How to Flush Power Steering System (Jeep Grand Cherokee 4.7 Hydraulic Cooling Fan)
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- Опубліковано 8 вер 2024
- Detailed how-to flush a power steering system with or without a hydraulic cooling fan. Work performed on a 2004 Jeep Grand Cherokee.
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Great video, but I'd suggest that since both the steering gearbox and the fan are driven from the same pump and the same reservoir, you only need to disconnect one return line, as you'll still get all the old fluid out - it'll just take a little longer.
Man these jeeps take Ocean power steering fluid, very Pacific
I wasn't gonna say anything.
Thanks Martin! Much appreciated! Remember Martin, that God loves you! 🙂
Thank you. I really appreciate that. I'm glad you liked it and found it helpful. 🙂
Latest info is pwr strng fluid must equivalent to Chrysler Spec Number 5931, which Redline is, I use on my 2004 Jeep G C HO
FYI for everyone, just discovered the O'Reilly's Power Steering Fluid also calls out Mopar 5931 on the back so it's equivalent as well.
@@Jedi22L As well as FRAM brand from Advance Auto. Picked up a gallon jug for $15
great vid like usual, super helpful. at first when I was looking at building an overlander, but your performance mods got me redirecting my build to have engine performance and off road capability.
Wow, thanks for this vid. After changing my power steering pump and the strange noise when the enginge was cold, I know now why. It‘s the wrong fluid my garage-people used. And I asked them before. F..k!
Great sound! I remember the days when I had a Grand Am that always leaked steering fluid, finally found there was a leak in one of the hoses...boy was that a bugger to replace! I don't have that car, returned it to the dealer as it had so many issues....not sure why a dealership would sell a used car with so much mechanical issues.!!!!
DizTraveler thank you... Those car dealership will sell you anything.. you're lucky you're able to return it
Nice video i from venezuela i have one jeep grand cherokee WJ 2004
Been watching your vids as I just bought a 2004 Grand Cherokee 4.7HO. I am enjoying my "beater" and your vids instill confidence for me to do my own work
Nice job Martin.
If you ever have to change the radiator you also need to disconnect the hydraulic fan as well, so that’s always a good time to flush the power steering fluid.
does the hyraulic fan need to be removed to change the radiator?
@@martinbuilt I've changed radiators on the WJ 4.7 both ways. The radiator can be separated from the fan and slipped out (I found it to be a PITA) however the recommended method is to pull both the radiator and fan as one unit and then separate the two once they are out of the vehicle. I'd never try pulling out the radiator alone again.
@@subsofanarchy I pull them off separately and that radiator gave me the hardest time to come off
Nice I need to do this, my power steering is slightly hard to steer sometimes for a half a second at a full stop.
Wow, super squeaky clean engine. Informative video. I gotta check out your intake.
Thank you I pride myself on a clean engine bay. Yeah check it out I got a couple videos on the ram air
Ecellent video Martinbuilt. Thanks.
Thank you. I'm glad you found it helpful.
Profesional job man .
FYI : was just at the Jeep dealer in Austin Texas discussing this very issue with them .. their databases seem to not have captured the power steering fluid type compatible for these hydraulic fans .. the guy seemed very nice and dig around to find the info .. it’s not there ... I told him I’ll bet dealers all over the country are making a mistakes to their customers due to horrible technical information availability in their databases .. he has to get back with me as I wanted extra quarts and I don’t want the wrong fluid (2004 Jeep Grand Cherokee 4.7 l overland with hydraulic fan)
You need MS-5931 PS fluid.
wjjeeps.com/service/maintenance_wj.htm#OTHER
@@overlandadventuresoffroad2078 yeah .. Thx .., I did find “MS 5391 COMPATIBLE” PS steering fluid at O’Reillys .. did the fluid change and it DID NOT do the job. So I suspect it’s VISCOSITY is not the same as fully compliant MS 5391 fluid as that factor would greatly effect fan speed controlled by that solenoid valve .. it was a big disappointment. I was also at the Jeep dealership and they didn’t seem to have a clue about what I was talking about which was really strange
@@johncorson6599 Interesting, I just (today) did a PS flush on my WJ with the 4.7l HO and hydro fan. I used FRAM from advance auto which is also MS-5931 compliant. It seemed fine today, didn't get as hot as it did the other day with the old water mixed fluid. Curious to see if long-term this fluid also has issues with the fan. I'm sure another MOPRA dealer will have it, just tell them you need MS-5931 PS fluid.
