Re: What does it mean when engine backfires during cold start
Air conditioner compressor control is almost the?same on every?car until very recently.
This is a job for someone who knows the subaru boxer engines and their ECUs.? ?Otherwise you'll likely pay for a long learning curve..? ?.? ? On Mon, Mar 20, 2023 at 7:41?PM John Lauterbach via <cigtoxdoc= [email protected]> wrote: Thank you to all for your helpful suggestions.? After years with waterboxer engines, and almost four years of trouble-free operations with the engine in my Subie vanagon, I have never needed to learn how to work on the Subaru engine.? Believe the engine is from a 1995 Subaru sedan.? I have a mechanic in Deland, who recently did some work for me on the sliding door.? I do not know his experience with Subaru engines other than he said he would be able to hook up the A/C compressor on the Subie engine to the remainder of the air conditioning system.
John
-- Eric Freudenthal Ph.D. (he/his/him/himself) Spouse, dad, friend < eric@...> It is now no more that toleration is spoken of as if it were the indulgence of one class of people that another enjoyed the exercise of their inherent natural rights, for, happily, the Government of the United States, which gives to bigotry no sanction, to persecution no assistance, requires only that they who live under its protection should demean themselves as good citizens in giving it on all occasions their effectual support.? George Washington, 1790
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Re: What does it mean when engine backfires during cold start
Thank you to all for your helpful suggestions.? After years with waterboxer engines, and almost four years of trouble-free operations with the engine in my Subie vanagon, I have never needed to learn how to work on the Subaru engine.? Believe the engine is from a 1995 Subaru sedan.? I have a mechanic in Deland, who recently did some work for me on the sliding door.? I do not know his experience with Subaru engines other than he said he would be able to hook up the A/C compressor on the Subie engine to the remainder of the air conditioning system.
John
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Re: What does it mean when engine backfires during cold start
Sounds like a lean "pop" on cold start. Fuel management diagnosis is super easy and most above average techs should have no problem with that. An injector problem would be constant, timing as well. Grounds are always critical, but they are easiest to verify and diagnose (check my other posts). Start with verifying long term fuel trims as they are controlling fuel on cold start. any minor problems hot which are being compensated by closed loop will have major effect on warmup. Check coolant temp and intake temps should be the same on startup. check MAP voltages if speed density or do Volumetric Efficiency test if Air flow controlled. Range test o2 sensors. All should take 10 minutes. If your tech doesn't understand, find a new tech.
Richard Stratford
CA BAR certified Instructor and Technician 23 ASE certificates ?
On Monday, March 20, 2023 at 04:57:29 PM PDT, Noras dad <norasonlydad@...> wrote:
Hey John, The injectors in these engines can't be refurbished. Ask your mechanic to replace all of them with new ones. Check the lines, if any look suspect change them all.
It kinda sounds like you may have a leaky/pissing injector. It sound's like the fuel in one of them isn't atomising properly. Once that cylinder gets hotter that condition will go away. Get all four injectors changed, cos chances are they have all done the same amount of work. I never clean/refurb/change one on an engine. Bon chance
On Fri, 17 Mar 2023 at 16:57, John Lauterbach via <cigtoxdoc= [email protected]> wrote: My '91 Subie Vanagon just started backfiring on cold start.? Engine runs fine once started.
What does that mean?? What should I tell my mechanic to do?
Thank you,
John
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Re: What does it mean when engine backfires during cold start
Hey John, The injectors in these engines can't be refurbished. Ask your mechanic to replace all of them with new ones. Check the lines, if any look suspect change them all.
It kinda sounds like you may have a leaky/pissing injector. It sound's like the fuel in one of them isn't atomising properly. Once that cylinder gets hotter that condition will go away. Get all four injectors changed, cos chances are they have all done the same amount of work. I never clean/refurb/change one on an engine. Bon chance
On Fri, 17 Mar 2023 at 16:57, John Lauterbach via <cigtoxdoc= [email protected]> wrote: My '91 Subie Vanagon just started backfiring on cold start.? Engine runs fine once started.
What does that mean?? What should I tell my mechanic to do?
Thank you,
John
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Re: What does it mean when engine backfires during cold start
Google: (Subaru) engine backfires when cold or during cold start for some information. A good mechanic or technician will listen to your description of symptoms but not your diagnosis. Your should be reading engine codes for a start if you want to DIY.
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Re: What does it mean when engine backfires during cold start
I have lots of backfires when I first hooked up my transplanted EJ22.? ?They were caused by my not realizing that The ECUs signal ground (connected to the engine) and power ground needed to be separate.? Eric Freudenthal
sent from my mobile
It kinda sounds like you may have a leaky/pissing injector. It sound's like the fuel in one of them isn't atomising properly. Once that cylinder gets hotter that condition will go away. Get all four injectors changed, cos chances are they have all done the same amount of work. I never clean/refurb/change one on an engine. Bon chance
On Fri, 17 Mar 2023 at 16:57, John Lauterbach via <cigtoxdoc= [email protected]> wrote: My '91 Subie Vanagon just started backfiring on cold start.? Engine runs fine once started.
