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binger59
Samba Member
Joined: December 09, 2007
Posts: 236
Location: Oswego, NY
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 Posted: Sat Jan 16, 2016 4:53 am Post subject: Stumble and die hall sensor? |
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Hey volks
It's an 86 2.1, stumbled and stalled the other day and wouldn't restart. Added gas thinking it was perhaps empty, nothing. Got her home did some trouble shooting and it wasn't getting any fuel to the test "T". Change the pump and voila she started. Took it on a test run and it runs fine for 1/4 mile and starts to stumble again. Here's where I'm confused a bit, if I bumb the key off just for a split second it acts as though it's been reset. It drives normal again for 1/4-1/2 mile and then the same. The hall sensors is hanging off distr. body this is what I'm thinking maybe the problem. Does this sound like a faulty pump or bad hall sensor. The pump came off another van so not brand new but did previously work on van it was removed from. Any help from you guys would be greatly apreiciated.
_________________
Binger
1984 Westy
1986 7 Pass R.I.P. Donor van
2019 Jetta
2014 Passat
2019 Atlas
2006 Passat R.I.P.
1998 Jetta R.I.P.
1984 Vanagon R.I.P. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32596
Location: Reading Pennsylvania
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binger59
Samba Member
Joined: December 09, 2007
Posts: 236
Location: Oswego, NY
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| Posted: Sat Jan 16, 2016 6:55 am Post subject: Re: Stumble and die hall sensor? |
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Thanks Dave, I have a extra switch I'll give it a try.
_________________
Binger
1984 Westy
1986 7 Pass R.I.P. Donor van
2019 Jetta
2014 Passat
2019 Atlas
2006 Passat R.I.P.
1998 Jetta R.I.P.
1984 Vanagon R.I.P. |
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heidi85ho
Samba Member
Joined: October 17, 2009
Posts: 298
Location: Williamsburg,Virginia
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| Posted: Sun Jan 17, 2016 7:37 am Post subject: Re: Stumble and die hall sensor? |
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If the hall sensor is "hanging off the distributor" it would be in your best interest to also fix that. It may or may not be a contributor to your current problem but will present its own set of issues if left hanging.
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85 westy-1.9-standard trans, FAS GenV 2.0 |
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insyncro
Banned
Joined: March 07, 2002
Posts: 15086
Location: New York
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| Posted: Sun Jan 17, 2016 8:19 am Post subject: Re: Stumble and die hall sensor? |
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Even with brand new dizzies I reinforce the Hall's connection to the dist.
One heavy handed maneuver and it can be compromised.
I use Wurth Fix All, a two part epoxy that is very strong...a tiny bit goes a long way. |
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binger59
Samba Member
Joined: December 09, 2007
Posts: 236
Location: Oswego, NY
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| Posted: Mon Jan 18, 2016 12:20 pm Post subject: Re: Stumble and die hall sensor? |
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update:
I hooked up my shoebox ecu monitor and I have hall signal and injector signals. Fuel pump is also running ok according to the monitor. I started it up and swapped an ignition switch on the fly and it ran fine.Then started to stumble after it was slightly warm. Wouldn't restart battery was dead. I got it on a charger and still will run if I bump the key off then back on real quick. Are there any other Ideas I may be missing Bad battery perhaps? It's on the charger now. Not easy to work on here in the frigid north. Any help is greatly appreciated.
_________________
Binger
1984 Westy
1986 7 Pass R.I.P. Donor van
2019 Jetta
2014 Passat
2019 Atlas
2006 Passat R.I.P.
1998 Jetta R.I.P.
1984 Vanagon R.I.P. |
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sharkfoodjohnny
Samba Member
Joined: March 14, 2014
Posts: 1
Location: Northern Cal
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| Posted: Mon Jan 18, 2016 12:28 pm Post subject: Re: Stumble and die hall sensor? |
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| I had a very similar problem recently and changed the O2 sensor. Its been working fine the last 200 miles so I assume that was the problem. |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50338
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| Posted: Mon Jan 18, 2016 12:47 pm Post subject: Re: Stumble and die hall sensor? |
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| binger59 wrote: |
update:
I hooked up my shoebox ecu monitor and I have hall signal and injector signals. Fuel pump is also running ok according to the monitor. I started it up and swapped an ignition switch on the fly and it ran fine.Then started to stumble after it was slightly warm. Wouldn't restart battery was dead. I got it on a charger and still will run if I bump the key off then back on real quick. Are there any other Ideas I may be missing Bad battery perhaps? It's on the charger now. Not easy to work on here in the frigid north. Any help is greatly appreciated. |
You have something that is causing a misfire which the O2 sensor reads as an overly lean mixture causing the ECU to dump in way too much fuel which causes the misfire to rapidly get worse to the point the engine will not run. You need to find the original cause of the misfire: plugs, wires, clogged injector, etc. |
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binger59
Samba Member
Joined: December 09, 2007
Posts: 236
Location: Oswego, NY
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| Posted: Mon Jan 18, 2016 1:33 pm Post subject: Re: Stumble and die hall sensor? |
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Just took it for a test drive with the 02 sensor disconnected. And it drove fine as it has until it's slightly warm, I wouldn't say at operating temp though. Disconnected the temp 2 sensor as well. Wild things would this show me anything? I did notice on the shoebox that I'm not get any signal from the tps fully open or closed. Could this be a culprit? It drives normal after the key bumb is what has me stumped. Does this reset the ecu every time? it's the only way I've gotten it home the last few trips.
