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      03-29-2021, 10:56 AM   #2553
JScheier
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Quote:
Originally Posted by dogbone View Post
Went to High Plains to test the car today.

The two problems were a limp mode due to the brake booster vacuum pump not turning on, and power steering issues.
On the E92 GTS car, we ended up wiring the vacuum pump to a switch in the cabin to power it the entire time we were on track. Just got tired of it turning off / not turning on at all during a race. The switch was the easy button.
(unless you are me and forget to flip the switch...usually you figure it out as you are going into turn 1 at HPR, three wide, and hit the pedal).
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      03-29-2021, 10:58 AM   #2554
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Originally Posted by Bartledoo View Post
Your rpm dependent symptoms sound like mine when my pump was going out. Also it would just stop working mid turn on track, which tried to kill me. But you put in a known good pump so that's weird.
It's weird right? Yeah, maybe a brand new pump needs to go in......
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      03-29-2021, 11:01 AM   #2555
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Quote:
Originally Posted by JScheier View Post
On the E92 GTS car, we ended up wiring the vacuum pump to a switch in the cabin to power it the entire time we were on track. Just got tired of it turning off / not turning on at all during a race. The switch was the easy button.
(unless you are me and forget to flip the switch...usually you figure it out as you are going into turn 1 at HPR, three wide, and hit the pedal).
haha I bet you only forget to do that ONCE! hahahaha

Interesting solution to hard wire it. Do you ever burn out the pump because it runs constantly?

For now, the pump issue seems solved. I suspect as these cars get older, the ground just gets flaky due to so much crap going on in the engine bay with fluid sprays and spills and heat and dirt. You just need to go in and clean it up. Interestingly, Chris is getting the same limp mode. He installed a supercharger which required attaching a ground and now he's having some issues. He's going to look at ground now.
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      03-29-2021, 11:16 AM   #2556
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Quote:
Originally Posted by dogbone View Post
haha I bet you only forget to do that ONCE! hahahaha
One would think....apparently I'm a slow learner Usually takes the turn 4 braking zone before it clicks and I need to turn it on.

Quote:
Interesting solution to hard wire it. Do you ever burn out the pump because it runs constantly?
Yes, that is one of the fears. It's wired so that it's off once the master power is off. Was going to try to wire it into a measurement point on the AIM to trigger pump activation... but sold the car...so no longer an issue for us

Last edited by JScheier; 03-29-2021 at 11:29 AM..
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      03-29-2021, 11:34 AM   #2557
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Quote:
Originally Posted by JScheier View Post
Quote:
Originally Posted by dogbone View Post
haha I bet you only forget to do that ONCE! hahahaha
One would think....apparently I'm a slow learner Usually takes the turn 4 braking zone before it clicks and I need to turn it on.

Quote:
Interesting solution to hard wire it. Do you ever burn out the pump because it runs constantly?
Yes, that is one of the fears. It's wired so that it's off once the master power is off. Was going to try to wire it into a measurement point on the AIM to trigger pump activation... but sold the car...so no longer an issue for us
Most of us are just used to driving a street car on track where everything is automatic. It's easy to forget until it becomes routine.
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      03-29-2021, 11:36 AM   #2558
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Quote:
Originally Posted by JScheier View Post
One would think....apparently I'm a slow learner Usually takes the turn 4 braking zone before it clicks and I need to turn it on.
haha!

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Originally Posted by JScheier View Post
but sold the car...so no longer an issue for us
Ah.....that's one way to solve problems I guess.....What are you in now?
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      03-29-2021, 12:26 PM   #2559
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Ah.....that's one way to solve problems I guess.....What are you in now?
I'm back in my S54 swapped E36 in GTS3.
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      03-29-2021, 12:31 PM   #2560
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Originally Posted by PrimeBMW View Post
Most of us are just used to driving a street car on track where everything is automatic. It's easy to forget until it becomes routine.
It makes matters worse when you are jumping in and out of several cars....I don't need a stinkin switch in any of the other cars, just the E92.
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      03-30-2021, 08:39 AM   #2561
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In a supercharged Z4M we ran into terminal brake booster issues. Ended up running an aftermarket vacuum pump that is switched on whenever the car is at the track
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      Yesterday, 09:54 AM   #2562
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We've continued working on the power steering issues. On March 28th, I went out to the track with brand new power steering lines and hoses. Did two laps, had steering problems and left the track within an hour of arrival. On the bright side, the limp mode from the brake vacuum pump appears to be fixed now.