@@johncorson6599 So i did some research, it seems that MS-5931 got replaced with p/n 5142893AA, which then got replaced with p/n 68234631AA
So i think if you tell your dealership that you need p/n 68234631AA, it will come up as MS-10838, it is labeled on the bottle as 'Hydraulic System Power Steering Fluid' but is under ATF. So kind of confusing.
@@overlandadventuresoffroad2078 f yeah it is confusing ... Thx for the info, I’ll snapshot your info and start tracking it down . Thx
It only happens after the engine is warmed up and then I get stuck in traffic or something in Dallas or austin Tx .., then temp rises close to 210 .. never did it till I had ‘service’ done at a corrupt Jeep dealer (Eddys ) in Wichita Kansas
You think unplugging the HEC solenoid harness would have also activated the fan?
Excellent video!
Nice info Martin, regards from Denmark
It isn't clear what 3/8 fitting you need. Is it double barbed, female thread to barb, male thread to barb? Thanks.
I'm now replacing the PS pump on my 04. It's losing fluid with no apparent leaks from the pressure line . It was already a remanfactured unit. When I get the new unit installed I plan to spin the pump with a power drill to flush out the lines. Do you think that a fluid pump would help clearing the fan return line? I just now hooked the hand pump to the high pressure line and was able to get fluid to flush out to the power steering return line.
Too bad you didn't include when pulling off the low pressure hoses on the back of the power steering pump, be careful as they could snap off., LOL. My luck. Now I have to remove the whole power steering pump and all. 2001 Jeep GC. Great video though. Hose removers beware. It was the first time this hose was removed. Still had the original clamp-on retainer. Previous owner put red power steering or transmission fluid in there. So maybe it was an omen to get it replaced anyway
Its common sense....
Another unrelated detail is the axle gear cases require a viscosity reducer additive when gear oil is replaced .. it is very important ..the regular service shops like firestone or I’m sure most of them do not pay attention to this detail .. when it is NOT done properly the clutches for those axle gears DO NOT get properly lubricated and there will be weird sounds from the steering around corners or whatever . this happened to me and I’ll never allow a service shop to do it again .. they do not pay attention to these details and the 2004 Jeep Grand Cherokee overland with 4.7 engine I have made it clear many service shops rarely pay attention to the details .. even at a criminal Jeep dealership in Wichita Kansas (Eddys .. known in town by locals as a terrorist service shop) I know did many bad things to my Jeep and I have to have my power steering system redone after they screwed me over big time on other things .. the dealership license there is a reckless gambler and apparently pays his gambling debts with ripping off customers in his dealerships ...my Jeep has never been the same since they touched it and they DID NOT replace inner axle bearings they said they did at huge cost to me .. the axle hub was still frozen by rust to the pinion thingie when I finally could get out of that town and do an inspection as I had no place or tools there in town to do so ..
You can use this website to know what your Jeep came with
Chrysler Build Sheet fcacommunity.force.com/RAM/s/equipment-listing Enter the VIN as it appears, case sensitive.
If you have an Overland it will need Mopar Fluid Limited Slip Additive - 4 oz. Bottle amzn.to/2EsMTFL
and for the transfer case Genuine Chrysler Transfer Case Lubricant NV 245/247/249 1 Quart amzn.to/2TehFs6
Here are a couple of videos on how to replace fluids on rear axle and transfer case.
Transfer case fluid change ua-cam.com/video/YgnEyhuXoOY/v-deo.html
Rear axle fluid ua-cam.com/video/kwsp6CPc_6A/v-deo.html
@@martinbuilt thank you Martin .. I have found your videos very very helpful .. thank you for taking the time to make them
Could the wrong ps fluid make the pump noisy?
Yeah it could but most causes of a noisy power steering pump low fluid which is introducing air into the pump which will cause vibration of the vanes. Air in the system which could be caused by a loose return line. Worn out fluid which has lost its viscosity properties.
Any suggestions why no power steering changed pump, only soft when tires on air. Or accelerating. Please help. Thank you
Where’d did you get your headers, I’ve been looking everywhere and starting to think I have to get them made
Bro am having a power drain and missing in initial take off... Changed plugs and coil any recommended tweak
I have a 2008 grand Cherokee 5.7L w/ hemi and I can’t figure out with my van won’t kick on to a higher speed. PCM was changed 2 years ago, and replaced the relay can you give me some advice
I guessed that the power steering fluid was the culprit. Make sure fluid is MS-10838 or another version MS-5931 if your Jeep have power hydraulic fan like 4.7l laredo. DO NOT use ATF +4
I've seen numerous Jeep forum posts stating that only the 5.7 Hemi engines had the hydraulic cooling fan. How can I easily identify a Jeep that has this type of fan drive?
