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bobbyblack  Samba Member

Joined: May 21, 2015 Posts: 4598 Location: United States, Iowa
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Posted: Wed Mar 05, 2025 1:24 pm Post subject: Re: Official lazy person's stupid question thread |
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Wildthings wrote: |
bobbyblack wrote: |
Anyway, my O2 is functioning correctly. My Temp 2 is a problem, perhaps I have (as my spare) ECT sensor (Temp 2) that is from a different year as I believe I see on a vendor listing '86-'87, then '88-'91 for which sensor to purchase. |
I believe the TSII sensors for the Digifant are all the same excepting on the Syncro. You are likely thinking the sender for the gauge which is a different elephant. |
I am so confused (and somewhat embarrassed) that I often do not even ask stuff, sorry. The one I have for the dash has a round plug wire end (well, almost round anyway) I think, and that is not the one I am trying to see if I am correct about going to the ECU is a rectangular connector, and new ones from various vendors are blue plastic, they used to be black.
Am I right that the blue one with the rectangular plug is for the ECU, and if so, is it called temp 2 (TSII)? Like this (and now I see '86-'91)?
https://vancafe.com/coolant-temp-sensor-86-to-91-2wd/
I have three of these, and they all behave differently
I have two of these and have not tried the second one yet:
https://vancafe.com/coolant-temperature-sensor-for-1986-87-vans-w-o-ring/
Thanks again,
-bobby _________________ '87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
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E1 Samba Member
Joined: January 21, 2013 Posts: 8230 Location: Westfalia, Earth
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Posted: Wed Mar 05, 2025 1:45 pm Post subject: Re: Official lazy person's stupid question thread |
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Blue is Temp II.
Black is for the gauge.
I do not think they’re interchangeable. The design is awful, and one reason we went to an aluminum thermostat housing that uses the screw-in Temp II that were used on 1.9s. _________________ 1984 Westfailure/2.1 Digijet/5.43 Ring & Pinion/Peloquin/D-rated BFG KO2s
AI has spoken to further illiteracy, to steal, to cheat, and to replace humans
"Adding power makes you faster on the straights.
Subtracting weight makes you faster everywhere." — Colin Chapman |
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bobbyblack  Samba Member

Joined: May 21, 2015 Posts: 4598 Location: United States, Iowa
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Posted: Wed Mar 05, 2025 2:16 pm Post subject: Re: Official lazy person's stupid question thread |
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E1 wrote: |
Blue is Temp II.
Black is for the gauge.
I do not think they’re interchangeable. The design is awful, and one reason we went to an aluminum thermostat housing that uses the screw-in Temp II that were used on 1.9s. |
E1,
Thanks, thought so, but now doubting myself more than ever before.
The aluminum T-stat housing is on my 'needs it' list, and likely it will be going up in price after stock on hand is depleted
-bobby _________________ '87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
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Wildthings Samba Member

Joined: March 13, 2005 Posts: 52081
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Posted: Wed Mar 05, 2025 5:23 pm Post subject: Re: Official lazy person's stupid question thread |
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bobbyblack wrote: |
Am I right that the blue one with the rectangular plug is for the ECU, and if so, is it called temp 2 (TSII)? Like this (and now I see '86-'91)?
https://vancafe.com/coolant-temp-sensor-86-to-91-2wd/
I have three of these, and they all behave differently  |
These FI temperature sensors just need to fall within the range given in the Bentley so can vary quite a bit from each other and typically are working well enough if they cause they O2 system to go closed loop by the time the coolant exceeds 160°F.
There are the sending units for the gauge on the dash and are not the TS2 (Temperature Sensor II). |
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bobbyblack  Samba Member

Joined: May 21, 2015 Posts: 4598 Location: United States, Iowa
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Posted: Thu Mar 06, 2025 10:38 am Post subject: Re: Official lazy person's stupid question thread |
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Wildthings wrote: |
These FI temperature sensors just need to fall within the range given in the Bentley so can vary quite a bit from each other and typically are working well enough if they cause they O2 system to go closed loop by the time the coolant exceeds 160°F.
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Good, thanks. Trouble is this; The TS2 I have in there now is showing between 30 and 50 deg F above actual coolant temps at ambient temp coolant at startup, and almost 100 deg F high on the warmed up engine, so the O2 starts doing its "thing" way too early.
Luckily, I have a brandy new TS2 (thanks for confirmations) arriving by tomorrow afternoon.
Still hopeful to find a workable extension tube to allow me to get the AFM airbox a few more inches away so I can get at the injector and spark wires under it while running the engine. ---I believe though, that the AFM signal is depricated once the engine reaches full temp--- let me know in the comments . Maybe I have some close sized hoses that I can duct tape in place somewhere in my mayhem of hoards. (My hoard is NOT the only hoard at my home, I suffer from multiple generations of family members that seem to have left the building, but their hoards of crap are still in situ.)
PS. the backfiring seems to be getting worse, I must certainly have a bad ignition wire, or plug --- I certainly have had brandy new spark plugs be bad out of the box. I don't think I would have a locked closed or clogged injector that would cause a backfire. I guess it could be stuck open? I did run several types of injector cleaners through a number of tanks with no resolution. Other possibilities exist, but I don't want to guess at several of them that could give me nightmares. It is entirely clear I am down one cylinder at all times as of this morning.
Thanks,
-bobby _________________ '87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
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bobbyblack  Samba Member

