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atmvanman
Samba Member
Joined: April 04, 2016
Posts: 22
Location: bellinham
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 Posted: Thu Aug 25, 2016 4:17 pm Post subject: Van turns over strong and roars-then quickly dies. |
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| It sounds like it is going to start, but doesn't. the van hasn't run right in over a year. During winter break last year I replaced the fuel, and air filter and a good portion of the exhaust. Then right before spring break I changed the passenger side head-which turned into a fiasco. First the new water jacket seal just disintegrated as we were driving out of town. Then on the reinstall, a stud snapped. Fast forward to the end of June (summer) and I finally get the broken stud out and everything put back together. The van starts great five straight times. Idles for 5+ minutes on two occasions. the I go to do a test drive and it dies and won't restart. I replaced five hoses and have cleaned electrical connections. Now it sounds for all the world like it is going to start when you turn it over-but won't. Roars-then dies in a second. I'm slowly going insane. |
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Terry Kay
Banned
Joined: June 22, 2003
Posts: 13331
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| Posted: Thu Aug 25, 2016 4:47 pm Post subject: Re: Van turns over strong and roars-then quickly dies. |
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When was the last time the fuel filters were changed?
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T.K. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32598
Location: Reading Pennsylvania
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atmvanman
Samba Member
Joined: April 04, 2016
Posts: 22
Location: bellinham
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| Posted: Thu Aug 25, 2016 7:16 pm Post subject: Re: Van turns over strong and roars-then quickly dies. |
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| I changed the filter by the pump in Dec. and the van has only a couple hundred miles since then. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32598
Location: Reading Pennsylvania
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atmvanman
Samba Member
Joined: April 04, 2016
Posts: 22
Location: bellinham
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| Posted: Sun Sep 04, 2016 1:09 pm Post subject: Re: Van turns over strong and roars-then quickly dies. |
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PostPosted: Thu Aug 25, 2016 4:49 pm Post subject: Re: Van turns over strong and roars-then quickly dies.
Cause and effect.
It ran good?
After I put the head on, yes it ran better than it has run in a long time. Sounded strong, idled well.
you disassembled it to put on a new head...... Why? What was wrong with the head? Got a compression check, came back head cracked (it was) so I replaced it. Was going to eventually do both sides when I get the $$.
Why only one head? Standard procedure is two.
Was going to eventually do both sides when I get the $$.
You assembled it.
Yep. And it ran great. Started 5-6 straight time. ran for well over 1/2 hour. then went to take it for a test drive and it died. Replaced some questionable vacuum hoses, checked the spark, checked the air filter, all good.
What did you not put back correctly?
Nothing that me or four of my friends can find. One is a mechanic who actually teaches at the university and two of the others are van owners. They are stumped. We've gone over the engine multiple times-thus the hose changes.
Double check your work.
Done and done and done and done. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32598
Location: Reading Pennsylvania
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atmvanman
Samba Member
Joined: April 04, 2016
Posts: 22
Location: bellinham
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| Posted: Sun Sep 04, 2016 2:54 pm Post subject: Re: Van turns over strong and roars-then quickly dies. |
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Thanks. It's actually an 89.
"Make the diagnosis loom found in the FAQ section" Huh? |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32598
Location: Reading Pennsylvania
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atmvanman
Samba Member
Joined: April 04, 2016
Posts: 22
Location: bellinham
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| Posted: Fri Apr 07, 2017 6:12 pm Post subject: Re: Van turns over strong and roars-then quickly dies. |
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| Finally was able to work on the van again. Tried out the harness-no start. If I hold the key in the start position, it runs very ruff, but runs nevertheless. Still confused. |
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bluebus86
Banned
Joined: September 02, 2010
Posts: 11075
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Chainsaw
Samba Member
Joined: August 07, 2015
Posts: 249
Location: Issaquah Washington
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| Posted: Sat Apr 08, 2017 7:53 am Post subject: Re: Van turns over strong and roars-then quickly dies. |
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This sounds like a mass air flow issue. Is the air box attached to the throttle body well? No air leaks? Is tge box closed properly? The wires attached good?
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89 Westy. 2wd. Manual. |
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jimf909 
Samba Member
Joined: April 03, 2014
Posts: 7466
Location: WA/ID
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| Posted: Sat Apr 08, 2017 10:45 am Post subject: Re: Van turns over strong and roars-then quickly dies. |
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MAF is a good candidate to look at. I had the same symptom on a Volvo and the MAF sensor was the culprit.
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- Jim
| Abscate wrote: |
Do not get killed, do not kill others.
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Current: 1990 Westy Camper - Bostig RG4, 2wd, manual trans w/Peloquin, NAHT high-top, 280 ah LFP battery, 160 watts solar, Flash Silver, seam rust, bondo, etc., etc.
Past: 1985 Westy Camper - 1.9 wbx, 2wd, manual trans, Merian Brown, (sold after 17 years to Northwesty who converted it to a Syncro). |
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Howesight
Samba Member
Joined: July 02, 2008
Posts: 3274
Location: Vancouver, B.C.
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| Posted: Sat Apr 08, 2017 7:29 pm Post subject: Re: Van turns over strong and roars-then quickly dies. |
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| atmvanman wrote: |
| Finally was able to work on the van again. Tried out the harness-no start. If I hold the key in the start position, it runs very ruff, but runs nevertheless. Still confused. |
Those symptoms suggest that your ignition switch may need to be replaced. They do fail.
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'86 Syncro Westy SVX |
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16CVs
Samba Member
Joined: February 22, 2004
Posts: 4024
Location: Redwood City, California
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| Posted: Sat Apr 08, 2017 10:36 pm Post subject: Re: Van turns over strong and roars-then quickly dies. |
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Take a jumper, jump from the hot lead on the Alternator to the hot side of the coil.
Start the van with the key, If the van stays running then you have a bad ignition switch. Or you can start it up and then hold the key in the On position , not the start position and it should stay running as well.
If that does not do it then we need more intel.
Stacy
_________________
1987 Syncro Westfalia Triple knob (bastard)
1989 Syncro Tristar Triple knob "Swedish"
2013 Jetta Hybrid a true "Zwitter"
Samba member # 14980
Call anytime number 650 722 4914 .
Keep Your van running and upkept tastefully for the love of the hobby.
Don't let your van end up in an "abortions" thread. |
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atmvanman
Samba Member
Joined: April 04, 2016
Posts: 22
Location: bellinham
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| Posted: Wed Apr 12, 2017 6:16 pm Post subject: Re: Van turns over strong and roars-then quickly dies. |
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| This harness, https://www.thesamba.com/vw/forum/viewtopic.php?t=349429 already checks the ignition. Gonna check MAF sensor. Disconnecting it led to the van starting on a camping trip right before all this started happening. Totally forgot about it. |
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atmvanman
Samba Member
Joined: April 04, 2016
Posts: 22
Location: bellinham
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| Posted: Fri Jun 30, 2017 12:27 pm Post subject: Re: Van turns over strong and roars-then quickly dies. |
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| I have determined that the problem is the air flow meter. Where is the best place to buy one? |
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MattFromCascadia
Samba Member
Joined: June 14, 2015
Posts: 14
Location: Seattle
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