If there are hydraulic lines going to the fan motor, it is a hydraulic cooling fan, and these lines will come from the power steering pump and the steering gear box.
ive replaced every oring on all the lines, no leaks, power steering pump in new, and I still am getting air in the system and whining. Seems to make the most noise at the limits of the steering
What vehicle is this on?
@@martinbuilt 2002 jeep grand cherokee 4.7 ho
@@wehz0r did you find the problem my o4 is doing the same
I have an 08 Jeep GC 5.7 with the hydraulic cooling fan. How do I correctly Identify the return lines compaired to the other hoses? I just don't want to mess up my hydraulic system and then end up having to replace it all lol
I'm not real familiar with the Grand Cherokee with the Hemi engine but the low pressure side should be coming from the power steering cooler And most likely attach with hose clamps where the high pressure side has a flared aluminum line at both ends. I hope this helps.
Martin! Question here! Do you use power steering filters? Would it be a good idea to install a power steering filter on a 04 with hydro fan integrated with the power steering unit?
I do use one on my 98 Jeep Cherokee XJ. Install it in line on the return line.
Thank you for watching.
I've been racking my head with this crap and the manufacturer states that you do need to put ATF plus four anytime that you replace a part on your power steering they come with power steering fluid in them from the factory but anytime you switch over your pump or change out a line Jeep and the aftermarket manufacturer require that you put ATF plus four
If you have the hydraulic cooling fan used to fluid that I recommend
That's correct for the 4.0L without the hydro fan but with the 01-04 4.7 it has to be Chrysler 5931 or 5931 equivalent. The viscosity of the 5931 is quite a lot thinner than atf. My 01 4.7 had atf in the PSS when I bought it and it had ruined the pump and the gear box is holding on by a thread because of improper fluid
@@TOO_RAW well it's in there now and I ain't flushing it again it's been a couple months and no problems if it goes out again it's not to expensive and easy to replace... Guess I'll cross that bridge when I get to it
@@carlosgarciasr.389 if it's worked this far then dont sweat it, I've heard that it works flawlessly for some people and not so good for others so I guess it just depends on the attitude of the jeep haha. With mine the previous owner was kind of a dumbass and had the wrong coolant in her, never changed transfer case fluid, never changed the differential fluid or the filters in the trans all the way to 187k miles and used the wrong power steering fluid the whole time. The power steering pump groaned and whined like a pissed off woman. That particular pump shat the bed on me and I believe the gear box needs to be replaced sooner or later. After a new pump, 2 flushes, a massive inline filter with internal catch magnet and a magnet installed in the pump reservoir it finally seems to be running quiet and working like it should.
@@TOO_RAW could be they didn't properly flush the whole system like I did you're not supposed to mix the fluids that will cause a failure they pretty much told me that I had to fill that thing like once I remember I might have even done it twice that could be why I didn't have the bad luck that other people had that you're speaking of don't know not a mechanic hopefully that helps somebody on here
if your like me and just want to get to it rather than taking a nap in between sentences speed this up to 1.25. youre welcome
Thanks bud, even 1.25 is a little slow at points.
👍
you might want to see a doctor about your problem
I have metal shavings in my fluid. cant seem to get rid of them
it could be coming from the hydraulic cooling fan
@@martinbuilt its gotta be the steering box. I put some lucas oil stabiliser in it and it broke free and started working again
@@wehz0r sounds like you should replace that steering gearbox.
@@martinbuilt I wish. Im on a student visa in Australia earning less than 600 per week lol. Is there a way to filter or flush it? I saw some generic power steering/transmission filters online and was thinking about hooking one up from the radiator return
@@martinbuilt Some guy quoted me $1100 for a rebuilt one - My whole vehicle was $1700! 😂😂😂
I need to replace the line/hose from the middle port of the fan that goes to the gearbox so I want to do this at same time.
Where does the other line (low pressure) from the gearbox go?
If you did it again, would you turn fan “on” to get more fluid out or would it go out too fast? Thanks!
That low pressure line goes to the PS cooler.
@@martinbuilt ah ha, so there is a PS Cooler - ok - thanks!
@@jcstevegigs On the earlier models there is a cooler in front of the A/C condenser on the right side. Then in 03 or 04 it was built into the A/C condenser.
MY 1999 has a hydro fan 🙃
Jeep Grand Cherokee's didn't come with hydro fans until 01. Are you sure you have a hydro fan
@@martinbuilt 100% sir
Just had the relay changed for it
and then I lose power steering after using it too much...