AHC Help messed up while doing testing (1 Viewer)

[y5359]

I ran 5 more tests with the temp sensor plugged back in (still getting DTC that it is not in techstream) my pressures were much more consistant.

6.4 front 6.4 rear 93 temp
6.2 front 6.4 rear 95 temp
6.2 front 6.3 rear 95 temp
6.1 front 6.3 rear 95 temp
6.2 front 6.3 rear 97 temp

Should I adjust the TBs to add back some pressure? I took pictures of the full techstream data for each cycle if you need me to upload them let me know. Thanks again for all the help.

 

[y5359]

I ran 5 more tests with the temp sensor plugged back in (still getting DTC that it is not in techstream) my pressures were much more consistant.

6.4 front 6.4 rear 93 temp
6.2 front 6.4 rear 95 temp
6.2 front 6.3 rear 95 temp
6.1 front 6.3 rear 95 temp
6.2 front 6.3 rear 97 temp

Should I adjust the TBs to add back some pressure? I took pictures of the full techstream data for each cycle if you need me to upload them let me know. Thanks again for all the help.

I adjusted the TB 3 turns (2 driver one passenger side) to get my front pressure up and adjusted my rear height sensor up. It was all the way at the bottom. Ran three test. Here are the screen shots first 2 had very low front readings 3 I took it to high and then low and got a reading about where I thought it should be. Any ideas why I’m getting low readings sometimes?

 

[Africaster]

I adjusted the TB 3 turns (2 driver one passenger side) to get my front pressure up and adjusted my rear height sensor up. It was all the way at the bottom. Ran three test. Here are the screen shots first 2 had very low front readings 3 I took it to high and then low and got a reading about where I thought it should be. Any ideas why I’m getting low readings sometimes?

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Not enough rust …

 

[2001LC]

I adjusted the TB 3 turns (2 driver one passenger side) to get my front pressure up and adjusted my rear height sensor up. It was all the way at the bottom. Ran three test. Here are the screen shots first 2 had very low front readings 3 I took it to high and then low and got a reading about where I thought it should be. Any ideas why I’m getting low readings sometimes?

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I'm assuming your a stock 2006, based on signture line "2006 LX 470". On level ground, 3rd row in, full tank of gas and no one in vehicle or gear added weight. Not loaded or heavy built. If a heavy built, things need to be addressed first! I also assume you've confirmed OEM newer Globes (they do have date codes on them).

I see 1 trouble code. It's likely temp DTC. But do check and clear.

Was lock nut secure, or was arm moving freely in rear slide. All three sensor arm lock nuts, must be secure. Otherwise height of vehicle and pressure will keep changing.

Did ball joints of sensor arm(s) move freely. If not, they've frozen and arm(s) needs replacing. We're see more and more of these ball joints freeze up, with age. If frozen they can cause arm to move out of position in slide, may bend arm and or damage sensor.

You're changing vehicle height, as you move arm in slide and or turn buckle in front adjuster. This puts more weight on AHC system as you raise vehicle, taking off springs and T-bars. System does tend to glitch more, if to high out of spec pressure. It is moving the sensor adjuster(s) that raises and lower your vehicle. Adjusting T-bars, does not raise or lower vehicle. They're used to cross level and to change pressure.

I do sometimes get a glitch in Tech stream. I find going into from N to H, than to back to N and than to L and back to N to taking Mpa reading. Pausing a few seconds between each change and waiting 10 second or more before taking Mpa readings. I get a more consistent readings.

Once you've made sure all as it should be. If Mpa keeps changing and the fact PO replaced pump and globes (IIRC you said), indicates he had issues. Whereas some replace globes as a PM, they don't R&R pump as such. I'll point back to post #16, a short.

Note: Take height measurements from axle center to fender is very useful, but not book (FSM) method. If vehicle had even a little fender bender, these measurements are off. Also import to be consistent when taking measurement. I find marking grease cap center, and use chrome hub cap removal bar (in tool kit), with a level on it for rear axle, very helpful.

 

[thibaut]

I think tou may want to re-index the torsion bar at the front. That will give you plenty of adjustment.
It’s quite frequent the rear pressure remains a bit high when tou have all heights at correct level, this is due to rear springs sagging over time. You can switch for beefier springs or add a spacer.

 

[2001LC]

Something is going on here. Either he's messing up procedural, which he's been unclear on adjustment, measurements and than Mpa afterward. But if he' got it dialed in and pressure keep changing. He likely has a short.

