Sponsored

How to make my power steering pump overheat every time ?

kkarnage

Well-Known Member
Joined
May 6, 2020
Threads
26
Messages
204
Reaction score
202
Location
USA
Vehicle(s)
2022 392, 2020 JLUR, 2015 JKR
Occupation
Retired
Not a complaint, just a mildly interesting story ?

So, you know how it is. You’re just mozying along in your 392, minding your own business, listening to the dulcet tones of that V8 burble when some wannabe racer comes along in its lowered Civic and sits 2 inches from your bumper that has more steel in it than the entire Civic.

Twice now I’ve had this happen, and the miscreant in the Civic will sit on my ass until I hit a section of road where we suddenly have two lanes. Of course by the time I get there I’m annoyed, so hit that Offroad+ button, stomp on the skinny pedal, and release all 470 glorious ponies. Just to get some space between me and the idiot on my ass, of course.

And of course, every damn time, the Civic driver will try and race me. Thing is, this is a ~2 mile uphill section of road, relatively steep, with a few sweeping bends, so the Civic’s 4-pot just isn’t going to be able to pass. I’ll admit I toyed with it a few times and let it almost catch up, but for the most part had my foot all the way in the corner.

The power steering pump overheating warning came on about half way up the hill, both times. No discernible lack of steering assistance though. After the first time I actually cut out a chunk of the inner liner on the passenger side to aide airflow, but it still overheated the second time (recovered a lot faster though).

I think what’s happening here is a combination of a few things:
1. When all 470 ponies are being fed to the drivetrain, the natural tendency is for the steering to mostly center (allowing for some skew from the center-offset diff of course), and so on a road with swooping curves, the steering is constantly fighting this tendency;
2. I’m running 37’s, which probably put even more strain on the steering, making that pump work even harder;
3. That beast under the hood is suddenly generating a metric f-ton of extra heat.

Anyway, I’m not too concerned. Definitely edge cases, and I’ve never seen it overheat on the trail, even in 100º weather. I’ve seen someone posting that they installed a fan in front of the pump which has helped them, and am toying with the idea, but I’m not yet convinced it’s worth the effort just for the rare occasion I need to deal with some idiot who overestimates their vehicle’s ability to stop.
Sponsored

 

jludave

Well-Known Member
First Name
Dave
Joined
Feb 13, 2020
Threads
13
Messages
4,158
Reaction score
4,287
Location
The Isle of Long
Vehicle(s)
2020 Wrangler Unlimited Sport Altitude
Occupation
IT Manager
Vehicle Showcase
1
Clubs
 
I’m not yet convinced it’s worth the effort just for the rare occasion I need to deal with some idiot who overestimates their vehicle’s ability to stop.
How about dealing with it by not racing on public roads?
 

DonH63

Well-Known Member
First Name
Don
Joined
Jun 22, 2023
Threads
2
Messages
10,745
Reaction score
61,155
Location
Monument, CO
Vehicle(s)
21 GC Trailhawk, 23 JLU 392 XR
Occupation
Retired EE; musician (trumpet)
I've gotten the steering overheat light on most every trip in the summer after an hour or two on the trail, never on the road there or back that I recall. Looked into a couple of power steering kits but they are expensive and take some work to install so I've just let it go. Never had a significant loss of steering (knock on wood). Heard about folk adding a fan on the pump but have not looked into it; sounds like a reasonable solution if the fan is protected from mud and stuff.
 

Sponsored

OP
OP

kkarnage

Well-Known Member
Joined
May 6, 2020
Threads
26
Messages
204
Reaction score
202
Location
USA
Vehicle(s)
2022 392, 2020 JLUR, 2015 JKR
Occupation
Retired
I've gotten the steering overheat light on most every trip in the summer after an hour or two on the trail, never on the road there or back that I recall. Looked into a couple of power steering kits but they are expensive and take some work to install so I've just let it go. Never had a significant loss of steering (knock on wood). Heard about folk adding a fan on the pump but have not looked into it; sounds like a reasonable solution if the fan is protected from mud and stuff.
Yeah, I've seen discussion about other power steering kits that have coolers for the fluid. But as a few folk pointed out, whilst the fluid cooling is all well and good, it's not the fluid overheating, it's the electric motor powering the pump that's overheating, and so fitting a different kit may not solve the actual problem, since none of the pumps from these kits appeared to have any additional fins or anything to increase the pump motor's outer surface area.

And yes, debris in the fan was a thought that had crossed my mind. That said, the pump itself, and the area immediately in front of it weren't particularly dirty on my Jeep, and I've been Offroad in some reasonably serious muck. It was dusty, but not in a way that would immediately clog up a cooling fan.
 

DonH63

Well-Known Member
First Name
Don
Joined
Jun 22, 2023
Threads
2
Messages
10,745
Reaction score
61,155
Location
Monument, CO
Vehicle(s)
21 GC Trailhawk, 23 JLU 392 XR
Occupation
Retired EE; musician (trumpet)
Yeah, I've seen discussion about other power steering kits that have coolers for the fluid. But as a few folk pointed out, whilst the fluid cooling is all well and good, it's not the fluid overheating, it's the electric motor powering the pump that's overheating, and so fitting a different kit may not solve the actual problem, since none of the pumps from these kits appeared to have any additional fins or anything to increase the pump motor's outer surface area.