_________________
Binger
1984 Westy
1986 7 Pass R.I.P. Donor van
2019 Jetta
2014 Passat
2019 Atlas
2006 Passat R.I.P.
1998 Jetta R.I.P.
1984 Vanagon R.I.P. |
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insyncro
Banned
Joined: March 07, 2002
Posts: 15086
Location: New York
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| Posted: Mon Jan 18, 2016 2:04 pm Post subject: Re: Stumble and die hall sensor? |
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| Adjust TPS and tell us. |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50338
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| Posted: Mon Jan 18, 2016 3:09 pm Post subject: Re: Stumble and die hall sensor? |
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| binger59 wrote: |
| Just took it for a test drive with the 02 sensor disconnected. And it drove fine as it has until it's slightly warm, I wouldn't say at operating temp though. Disconnected the temp 2 sensor as well. Wild things would this show me anything? I did notice on the shoebox that I'm not get any signal from the tps fully open or closed. Could this be a culprit? It drives normal after the key bumb is what has me stumped. Does this reset the ecu every time? it's the only way I've gotten it home the last few trips. |
If disconnecting the O2 sensor keeps it from messing up, then what I said above is going to apply, you have something causing a miss that is being interpreted as a lean mixture. |
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binger59
Samba Member
Joined: December 09, 2007
Posts: 236
Location: Oswego, NY
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| Posted: Mon Jan 18, 2016 6:23 pm Post subject: Re: Stumble and die hall sensor? |
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Wildthings it did the same stumble with the o2 disconnected it just took slightly longer to develop and it was cold. Had to bump the key the last 4 or so miles to get it home. I have injectors I can try haven't been used in years though, they've been wrapped in plastic with the intent of being rebuilt. I also have plugs and a couple spare wires that I can try. Checking the injector connectors is a pain with out someone turning the key. WTF this is a real pain in the a$$.
_________________
Binger
1984 Westy
1986 7 Pass R.I.P. Donor van
2019 Jetta
2014 Passat
2019 Atlas
2006 Passat R.I.P.
1998 Jetta R.I.P.
1984 Vanagon R.I.P. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32596
Location: Reading Pennsylvania
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binger59
Samba Member
Joined: December 09, 2007
Posts: 236
Location: Oswego, NY
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| Posted: Mon Jan 18, 2016 7:11 pm Post subject: Re: Stumble and die hall sensor? |
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Maybe my first initial step is to do a full swap of the ignition switch since I have one instead of the quick switch on the fly method. Maybe I'll see something when I have it out.
_________________
Binger
1984 Westy
1986 7 Pass R.I.P. Donor van
2019 Jetta
2014 Passat
2019 Atlas
2006 Passat R.I.P.
1998 Jetta R.I.P.
1984 Vanagon R.I.P. |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50338
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| Posted: Mon Jan 18, 2016 7:25 pm Post subject: Re: Stumble and die hall sensor? |
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With the TSII sensor disconnected the ECU should not be reading the output of the O2 sensor, and thus there would not be a waiting period for the O2 sensor to come on line each time you bump the key. Maybe there is some other function in the ECU that also resets when you bump the key but I am not well enough versed in the Digifant ECU to know.
Lets look at this angle, you had a fuel pump go bad and replaced it. This could have easily have let a piece of the pump, hose, or foreign material make its way into the fuel pressure regulator and thus cause it to malfunction. Check your fuel pressure and also make sure the nipple on the FPR holds vacuum. |
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binger59
Samba Member
Joined: December 09, 2007
Posts: 236
Location: Oswego, NY
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| Posted: Tue Jan 19, 2016 1:20 pm Post subject: Re: Stumble and die hall sensor? |
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If a piece came free of the pump it would have gotten through the canister filter also since that was after the pump
_________________
Binger
1984 Westy
1986 7 Pass R.I.P. Donor van
2019 Jetta
2014 Passat
2019 Atlas
2006 Passat R.I.P.
1998 Jetta R.I.P.
1984 Vanagon R.I.P. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32596
Location: Reading Pennsylvania
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