Joined: May 21, 2015 Posts: 4598 Location: United States, Iowa
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Posted: Fri Mar 07, 2025 5:43 pm Post subject: Re: Official lazy person's stupid question thread |
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Well, okay. I'm realizing that my #2 cylinder is not making fire.
So, after swapping in a known good ignition wire for #2, with same results, I went to the injector wire, having gotten my noid test light on arrival home tonight. Confirmed that the wires are all functioning properly.
Means tomorrow will be injector test/swap on right side rail. I did get a spare Gold Mansi injector for such a problem, but sure wish I'd gotten some number more than one, as it would make the work of swapping the entire rail + injectors so much more convenient. Oh well, some day I'll order another 5 injectors for the 'spare bus' and life will start working out a tad bit more easily...
BTW, thanks for all of the help, and patience with my dimness.
_________________ '87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
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bobbyblack  Samba Member

Joined: May 21, 2015 Posts: 4598 Location: United States, Iowa
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Posted: Sat Mar 08, 2025 2:13 pm Post subject: Re: Official lazy person's stupid question thread |
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Fixed stupid part, just had to not be lazy. _________________ '87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
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E1 Samba Member
Joined: January 21, 2013 Posts: 8230 Location: Westfalia, Earth
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Posted: Sat Mar 08, 2025 4:47 pm Post subject: Re: Official lazy person's stupid question thread |
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Replaced the injector?
(Full Disclosure: I cheated) _________________ 1984 Westfailure/2.1 Digijet/5.43 Ring & Pinion/Peloquin/D-rated BFG KO2s
AI has spoken to further illiteracy, to steal, to cheat, and to replace humans
"Adding power makes you faster on the straights.
Subtracting weight makes you faster everywhere." — Colin Chapman |
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bobbyblack  Samba Member

Joined: May 21, 2015 Posts: 4598 Location: United States, Iowa
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Posted: Sat Mar 08, 2025 7:20 pm Post subject: Re: Official lazy person's stupid question thread |
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Well, it seemed stupid enough to try. But I was convinced that the stock plastic rail would probably try to kill me if I didn't replace it with a modern solution. The spare injector needed was literally stashed in the last place I would have ever looked... Hence everything out, and also digging in my other stash locations, it took 4 hours to get everything together enough to 'do the job'
Thanks E1, you've been awesome help on this obviously stupid and lazy trek !!!!!!!
Cheers!!
-bobby _________________ '87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
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E1 Samba Member
Joined: January 21, 2013 Posts: 8230 Location: Westfalia, Earth
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Posted: Sat Mar 08, 2025 7:28 pm Post subject: Re: Official lazy person's stupid question thread |
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You’re welcome Bud, you’ve certainly helped us before!
Nothing stupid about this issue, they can never be easy! _________________ 1984 Westfailure/2.1 Digijet/5.43 Ring & Pinion/Peloquin/D-rated BFG KO2s
AI has spoken to further illiteracy, to steal, to cheat, and to replace humans
"Adding power makes you faster on the straights.
Subtracting weight makes you faster everywhere." — Colin Chapman |
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uberaudi Samba Member
Joined: June 24, 2013 Posts: 609 Location: Hi-top Country
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Posted: Sat Mar 15, 2025 8:09 am Post subject: Re: Official lazy person's stupid question thread |
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Does anyone know the dimensions of the hollow dowel pins that mate the diesel block to the bellhousing? _________________ '84 Adventurewagen 1Z TDI, '08 Audi Avant Quattro 6spd BHW TDI |
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AndyBees Samba Member

Joined: January 31, 2008 Posts: 2578 Location: Southeast Kentucky
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Posted: Sat Mar 15, 2025 9:57 am Post subject: Re: Official lazy person's stupid question thread |
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uberaudi wrote: |
Does anyone know the dimensions of the hollow dowel pins that mate the diesel block to the bellhousing? |
When this storm passes, I'll go to my garage and measure! Right now it is raining cats & dogs in my neck of the woods. _________________ '84 Vanagon Tin-top, ALH TDI, two trips to Alaska, 2014 & 16. 1989 Tin-top unmolested.
1983 Air-cool, 225k miles, 180k miles mine, seven trips to Alaska from 1986 thru 2003. 1975 Bay hopeful. |
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uberaudi Samba Member
Joined: June 24, 2013 Posts: 609 Location: Hi-top Country
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Posted: Sat Mar 15, 2025 10:05 am Post subject: Re: Official lazy person's stupid question thread |
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Thanks Andy! Stay dry! _________________ '84 Adventurewagen 1Z TDI, '08 Audi Avant Quattro 6spd BHW TDI |
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AndyBees Samba Member

