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Re: Puzzle - Searching Idle (Only with headlights on)
Great problem solving Wayne. I’ll run a jumper as soon as I won’t get into trouble for working on the van during the holiday!!!
I was pondering the alternator as a source of the problem as well.
Headlights turn on, increasing demand from alternator.
Alternator puts additional drag on engine, causing stumble at stop.
Just enough additional load in combination with drag caused by torque converter.
Will let you know.
Best,
Brent
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Re: Puzzle - Searching Idle (Only with headlights on)
Could it be the alternator. I seem to recall some engine weirdness with a faulty alternator. Edit: Fault in your alt to post in black box to Subaru harness? Try running a jumper from alt post to post in black box to see if any change. Loose post connection in black box?
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Hi Todd, That's my vote too. Fuel pressure regulator. It is letting the fuel pressure bleed off in the manifold to injectors. Paul?
On Sun, Dec 24, 2023 at 2:25?PM Wayne Sitarz < wesitarz@...> wrote: Fuel pressure regulator?
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I have had the same issue on my 05 Chevy Suburban. I know apples and oranges but hear me out.? My fuel pump was bad. It had a small leak in the internal diaphragm that would slowly leak the fuel pressure were it was difficult to start at first but once going it ran flawlessly unless it sat for about 6 hours, then it would act up again. Once I replaced the pump, no more problems starting at first key turn with almost instantaneous starting.? I hope this helps.?
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On Dec 23, 2023, at 7:25?PM, todd s via groups.io <tsorel1600@...> wrote:
?I converted my 86 Westy to EG33/Subarugears back in 2018 and everything has been peachy until recently. I now need to crank the van for quite some time before it starts. Once it does, it fires right off and idles like there was no problem. I can immediately turn it off and restart with no problem so I don’t think it’s a coolant temperature thing. If it sits overnight, the problem pops up again. It doesn’t seem like it’s flooded as holding the throttle wide open makes no difference. I ?can also let the fuel pump cycle a few times and, no difference. It seems more like an ignition problem than a fuel one though it runs perfectly once it has started. I have read where someone else with a EG33/Impreza swap had the same problem and everyone suggested the coolant sensor but it made no difference to him. The coolant doesn’t warm up without the engine running… Mine sounds like exactly the same problem. Has anyone experienced this?
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I converted my 86 Westy to EG33/Subarugears back in 2018 and everything has been peachy until recently. I now need to crank the van for quite some time before it starts. Once it does, it fires right off and idles like there was no problem. I can immediately turn it off and restart with no problem so I don’t think it’s a coolant temperature thing. If it sits overnight, the problem pops up again. It doesn’t seem like it’s flooded as holding the throttle wide open makes no difference. I ?can also let the fuel pump cycle a few times and, no difference. It seems more like an ignition problem than a fuel one though it runs perfectly once it has started. I have read where someone else with a EG33/Impreza swap had the same problem and everyone suggested the coolant sensor but it made no difference to him. The coolant doesn’t warm up without the engine running… Mine sounds like exactly the same problem. Has anyone experienced this?
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Re: Where does vacuum for air lockers tie into Subaru?
翱濒驳别濒濒别谤….. If you’re wondering where the brake booster nipple is on your suby engine I’ve got a picture to reference. Take a look at this…. | |
Just above the pointing finger is a nipple with a hose connected, secured with a stainless steel hose clamp. ?
That’s the brake booster vacuum source. ?Tap into that line for a good vacuum source for your locker(s).
Best,
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On Dec 23, 2023, at 8:41?AM, SEAN GARRETT via groups.io <doit.outdoors@...> wrote:
I second that, my brake booster line goes into a threaded nipple on drivers side of intake manifold. Then my vac for locker etc lines tie into it later down the line.
On Dec 23, 2023, at 9:34?AM, adam warner <madaterb@...> wrote:
?Should be threaded bosses on top of the intake facing the transmission. (Fwd in aft engine van) brake booster should be run separate in my opinion. It also needs a check valve inline so as not to feed back to engine.
I have had to drill and tap in the past as there was only one for the brakes.
Re: Where does vacuum for air lockers tie into Subaru?
I second that, my brake booster line goes into a threaded nipple on drivers side of intake manifold. Then my vac for locker etc lines tie into it later down the line.
