you're doing, you're doing this very professional! Currently I have the plan to handle Volvo V70 - 2004 / Aisin Warner valve body. I want to ask you where to buy valve body gaskets and a small parts bag which have shown on 25:45 min. Thank you for answer.

Thanks for sharing you knowledge :)

Thanks for sharing your knowledge I have 2008 Volvo S 40 / 2.4I ....132.000 Miles If you can some information about change the filter and The Fluid

Thank You for yours excellents videos, you are the man!!!!!, thanks from Venezuela Bro.

Hi Hiram, I was having a terrible shift delay problem on third gear, on a 04 Nissan Maxima. I replaced my solenoids with new rostra. it changes gears very smooth now, exept when first to second at 2300 to 3500 rpms it hard shifts, actually when I do it a higher rpm it will shift very smooth. only on first to second I can feel a pull. thanks.

Hello gentleman,thanks for the great job.i have volvo with AW55-50SN transmission,when cold it shifts perfect,when hot harsh shifting from 3 to 4 gears and delay from N to D . please can you advice what to do? much appreciated.

Hiram, Thanks for the work you put into these videos. The more knowledge the better. I look forward to watching them then they come out. Keep up the good work! As far as the unit, why do you think they did not install new gaskets? Also, when using the VB pan for adjustments, do you leave it on during test drives and plug the holes? Thanks!

i would like to know what goes bad on these valve bodys that causes the p0797 codes

A question I did replaced transmission valve body, reprogram tcu also they check transmission pressure and everything is good but still give me code p0744 and sometimes p0731

Do you a have a link for the gasket kit? Thank you

Question i have a 55-50sn i have change da valve body tree times and i still have a late ingagement harsh. Ingagement

Excellent video. Big thanks!

Hi Hiram. I have a Volvo xc70 2002 aw55-50 I think. the problem is the downshift from 3 to 2, it delays for about 3 sec. before slams in to 2 if I don't go easy on the trottle. I know it is tough to analyse from this little info but do you think it could be one of the solenoids being dirty or broken? thanks for the videos there very aducational.

YOUR A VERY SMART MAN MR.HIRAM.

Hello! My transmision is hard down shift when fluid is hot , and deleay up shifting and litle slipping 5 gear . On cold fluid is acceptable. I cleaned solenoids but no diferece . Can you give me advice please . Tank you ! Sory for my language

Hiram, you've drilled holes in your 'test cover' to facilitate adjustment of the solenoids,. What prevents oil from leaking out the drilled holes while the engine is running (possibly a stupid question)?

@automatic transmission Have you ever rebuilt Aisin Warner TF80SC transmission and or valve body? I am tring to diagnose my hard shifting. It it random at times. A lot of stop and go traffic will make it act up. It will lag when shifting from 1-3 and same when down shifting. It clunks into gear hard and shakes the car when going into reverse. I will have the car stopped before I change directions. It is in a 2007 Saab 9-3 Aero. The transmission is common in Volvo's and Mini Cooper's. Maybe more. Love you videos.

Nice video, 2 questions: what size are your VB "guide pins" and which "shift kit" do you prefer: the Transgo or Sonnax sure cure/zip kit?? Thanks for all your valuable information.

Which thread type and size do the pressure taps have? Planning to adjust my new Rostra selenoids using the pressure tap but I don't know which thread size it is or what adaptor I do need. Can you give me a hint Hiram? Many thanks in advance!

Can I have the detailed documentation of the aw55-51 gearbox, please?

Great job and video

great videos, im having an issue with my 97 bmw 328i, the third shif is sliping a split of second to fouth gear and when waithing on a signal ligth sometimes a feel a small kick on the tranny, Im planing on replacing the selonoids on the transmission, did I have to adjust them? Thanks for all the great videos:-)

Hi Hiram! Thank you for great video! I have Chevrolet with the same transmission as Nissan - AISIN. Could you give me consultation to the issue? I had change transmission to new one(it was used before), and after that it is shifted up harmful - shifted down is OK- no problem. What problem could be with transmission? What could you suggest to check? A transmission repair specialist said that need make adaptation to the vehicle - what is your opinion?