What does that mean?? What should I tell my mechanic to do?
Thank you,
John
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Re: What does it mean when engine backfires during cold start
It kinda sounds like you may have a leaky/pissing injector. It sound's like the fuel in one of them isn't atomising properly. Once that cylinder gets hotter that condition will go away. Get all four injectors changed, cos chances are they have all done the same amount of work. I never clean/refurb/change one on an engine. Bon chance
On Fri, 17 Mar 2023 at 16:57, John Lauterbach via <cigtoxdoc= [email protected]> wrote: My '91 Subie Vanagon just started backfiring on cold start.? Engine runs fine once started.
What does that mean?? What should I tell my mechanic to do?
Thank you,
John
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Re: What does it mean when engine backfires during cold start
John: Do you have a way to scan the motor for codes? If not, secondary guessing would indicate a timing related issue. The major pieces that would cause this condition if failed are cam position sensor, crank position sensor or timing belt alignment. If these
are all good, report back. Also, what year and model is the donor engine from??
Dale Daugherty
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On Mar 20, 2023, at 2:54 AM, John Lauterbach via groups.io <cigtoxdoc@...> wrote:
?I have hoping for a more complete answer.? This is my third Vanagon and the first with a Subaru engine.?? Van is in Deland, FL.?
Is it safe to run the van after engine backfires during starting?
I have had van since 2019, and engine operation has been perfect until now.
Some technical assistance would be appreciated.
Thank you,
John
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Re: What does it mean when engine backfires during cold start
I have hoping for a more complete answer.? This is my third Vanagon and the first with a Subaru engine.?? Van is in Deland, FL.?
Is it safe to run the van after engine backfires during starting?
I have had van since 2019, and engine operation has been perfect until now.
Some technical assistance would be appreciated.
Thank you,
John
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Re: What does it mean when engine backfires during cold start
Not intended as snarky...but really...
Aren't they the mechanic that should be telling you what it needs?
Once it's in, there is nothing different about a Subaru engine in a VW or Subaru. Andy
505-304-5306
On Fri, Mar 17, 2023, 2:57 PM John Lauterbach via <cigtoxdoc= [email protected]> wrote: My '91 Subie Vanagon just started backfiring on cold start.? Engine runs fine once started.
What does that mean?? What should I tell my mechanic to do?
Thank you,
John
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What does it mean when engine backfires during cold start
My '91 Subie Vanagon just started backfiring on cold start.? Engine runs fine once started.
What does that mean?? What should I tell my mechanic to do?
Thank you,
John
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Hoping this is resolved since it is an older thread but. . .I had a crank/no start recently on a SVX. This was after reinstalling a radio, cigarette lighter and electrical volt meter behind the dash. I retraced and cleaned everything, literally. with no luck. Replaced ECU with no luck. No CEL codes so assumption was cam and crank sensors were good. I replaced the main relay and fuel pump relay out of frustration even though they tested okay. Started right up with much joy!
On a side note, hope all our West Coast brethren are okay.
--
Freedom van Go
1989 Westy, 3.3L SVX
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Re: 96 legacy (not outback) engine
Christopher, I would rely on the independent Subaru mechanics in your area, they should know of differences. Paul
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On Mar 11, 2023, at 7:41 AM, Christoph Pistor <cpistor@...> wrote:
?Dear Forum,
I have a 86 van with a 92 EJ22 engine that blew. Can I replace the long block with an ej22 from a 96 legacy (non outback)?
Thank you for your help.
C.
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96 legacy (not outback) engine
Dear Forum,
I have a 86 van with a 92 EJ22 engine that blew. Can I replace the long block with an ej22 from a 96 legacy (non outback)?
Thank you for your help.
C.
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Re: O2 sensor Bank 1 sensor 2
how did you resolve this?
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Yes, the engine was running before the swap but I had the long block rebuilt. ?From there I replaced all the sensors. ?Every one of them. ?It is basically a brand new motor. ?It's all Subaru. ?What I am doing now is connecting the VSS. ?It was a nice day and I was in town (we have had nice days but I also travel for my job so its hit or miss). ?I had already purchased the GW cruise so I am going to use that VSS in a custom way. ?I removed the cluster and mounted the VSS. ?I then ran a 10 conductor cable from the dash to the engine bay which was about has far as I got today figuring all this out. ?My plan is to install the CC in the engine bay along with a small panel to connect the VSS, limit switches and controls. ?I will run the VSS to the CC as it is 12V but split it to another circuit with a relay with supplied 5V from the ECU and run that signal back to the VSS on the harness. ?My hopes is that will finally conquer the high idle issue.?