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On Dec 23, 2023, at 9:34?AM, adam warner <madaterb@...> wrote:
?Should be threaded bosses on top of the intake facing the transmission. (Fwd in aft engine van) brake booster should be run separate in my opinion. It also needs a check valve inline so as not to feed back to engine.
I have had to drill and tap in the past as there was only one for the brakes.
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Re: Where does vacuum for air lockers tie into Subaru?
Should be threaded bosses on top of the intake facing the transmission. (Fwd in aft engine van) brake booster should be run separate in my opinion. It also needs a check valve inline so as not to feed back to engine.
I have had to drill and tap in the past as there was only one for the brakes.
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Re: Puzzle - Searching Idle (Only with headlights on)
Thanks Wayne and Sean. I’ll check my vss wiring to be sure it’s behaving. I’ve converted my headlights to led so there shouldn’t be much current draw BUT I did remove my dash last year (to replace heater fan motor) so wiring in that area is suspect.? Will keep you all posted on what I find.? Best Brent
On Saturday, December 23, 2023, SEAN GARRETT via <doit.outdoors= [email protected]> wrote: My thought is the lights trigger it so maybe thats where you should start ? Looking at light connections/grounds. Sean On Dec 23, 2023, at 12:35?AM, Wayne Sitarz <wesitarz@...> wrote:
?Sold my van. On a retired visa in Thailand. Do you have 12v going to your Smallcar VSS? I wonder if the voltage could be fluctuating. The Smallcar VSS does work on 5v from the ECU which would be more stable. I would sometimes get a little blip of rpm at a stop light when I took my foot off the brake, but nothing that I was concerned about. Is your NSwitch grounded or disconnected?
-- Brent Weide
Portland, Oregon
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Re: Puzzle - Searching Idle (Only with headlights on)
My thought is the lights trigger it so maybe thats where you should start ? Looking at light connections/grounds. Sean
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On Dec 23, 2023, at 12:35?AM, Wayne Sitarz <wesitarz@...> wrote:
?Sold my van. On a retired visa in Thailand. Do you have 12v going to your Smallcar VSS? I wonder if the voltage could be fluctuating. The Smallcar VSS does work on 5v from the ECU which would be more stable. I would sometimes get a little blip of rpm at a stop light when I took my foot off the brake, but nothing that I was concerned about. Is your NSwitch grounded or disconnected?
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Re: Puzzle - Searching Idle (Only with headlights on)
Sold my van. On a retired visa in Thailand. Do you have 12v going to your Smallcar VSS? I wonder if the voltage could be fluctuating. The Smallcar VSS does work on 5v from the ECU which would be more stable. I would sometimes get a little blip of rpm at a stop light when I took my foot off the brake, but nothing that I was concerned about. Is your NSwitch grounded or disconnected?
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Re: Puzzle - Searching Idle (Only with headlights on)
I should clarify. This only ever happens when the auto tranny is in drive or reverse, never in neutral or park. Good advice on checking the grounds Sean. ?I’ll do that. ?Thanks. Best,
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On Dec 22, 2023, at 8:38?AM, SEAN GARRETT via groups.io <doit.outdoors@...> wrote:
Perhaps the ole cliche... but sometimes works... check your grounds, especially under dash near steering column (on left). I would also check engine bay grounds to. Moist wet environment sitting....
Sean G
On Friday, December 22, 2023 at 09:26:36 AM MST, Brent Weide <brent.weide@...> wrote:
Happy holidays gang.? Hope this finds you all well and happy.
I've got a head scratcher for you all.
1999 Subaru EJ25 DOHC in a 1991 Vanagon Multivan w/ Automatic Transmission
I don't drive her much anymore as I spend all my time in Mexico and the van stays back home in Oregon.? I feel adequately guilty about that.
I've got a problem with idle that is easily reproducible.? With engine warm (or cold), transmission in drive, vehicle stationary, headlights off, the idle is smooth and right around 750.? Life is good.
Same conditions as above but now I turn on my headlights.? Idle begins to cycle, it surges to around 1500 and slowly tapers off to around 700 or so where it again surges.? Over and over.? This is uncomfortable as the vehicle is trying to leap forward with the surge and it just ain't right.
I've got a smallcar vss on the cv but have not tested it recently.? Doesn't make sense to me that it's faulty as the only thing that's changing that causes the surging is more alternator draw because of the headlights being on.
Anyone have any suggestions for troubleshooting?
Appreciate your support.
Brent
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Re: Where does vacuum for air lockers tie into Subaru?
I usually put a t in the brake booster line
Good morning oldgeller.