Hello Hiram. If my Volvo rolled slowly turns the AW 55-50 back very hard . To throttle the same from 1 to 2. Any idea ??? In Germany there are unfortunately no specialists like you. Sorry for my bad English

Do you thing that electronic gauge is better that a high mechanical gauge? For this type of test

Thanks for this master piece of video! It will be very helpful with my Volvo V-70 transmission issues.

Thanks Hiram. Great video. I appreciate that you have taken the time to share your knowledge.

Excellent video, thanks for sharing it.

C.H Hiram I have a 2006 Nissan Maxima that I replaced all solenoids in the valve body but still having issues It drives fine sometimes and other times after 2nd to 3rd shifts its like it flies into neutral. If I put the car in park and turn it off for a few seconds and start it back it will go a couple of 100ft and does it again. I installed a pressure guage and checked the psi on the SLT solenoid and when I put it in gear the psi goes from 0 to 9 psi back and forth can you tell me what steps to check

hi, Hiram,I have an AW55 transmission, the valve body needs rebuilding ,can I it send there by UPS and how much would you take for that job? I'm in NY

perfect way of teaching thanks bro.

Hi, I have a Saab 9-5 2010, I have a problem with a errors P0778 and P0966. The errors refer to a problem with solenoid B. We are replace the solenoid and we check all installation cable and everything was correct but it again repeated the mistakes after a short time. Du you have any idea what we should check next or what could be really mistake? thanks in advance...

I have the p0797 code solenoid c stuck open which solenoid is this on the valve body cause my reverse won't work unless I shift to drive and back to reverse. also my 3 and 4 and 5 don't work together

Hi I have an 07 Chevy Equinox and I got a trouble code for shift solenoid C do you know where that one is located on that transmission

hey bro i have a 2005 Nissan altima 3.5L i had a code for pressure solenoid A i replace 3 solenoid that i bought from a transmission shop. the code went away. but know i have delay from neutral to drive when it engage is hard kick can i get away with adjusting the SLS solenoid

You have great films Mr. Hiram! Do you know what can be reason of very slow switch on reverse gear in AW55-51SN when engine cold ? Sometimes it takes even 6 seconds and switching is very slow (i can feel it while holding brake pedal). Kind regards!

Hi , im here because few days ago my saab 93 has prompted me with p0748 - 'Pressure Control Solenoid "A" Electrical'. The car feels like it starts moving with the hand brake on, but later, o higher gears its quite normal. In addition when picking D i feel a little jerk. From your experience, what is the most common reason of that error message? What needs to be done? Thanks in advance!

Thanks, great info. Gave me some confidence to go in there myself. Turned out great.

buen video ayuda mucho !! gracias

Do u have a video for a 2004 Acura TL rebuilding the transmission thanks

Hi Hiram. I am looking at buying an 01 v70xc volvo with the aw55-50 and they say it shifts ok cold but harsh when warmed up. I would like to rebuild the valve body on it. It has 113k miles on it. Do you think the transmission is savable?

you are a star, man!!! Thank you so much!

dawg i need you to do this for my car

Thank you for this video it had the same problem

hello HIRAN, I have a nissan quest 2006 and my transmission dispend a some feel seconds to change the second to the third gear with a some sound like a burn tire and my question is; to change a solenoids how much you charge? thank you and have a good day... Marcelo.

Thank you sir you are a good man for sharing your knowledge

Thank you. how we can adjust shift pressure in 2003 nissan maxima(re4fo4a)?

random question can a Volvo awd Trans aw55-51 be adapted to a Nissan Altima 3.5 with a 55-51 fwd trans

not many people on the subject of transmissions because they are afraid to work on a transmission

Hello Amigo Hiram How can I order the gasket set and small parts bag. I called TransGo they said I can not buy directly from them. I look around can find it. Thanks

Muy bueno. Eres el mejor gracias por compartir..