And yes, debris in the fan was a thought that had crossed my mind. That said, the pump itself, and the area immediately in front of it weren't particularly dirty on my Jeep, and I've been Offroad in some reasonably serious muck. It was dusty, but not in a way that would immediately clog up a cooling fan.
That matches what heard; more the electric pump than the fluid. One kit replaced the pump, but installed was wicked expensive, so I passed (for now, anyway). Watching to see if you (or someone) has a good solution; last year when I looked I did not find good pictures of a solution (one guy used a clamp-on 12 V fan but it did not look road worthy, let alone off-road worthy).

I did think about getting some sort of heat sink fins for the motor but didn't pursue, winter came...
 
OP
OP

kkarnage

Well-Known Member
Joined
May 6, 2020
Threads
26
Messages
204
Reaction score
202
Location
USA
Vehicle(s)
2022 392, 2020 JLUR, 2015 JKR
Occupation
Retired
That matches what heard; more the electric pump than the fluid. One kit replaced the pump, but installed was wicked expensive, so I passed (for now, anyway). Watching to see if you (or someone) has a good solution; last year when I looked I did not find good pictures of a solution (one guy used a clamp-on 12 V fan but it did not look road worthy, let alone off-road worthy).

I did think about getting some sort of heat sink fins for the motor but didn't pursue, winter came...
I too briefly contemplated additional heatsink fins for the motor, but didn’t spend a whole lot of time doing so. Access to that space is a nightmare, so any mods are going to involve removing bits to get at it, which I just know I’ll regret.
 

DonH63

Well-Known Member
First Name
Don
Joined
Jun 22, 2023
Threads
2
Messages
10,745
Reaction score
61,155
Location
Monument, CO
Vehicle(s)
21 GC Trailhawk, 23 JLU 392 XR
Occupation
Retired EE; musician (trumpet)
I too briefly contemplated additional heatsink fins for the motor, but didn’t spend a whole lot of time doing so. Access to that space is a nightmare, so any mods are going to involve removing bits to get at it, which I just know I’ll regret.
Great minds and all that jazz... I looked up there whilst putting on skids and decided it was not an immediate need. I found (and have since lost) a place selling fans shaped like a flashlight that I thought about (trying to) mount so as to direct air right at the pump, but never got a round tuit.
 

BijanF

Well-Known Member
First Name
Bijan
Joined
May 11, 2022
Threads
17
Messages
110
Reaction score
356
Location
Bozeman MT
Vehicle(s)
Wrangler 392 AEV JL370 - Ram Power Wagon
My JL370 392 has the power steering light come on minutes after I start it on a cool morning. The engine isn’t even to temp while I’m creeping out of my driveway. It is now coming on almost every drive, with no noticeable effect to the performance of the steering. Also, other random dash light will flash on momentarily when the chime and light come on. They never stay on. It must be a loose connection somewhere. I checked the ground bolts and they’re tight. At this point I’m at a loss.
‘22 with 8,300 miles
 

Sponsored

OP
OP

kkarnage

Well-Known Member
Joined
May 6, 2020
Threads
26
Messages
204
Reaction score
202
Location
USA
Vehicle(s)
2022 392, 2020 JLUR, 2015 JKR
Occupation
Retired
My JL370 392 has the power steering light come on minutes after I start it on a cool morning. The engine isn’t even to temp while I’m creeping out of my driveway. It is now coming on almost every drive, with no noticeable effect to the performance of the steering. Also, other random dash light will flash on momentarily when the chime and light come on. They never stay on. It must be a loose connection somewhere. I checked the ground bolts and they’re tight. At this point I’m at a loss.
‘22 with 8,300 miles
Not specifically power steering related, but you should check the connections on the CANBUS connector bar (I think that’s what it’s called) behind the glovebox.
 

Camaroboi13

Well-Known Member
First Name
Justin
Joined
May 23, 2023
Threads
16
Messages
1,597
Reaction score
2,903
Location
San Bernardino, CA
Vehicle(s)
2022 JTOD, 2024 JLU W
Occupation
LEO... life in Chino
Clubs
 
Not specifically power steering related, but you should check the connections on the CANBUS connector bar (I think that’s what it’s called) behind the glovebox.
From what I’ve read, that’s likely the culprit. I had to swerve on the highway and at that exact moment my power steering just stopped altogether. When I slowed down to get off the highway everything started working again below 15mph. Only had it happen once, no lights no nothing. Seems like glovebox Canbus is what everyone points to.
 

Tank2112

Well-Known Member
First Name
Darryl
Joined
Apr 12, 2023
Threads
7
Messages
174
Reaction score
140
Location
FL
Vehicle(s)
2023 Wrangler 392XR, Custom Jeep LJ
Some are solving electric power steering overheating issue by installing an electric fan in front of pump. All that have posted about doing this so far have been successful.

Another option, around $1,500 is bolt on plug-n-play PSC XD electronic pump replacement. They come with or without a cooling reservoir.

Or look into Apex kit that boosts stock pumps pressure, along with cooling reservoir...but also install electric fan in front. Connect fan to a factory AUX switch for when needed?

From what I've read, the issue is the factory electric pump overheating, not so much the fluid.
 
 







Top