Rear suspension, not pumping up, orange suspension signal in the dash, new pump runs for 30 seconds or so, and shuts off without adjusting the rear, and the rear is squatting all the way down.

this suspension wasn’t working when he bought the rig and he replaced the front air valve block. Everything worked for about 8 months.

don’t have the scanner to plug in to check the voltage going to the sensors etc. but he did put in a new rear air valve block today and the same thing happens. It turns on for about 30 seconds and does not adjust the rear whatsoever.

I searched some rubber parts, and I found that on one of the rover pages there’s a schematic of the air system, and there is another component with a sensor in it called Bob leveling air suspension front axle. It is number four on the schematic and it has a sensor in it that is labeled, Sensor air suspension Rr Sport.

could that sensor in that block be the reason why the air pump only runs for 30 seconds and then shuts off?

My whole beef with his system is it consistently runs for 20 to 30 seconds and then shuts off without adjusting any of the heights of the rig so it has to be a over pressure sensor or an under pressure sensor that is causing it to shut off or maybe something that is a Time out sensor when it runs for a certain amount of preset time and then get shut off by the computer. Like a fuel pump. And then the ride level in the dash turns yellow every time the pump shuts off..
my whole beef with his system is it consistently runs for 20 to 30 seconds and then shuts off without adjusting any of the heights of the rig so it has to be a overpressure sensor or an under pressure sensor that is causing it to shut off or maybe something that is a timeout sensor when it runs for a certain amount of preset time and then gets shut off by the computer. Like a fuel pump. And then the ride level in the dash turns yellow every time the pump shuts off.

so is there any information you guys can give me that will help diagnose this?

 

I hit submit before I could look and check the box notify me of replies, so be patient if it takes me a minute to come back and see any replies, you guys may give.

I appreciate you All. Thank you.

 

I would really recommend you to read the codes rather than throwing the parts cannon at the problem. You will most likely also need a decent OBD tool to read the galley pressure among other things.
If the compressor runs constantly and then shuts down, it probably is overheating.

 

It runs for 30 seconds. It’s not overheating. And it’s a brand new pump.

 

Here are the only codes. They’ve been there for about a year. The rear air bag filling issue has only been there two weeks.

 

The motor doesn’t have time to over heat.

what’s the component dead center over rear axle bolted to the frame called?

 

Thats the rear valve block.

Without reading codes or getting live data, it’s hard to trouble shoot. Since the compressor runs for 30 seconds I agree that it’s not cutting out due to temp. Just an educated guess, but it is more likely cutting out due to a “pressure not increasing fault”.

If the rear isn’t raising, there is probably a leak in the reservoir or an issue with the rear valve block. The springs should raise off of reservoir pressure, and the rear raises first. You might start by checking the reservoir it for leaks, second would be the desiccant canister cap for a crack. If you search the forum you will find more info on both of these common issues.

 

Number 5 and number 3 in this schematic have been replaced.

the front block just under year ago, the suspension began working normal after that. Then just recently it stopped again.

teying to get a good timeline of everything he did in a row is difficult.

today part 3 was replaced.

no change in pump reaction.

not replaced is #5 and it’s specific location is unknown by me. That’s the only part listed with a pressure sensor. Perhaps it trips because it’s bad and shuts off pump before the pressure is enough to lift the rear.

the reservoir does not leak. I also could not find any compromised o rings or seals.

repeated shutting off and starting to get a total of a few minutes of pump run time does nothing.

this schematic does not list the part bolted dead center over third member, so I cannot research it’s purpose.

I’ve used search function here and on goodie to poor results.

the codes present as of now are listed above in the picture I. My earlier post.

 

You need to get an IIDTool and correctly diagnose the situation. Read the faults while the yellow fault icon is lit. The reason why you aren't seeing a suspension related fault per your pic above is because your code reader is a piece of $hit. The EAS is not that complicated or difficult to diagnose, but you have to have the proper tools.

 

All the lld I’ve seen are n England and run over 250 bucks. I should tell my buddy to scrap the pos lmao.

I’ll tell him that’s what he’s gott do to get all the codes.
my 30 dollar scanner does more than his orange large screen multi function reader 🤣🤣