@suprarx7nut was first to find a short in rear 1/4 wiring. He alerted me to it. It's a bear to track down, if ones first time dealing with. It can be near impossible when we other issues in the system, like senors issues. So very import to go thought inspect each sensor first, also run through pump, controller, etc test which are in FSM.

 

[y5359]

Thanks everyone for the help. I think the graduation test was probably accurate and my globes are pretty much shot. I purchased my LX from a supporting vendor on this site and he showed me a receipt from eBay but I didn’t verify until now and it looks like he lied. My globes have the white tags on them and I was able to read the date on one 2004 so they appear to be original. I ordered new globes from Impex yesterday.

 

[suprarx7nut]

Something is going on here. Either he's messing up procedural, which he's been unclear on adjustment, measurements and than Mpa afterward. But if he' got it dialed in and pressure keep changing. He likely has a short.

@suprarx7nut was first to find a short in rear 1/4 wiring. He alerted me to it. It's a bear to track down, if ones first time dealing with. It can be near impossible when we other issues in the system, like senors issues. So very import to go thought inspect each sensor first, also run through pump, controller, etc test which are in FSM.

I wonder if a height sensor is a little wonky and it's changing the "neutral height" just a tad each time, yielding different pressures. Either way, if this was my car I'd call it good.

Thanks everyone for the help. I think the graduation test was probably accurate and my globes are pretty much shot. I purchased my LX from a supporting vendor on this site and he showed me a receipt from eBay but I didn’t verify until now and it looks like he lied. My globes have the white tags on them and I was able to read the date on one 2004 so they appear to be original. I ordered new globes from Impex yesterday.

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Nice work. That's a good plan to replace the globes. They're intended to be replaced every so often just like you would change out traditional shocks. Perhaps you'll see some improvement in measurement stability, but I'm pretty certain you'll feel a big difference in the ride quality.

*EDIT: Also, perhaps you mentioned this, but what trouble code are you getting/ I keep seeing "Number of Trouble Codes: 1" in your screenshots.

 

[y5359]

I wonder if a height sensor is a little wonky and it's changing the "neutral height" just a tad each time, yielding different pressures. Either way, if this was my car I'd call it good.



Nice work. That's a good plan to replace the globes. They're intended to be replaced every so often just like you would change out traditional shocks. Perhaps you'll see some improvement in measurement stability, but I'm pretty certain you'll feel a big difference in the ride quality.

*EDIT: Also, perhaps you mentioned this, but what trouble code are you getting/ I keep seeing "Number of Trouble Codes: 1" in your screenshots.

I wonder if a height sensor is a little wonky and it's changing the "neutral height" just a tad each time, yielding different pressures. Either way, if this was my car I'd call it good.



Nice work. That's a good plan to replace the globes. They're intended to be replaced every so often just like you would change out traditional shocks. Perhaps you'll see some improvement in measurement stability, but I'm pretty certain you'll feel a big difference in the ride quality.

*EDIT: Also, perhaps you mentioned this, but what trouble code are you getting/ I keep seeing "Number of Trouble Codes: 1" in your screenshots.

I was not getting any codes originally with the system. Only code I ever got was when the oil temp sensor was unplugged. It cleared it self the first time I plugged it back on but didn’t clear from then on and I did not go in to manually clear it. Car was driving much better and bouncy ride was pretty much gone after getting pressure closer. Impex has crazy prices on the globes right now so makes sense to get them switched out.

 

[y5359]

Received and installed new globes. Car rides much better and am now getting over 12 on graduation test. Cycled the AHC from high to low 3 times and pressure readings all pretty close.

 

[uHu]

TechStream reports "Number of Trouble Codes = 1" ?

 

[TexLexican]

Thanks everyone for the help. I think the graduation test was probably accurate and my globes are pretty much shot. I purchased my LX from a supporting vendor on this site and he showed me a receipt from eBay but I didn’t verify until now and it looks like he lied. My globes have the white tags on them and I was able to read the date on one 2004 so they appear to be original. I ordered new globes from Impex yesterday.

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Which vendor so we know who to avoid?

 

[y5359]

Which vendor so we know who to avoid?

musthave

I'm still putting money into maintenance items he said were done rather than into dissent bumpers, roof rack, sliders, etc.

I created a buyer beware post Here

 

[y5359]

TechStream reports "Number of Trouble Codes = 1" ?

Its from when I had the temp sensor unplugged. I haven't cleared it yet in techstream