I did some searching as related to your question and couldn't find an easy answer.
With very limited knowledge of anything related to drivetrain on a syncro I hesitate to answer your question.
But I am bumping this conversation in order to get the attention of everyone on the group that has a converted syncro.....how are your locker switch hoses fed?
Another suggestion is to take the question over to thesamba or the syncro site.? Thats a syncro specific crowd and they should be knowledgeable enough to answer your question.??/g/Syncro
Best of luck to you and sorry I couldn't be more helpful.
Best,
Brent
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Re: Van/Westy Xmas Tree Ornament
Thank you very much! ?Merry Christmas ??
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On Dec 22, 2023, at 9:05?AM, Bob Stevens <mtbiker62@...> wrote:
? For your tree …
Vanagon Westy Christmas tree ornament time. The URL:?
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Van/Westy Xmas Tree Ornament
For your tree …
Vanagon Westy Christmas tree ornament time. The URL:?
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Re: Puzzle - Searching Idle (Only with headlights on)
Perhaps the ole cliche... but sometimes works... check your grounds, especially under dash near steering column (on left). I would also check engine bay grounds to. Moist wet environment sitting....
Sean G
On Friday, December 22, 2023 at 09:26:36 AM MST, Brent Weide <brent.weide@...> wrote:
Happy holidays gang.? Hope this finds you all well and happy.
I've got a head scratcher for you all.
1999 Subaru EJ25 DOHC in a 1991 Vanagon Multivan w/ Automatic Transmission
I don't drive her much anymore as I spend all my time in Mexico and the van stays back home in Oregon.? I feel adequately guilty about that.
I've got a problem with idle that is easily reproducible.? With engine warm (or cold), transmission in drive, vehicle stationary, headlights off, the idle is smooth and right around 750.? Life is good.
Same conditions as above but now I turn on my headlights.? Idle begins to cycle, it surges to around 1500 and slowly tapers off to around 700 or so where it again surges.? Over and over.? This is uncomfortable as the vehicle is trying to leap forward with the surge and it just ain't right.
I've got a smallcar vss on the cv but have not tested it recently.? Doesn't make sense to me that it's faulty as the only thing that's changing that causes the surging is more alternator draw because of the headlights being on.
Anyone have any suggestions for troubleshooting?
Appreciate your support.
Brent
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Re: Where does vacuum for air lockers tie into Subaru?
Good morning oldgeller. I did some searching as related to your question and couldn't find an easy answer. With very limited knowledge of anything related to drivetrain on a syncro I hesitate to answer your question. But I am bumping this conversation in order to get the attention of everyone on the group that has a converted syncro.....how are your locker switch hoses fed? Another suggestion is to take the question over to thesamba or the syncro groups.io site.? Thats a syncro specific crowd and they should be knowledgeable enough to answer your question.?? /g/SyncroBest of luck to you and sorry I couldn't be more helpful. Best, Brent
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Puzzle - Searching Idle (Only with headlights on)
Happy holidays gang.? Hope this finds you all well and happy.
I've got a head scratcher for you all.
1999 Subaru EJ25 DOHC in a 1991 Vanagon Multivan w/ Automatic Transmission
I don't drive her much anymore as I spend all my time in Mexico and the van stays back home in Oregon.? I feel adequately guilty about that.
I've got a problem with idle that is easily reproducible.? With engine warm (or cold), transmission in drive, vehicle stationary, headlights off, the idle is smooth and right around 750.? Life is good.
Same conditions as above but now I turn on my headlights.? Idle begins to cycle, it surges to around 1500 and slowly tapers off to around 700 or so where it again surges.? Over and over.? This is uncomfortable as the vehicle is trying to leap forward with the surge and it just ain't right.
I've got a smallcar vss on the cv but have not tested it recently.? Doesn't make sense to me that it's faulty as the only thing that's changing that causes the surging is more alternator draw because of the headlights being on.
Anyone have any suggestions for troubleshooting?
Appreciate your support.
Brent
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Where does vacuum for air lockers tie into Subaru?
Hi, I have been a member for years but never used the forum so I don’t know how to do this but I have had a lot of different people with their hands in my van and am realizing I need to do it myself.
I found the thick plastic air / vacuum hose that runs from my locker switches to engine bay just laying against the firewall and I don’t see anywhere obviousthat they should attach on my Subaru motor ?
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Brent Weide
John
Bob Stevens