Fantastic information, thank you.

good work Hiram.

I have a quest shifts fine but when in drive and I hit gas to pass around 60 it jerks

can you use a dmm with a pressure transducer? I know snap on sell them.

Hi hiram can you recommend me how to measured the slt pressure first? it most reach 7 psi at idle in neutral? or in forward engagement? and about the sls there is a port to measured the pressure? my aw55-50sn is install on a renault laguna v6 3.0 it's a french car, the manufacture renault has ownership with nissan thats why there sharing units Thank you for sharing your experience Yoni

Hiram...Great videos...Thanks!!!

Sei un grande !!! Se potresti anche indicare un fornitore per ricambi , kit cambi , in italy e difficile trovare ricambi per cambi automatici . Grazie , aspetto gli tuoi video !

The problems lies within the valve body. The valves sometimes get stuck.

Can you explain the terms harsh, bump, flare? They are found in the guides for tuning the valve body solenoids, but I do not quite understand what it means. I repaired aw55-50sn on the Renault Laguna 2.0T, it remains only to adjust the solenoids. Now there is only one problem - switching 1-2 with a kick. And advise,please, any English-speaking forum of experts in automatic transmission.

where do you find the specs for adjusting the solenoids?

Hello Hiram, I have an 2005 nissan maxima and I changed transmissions but I have a 2-3 second delay between neutral and drive and a hard shift when 1st goes in, do I need to reset the Idle as well? Please let me know. I have not check pressures and other than It shifts very well. Thank you! I appreciate your attention to detail on your videos.

Length of the video didn't bother me at all. I know runnin a business doesn't really permit you to do it, but as far as I'm concerned, you could run the videos for 3-4 hours or longer as long as keep the good stuff comin like you've been doin.

hi hiram can you do a 09g solenoid adjustment video. thanks

GREAT VIDEO! KEEP IT UP! TEACHING THE WORLD! HIGH FIVE FROM MEXICO!

Hiram. tengo una transmision aw55-50 pero tengo problemas con patinado en 2-3 y 3-4, asi como despues de aprox. 15 segundos de estar en alto total en D se siente una ligera patada. es posible que sea el cuerpo de valvulas el problema? gracias por tu atencion

Hello great videa. Can you tell me slt line thread is m12 but which 1 1, 5 2 ? And presure can be checked which engine on or is it possible to check pressure /and/or adjust slt whitout oli pan ?

thanks for your videos are helpful

Hiram how can i becone a transmission Specialist like you? Thanks

Thanks for the great video.

Hey Hiram!! I have the same car,same problems,hard engagement hard reversing hard shift and 3rd free falls if I'm on the pedal I installed a shift kit- didnt fix it.. Should I buy new solenoids or tune those... And do these cars have tranny electrical problems Thanks man love your work... Hunter

Hey buddy I like your work where are you located whats state?

Hi Hiram I have a 2005 Equinox with a AF33-5 the ID tag says 55-50SN the owner says the car shifts normal when cold but as it warms up has hard 1-2 shift. Watched your videos on Solenoid problem. He pull transmission and brought it to me we disassembled and found no major damage on frictions. Could 1-2 hard shift be caused by Solenoid issue?

Una pena no saber inglés, el hombre la tiene clara, pero..

I need all the tips

Larry- - - what's your shortcut, or, does that fall under the 2 universal rules of success . . . 1) never tell anybody, everything you know? 2) (I can't tell you that.)

i need new gaskets for mi aisin tf70sc on my fiat 500 gearbox

thank you

لو سمحتم ترجمة عربي

hi,,,,,,,,,,,,,hirman...............how are you? I hope you are well and healthy !!!!!!!!!!!!!!!! I have recently taken some job that is the first time I am doing that is ford focus with 7m5r 7000 ad transmission and I do not have any information regarding that box at all .. I searched all around Internet to find some thing but no success , so can you help my for that , any information will be helpful even the basic data or ever..................thanks

Who builds a valve body with no gaskets??? Jesus!

i don´t speak english, in spanish please tank´s