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Re: Evoscan . speed sensor signal . & other signals
HA ¡... I obsess about minimizing exposed parts under my Syncro.
Funny story, The picture associated with my account show my bus sitting in a slurry of salt water and sand . we drove the beach at low tide for ?30 miles south of Golfo de Santa Clara to fish and camp . ?once in a while a panga with local
fishermen might drift by and wave . driving back I sunk in some wet sand? up to the sliding door . tide was coming in and I was about to start removing anything salvageable . In the end, The Mexican federales who had been spying on us all week appeared out
of nowhere and yanked me out with their Hummer (2 ford explorers in our group couldn¡¯t do it) . That was with the ?VW engine on board . Since then I have added every possible skid plate and removed anything that didn¡¯t have to be under there. So ¡ I actually
have two different wheel mounted ?ones on the shelf in my garage purchased when I did my first conversion in the early 2000¡¯s .. ?but ?I am in the camp of using the speed sensor in the Instrument cluster . ?maybe I¡¯m lucky with the OBD 1 setup I have but I
never had an issue. its only when I used evoscan while diving that I noticed the 2x speed. For the syncro I suspect someone has tried to use the ?propshaft for a signal which would keep things a foot higher out of the elements.
?
Cheers
?
M
?
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From: [email protected] < [email protected]>
On Behalf Of TTT via groups.io
Sent: Thursday, February 23, 2023 12:35 PM
To: [email protected]
Subject: Re: [SubaruVanagon] Evoscan . speed sensor signal . & other signals
?
Can you not use a hall effect speed sensor and ring on your CV for this?
?
Austin Nichols
Owner/Engineer
(253) 473-2474
View our terms and conditions
?
?
Baja Dan maybe ?? He spent a huge amount of time on the issue and gauge replacements .?
?
On Feb 16, 2023, at 2:29 PM, mark via groups.io <mark@...> wrote:
?
I think what is most important is that your VSS can show some variability in speed, and indicate 0 mph.? I installed a Dakota Digital interface.? Mine was installed quite some time ago so I can¡¯t comment on the new versions, but mine works
great.? It allows me to dial in the speed to match my GPS.? Small enough to fit inside the instrument cluster housing and fairly easy to install.? I had gotten the idea from another list member however I can¡¯t recall who.?
?
Mark
¡¯89 Westy Syncro
?
?
Hi .?
?I am doing my best with evoscan without support .?
?quick question .?
?I know there are many ways to get a speed signal back to the ECU . Mine is a sensor off the back of the speedometer . i drove while logging data with the EVOscan yesterday and to my surprise I am reading a much higher speed than indicated on the speedometer
of GPS . . I have used this setup for 100k miles on the previous longblock so i cant imagine it's that big of an issue but has anyone seen the need to adjust the speed feed ...?
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Re: Evoscan . speed sensor signal . & other signals
Can you not use a hall effect speed sensor and ring on your CV for this?
?
Austin Nichols
Owner/Engineer
(253) 473-2474
View our terms and conditions
?
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From: [email protected] < [email protected]>
On Behalf Of Dr Mark via groups.io
Sent: Thursday, February 16, 2023 2:58 PM
To: [email protected]
Subject: Re: [SubaruVanagon] Evoscan . speed sensor signal . & other signals
?
Baja Dan maybe ?? He spent a huge amount of time on the issue and gauge replacements .?
On Feb 16, 2023, at 2:29 PM, mark via groups.io <mark@...> wrote:
?
I think what is most important is that your VSS can show some variability in speed, and indicate 0 mph.? I installed a Dakota Digital interface.? Mine was installed quite some time ago so I can¡¯t comment on the new versions, but mine works
great.? It allows me to dial in the speed to match my GPS.? Small enough to fit inside the instrument cluster housing and fairly easy to install.? I had gotten the idea from another list member however I can¡¯t recall who.?
?
Mark
¡¯89 Westy Syncro
?
?
Hi .?
?I am doing my best with evoscan without support .?
?quick question .?
?I know there are many ways to get a speed signal back to the ECU . Mine is a sensor off the back of the speedometer . i drove while logging data with the EVOscan yesterday and to my surprise I am reading a much higher speed than indicated on the speedometer
of GPS . . I have used this setup for 100k miles on the previous longblock so i cant imagine it's that big of an issue but has anyone seen the need to adjust the speed feed ...?
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Re: Main relay stays on with engine off, key out!
It should connect through a fuse to ignition power through the ignition switch. Use a test light to make sure you are connecting to ignition switched power? (at the black box?)
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Re: Main relay stays on with engine off, key out!
0 degrees today...dang...I really need a heated garage ;-)? Looks to be warmer this weekend and I can try to find this wire coming out of the other side of the harness.? I seem to remember one labeled ignition, but that could be my dreaming! --Greg
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Duncan
Dr Mark