At the end of that very short track day, the power steering was permanently screwed. Previously, the loss of power steering would only appear when the car was hot. But after those two laps, the power steering was gone----unless----you revved the heck out of the engine and the steering loosened up.

We decided we needed a new power steering pump. So, I got a remanufactured pump. It was installed this week.

A couple things give me hope. One of the things that's been confounding everyone is that there has been no visible flow of power steering fluid in the reservoir. Either the fluid has been static in the reservoir, or it's been a gloppy movement in the reservoir----like a lava lamp. But now, with the new pump, we were looking at the fluid movement yesterday and it was flowing smoothly like a river in the reservoir---nice constant flow.

Also, at the last minute yesterday, we decided to ditch the Bimmerworld power steering reservoir and get a new stock one. The BW reservoir never solved my fluid spraying problems, so I wasn't in love with it. But it turns out there was something else to consider----the BW reservoir does not have a filter in it while the stock one does. Also, the outlet port is not at the bottom of the BW reservoir while the stock outlet port is at the center bottom, which may have some implications on how debris settles in the reservoir. So the BW reservoir is out and a new stock one is back in. We are exploring the idea of an inline filter that can be replaced because there's a fair amount of shimmering metal in there even after SEVERAL complete fluid flushes to get rid of it. The stock reservoir's filter is not replaceable.....you have to replace the whole unit.

So, I'm signed up to run at HPR tomorrow. I'm hopeful that a new pump will solve the situation. We'll see.
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      Yesterday, 12:19 PM   #2563
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I learned the hard and expensive way that if you’re going to replace a power steering component you will be better served to replace everything. As parts wear they send tiny plastic and metal particles through the system, leading to a never ending goose egg hunt. Best of luck!


Quote:
Originally Posted by dogbone View Post
We've continued working on the power steering issues. On March 28th, I went out to the track with brand new power steering lines and hoses. Did two laps, had steering problems and left the track within an hour of arrival. On the bright side, the limp mode from the brake vacuum pump appears to be fixed now.

At the end of that very short track day, the power steering was permanently screwed. Previously, the loss of power steering would only appear when the car was hot. But after those two laps, the power steering was gone----unless----you revved the heck out of the engine and the steering loosened up.

We decided we needed a new power steering pump. So, I got a remanufactured pump. It was installed this week.

A couple things give me hope. One of the things that's been confounding everyone is that there has been no visible flow of power steering fluid in the reservoir. Either the fluid has been static in the reservoir, or it's been a gloppy movement in the reservoir----like a lava lamp. But now, with the new pump, we were looking at the fluid movement yesterday and it was flowing smoothly like a river in the reservoir---nice constant flow.

Also, at the last minute yesterday, we decided to ditch the Bimmerworld power steering reservoir and get a new stock one. The BW reservoir never solved my fluid spraying problems, so I wasn't in love with it. But it turns out there was something else to consider----the BW reservoir does not have a filter in it while the stock one does. Also, the outlet port is not at the bottom of the BW reservoir while the stock outlet port is at the center bottom, which may have some implications on how debris settles in the reservoir. So the BW reservoir is out and a new stock one is back in. We are exploring the idea of an inline filter that can be replaced because there's a fair amount of shimmering metal in there even after SEVERAL complete fluid flushes to get rid of it. The stock reservoir's filter is not replaceable.....you have to replace the whole unit.

So, I'm signed up to run at HPR tomorrow. I'm hopeful that a new pump will solve the situation. We'll see.
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      Yesterday, 12:22 PM   #2564
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Hopefully it works. Otherwise the next step is a cup car electric power steering pump.
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      Yesterday, 09:22 PM   #2565
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Quote:
Originally Posted by dogbone View Post
So, I'm signed up to run at HPR tomorrow. I'm hopeful that a new pump will solve the situation. We'll see.
I shall also be out there tomorrow. Black E36, #86 GTS3. Should be a silver E36 sedan with GTS3 stickers as well... I'll be in one of those two cars most of the day.
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