Joined: January 31, 2008 Posts: 2578 Location: Southeast Kentucky
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Posted: Sat Mar 15, 2025 11:15 am Post subject: Re: Official lazy person's stupid question thread |
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uberaudi wrote: |
Thanks Andy! Stay dry! |
Okay, both the two holes in the bell housing measure 16mm as well as the two dowels on the engine. _________________ '84 Vanagon Tin-top, ALH TDI, two trips to Alaska, 2014 & 16. 1989 Tin-top unmolested.
1983 Air-cool, 225k miles, 180k miles mine, seven trips to Alaska from 1986 thru 2003. 1975 Bay hopeful. |
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uberaudi Samba Member
Joined: June 24, 2013 Posts: 609 Location: Hi-top Country
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Posted: Sat Mar 15, 2025 11:36 am Post subject: Re: Official lazy person's stupid question thread |
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Thank you Andy! _________________ '84 Adventurewagen 1Z TDI, '08 Audi Avant Quattro 6spd BHW TDI |
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bobbyblack  Samba Member

Joined: May 21, 2015 Posts: 4598 Location: United States, Iowa
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Posted: Tue Mar 25, 2025 6:26 am Post subject: Re: Official lazy person's stupid question thread |
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Question of the day, stupid or lazy, or not;
Can a small amount of water, perhaps having gotten into the filter and freezing, break a hole in the filter that could lead to injector clogging? I think I got some water in my gas somehow in the middle of the winter. (No, it's not cracked evap tanks, or failed roll over valve seals)
Reason for the stupid question is that now that I have found and fixed the no-fire issue in my #2 cylinder, my #3 is now starting to display the same symptoms (no heat at the exhaust port header, until the engine is entirely warmed up). This time I don't have a spare injector on hand though... I guess I need to order some number more of them...
I did go through multiple bottles of various injector cleaners, they sure did not fix the #2 cylinder issue.
-bobby _________________ '87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
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dhaavers Samba Member

Joined: March 19, 2010 Posts: 8264 Location: NE MN (tinyurl.com/dhaaverslocation)
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Posted: Tue Mar 25, 2025 7:03 am Post subject: Re: Official lazy person's stupid question thread |
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Bobby, I have a whole handful of used spare injectors available…how soon you need them?
- Dave _________________ 86 White Wolfsburg Westy Weekender
"The WonderVan"
<EDITED TO PROTECT INNOCENT PIXELS> |
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bobbyblack  Samba Member

Joined: May 21, 2015 Posts: 4598 Location: United States, Iowa
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Posted: Tue Mar 25, 2025 7:46 am Post subject: Re: Official lazy person's stupid question thread |
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Dave,
Thanks for the offer. I too, have multiple sets of used. I could go back to stock, yes. But what I have are the specialized higher flow units offered by a favorite vendor of ours
Again tho, the problem mysteriously goes away when the engine gets warmed up. I don't have any understanding of how an injector could go from not working below 40F on cold start to working just fine by the time I get 6 miles down the road.
-bobby _________________ '87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
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Wildthings Samba Member

Joined: March 13, 2005 Posts: 52081
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Posted: Tue Mar 25, 2025 8:46 am Post subject: Re: Official lazy person's stupid question thread |
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bobbyblack wrote: |
Dave,
Thanks for the offer. I too, have multiple sets of used. I could go back to stock, yes. But what I have are the specialized higher flow units offered by a favorite vendor of ours
Again tho, the problem mysteriously goes away when the engine gets warmed up. I don't have any understanding of how an injector could go from not working below 40F on cold start to working just fine by the time I get 6 miles down the road.
-bobby |
After my 91 sat for three years with a full tank of ethanol lace fuel in it, the injectors tended to stick when they sat for a while. Whether over night or just for 10 minutes at a gas station. It took 70 tanks of fuel before the gum that had formed in the tank finally cleared up completely. |
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bobbyblack  Samba Member

Joined: May 21, 2015 Posts: 4598 Location: United States, Iowa
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Posted: Tue Mar 25, 2025 10:35 am Post subject: Re: Official lazy person's stupid question thread |
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Wildthings, thanks!
I think my plan for now is to wait for the one new injector to arrive (I think by this weekend) and replace the #3, along with the plastic rail on driver side.
Further steps will have to include robbing my stash; I've got a new fuel tank, new pump, new filter, fuel tank reseal kit, and sundries. But, maybe that will wait a couple more weeks. I can't see doing the pump and filter if the tank is full of crap, but maybe I am not looking at everything from a high enough level to have my brain process the path properly. Suggestions welcome.
I planed to order a full injector set + a spare for the 'spare' Westy, which gets driven only a fer days a week, and 5 to 6 big trips a year (my kids love borrowing it). Anyway, when I get the new set, I can send this now 6 year old set of Gold injectors in for cleaning, then I can put that old set in the spare bus...
Man, having multiple T3's gets to be big money fast. And I was already flipped out about having/paying for just one!
-bobby _________________ '87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
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