Author |
Message |
nevadagold72 Samba Member
Joined: October 09, 2007 Posts: 59 Location: Reno, NV
|
Posted: Thu Aug 14, 2008 1:12 pm Post subject: Lean or Rich? |
|
|
Gang,
I have an '85 1.9L westy and I am having problems with initial startup. The first startup after the vehicle has been sitting is great. The engine fires right up and idles. If, however, I try to start driving before about at least 5 minutes of warm up the engine dies and won't start again without pushing down on the gas pedal. My first thought is a problem with the fuel injection? I have also noticed the fuel pump buzzing loudly. A mechanic mentioned to me that the vehicle smelled like it was running rich? Can I adjust the mixture to address this problem? Too lean on startup?
Any thoughts would be appreciated!! _________________ 1985 Vanagon Westy |
|
Back to top |
|
|
Dogpilot Samba Member
Joined: October 03, 2005 Posts: 4205 Location: Flagstaff, AZ
|
Posted: Thu Aug 14, 2008 1:16 pm Post subject: |
|
|
I would start with the Temp II sensor, it controls warm up. I would also adjust your Throttle switch to see if it is working as it should. The fuel pump buzzing can also be a clogged filter or the pre-filter.
http://www.van-cafe.com/vanagon_parts.jsp?pa=p&p=2094893422&pct=500987008&ct=399605673 _________________ Geology with a Syncro rocks!
86 Syncro Westy AKA "The Bughunter"
98 Disco I
08 Range Rover SC
08 VW Rabbit S
1951 O-1G |
|
Back to top |
|
|
Randy in Maine Samba Member
Joined: August 03, 2003 Posts: 34890 Location: The Beach
|
Posted: Thu Aug 14, 2008 1:33 pm Post subject: |
|
|
And after you do that you may want to investigate rust in the gas tank or at least cut open the old fuel filter and see if there is rust in there. Fuel pumps should not be very noisey. |
|
Back to top |
|
|
rockandsnowjunkie Samba Member
Joined: August 14, 2008 Posts: 8 Location: Vancouver
|
Posted: Thu Aug 14, 2008 2:00 pm Post subject: |
|
|
Question for you. Will it generally take 15 or so minutes, semingly for the engine to un-flood, for it to fire again after conking out?
Also, does anyone think it could be the fuel pressure regulator, or air flow meter sketching out?
I have a similar problem but it generally doesn't act up once the van's been running hot, as in for an extended period. |
|
Back to top |
|
|
Christopher Schimke Samba Member
Joined: August 03, 2005 Posts: 5391 Location: PNW
|
Posted: Thu Aug 14, 2008 2:16 pm Post subject: |
|
|
Nevadagold, I had the identical symptoms with my 1.9. Temp. II fixed it right up. _________________ "Sometimes you have to build a box to think outside of." - Bruce (not Springsteen)
*Custom wheel hardware for Audi/VW, Porsche and Mercedes wheels - Urethane Suspension Bushings*
T3Technique.com or contact me at [email protected] |
|
Back to top |
|
|
tschroeder0 Samba Member
Joined: April 14, 2008 Posts: 2096 Location: Boulder CO
|
Posted: Thu Aug 14, 2008 2:49 pm Post subject: |
|
|
As Dogpilot said buzzing usually indicates clogged fuel filter, and then yes, junk in the tank, and while you're looking check you vapor collection tanks ( the plastic ones) under the wheel wells, reach your hand to the top of them and make sure that the rubber seal is not open/cracked.
I kept having the clogging problem and it took forever to figure out where the heck the crap was getting into my tank. Good luck. Todd |
|
Back to top |
|
|
nevadagold72 Samba Member
Joined: October 09, 2007 Posts: 59 Location: Reno, NV
|
Posted: Thu Aug 14, 2008 3:43 pm Post subject: |
|
|
All,
I have replaced the pre-filter and main fuel filter and the buzzing is still there. I will look into the temp 2 sensor. It does take a while for the van to "unfloood". I will look at the vapor collection tanks. I did not check the fuel filter when I replaced it for rust.
Air flow meters are no longer available. any ideas on where to get one?
CAN SOMEONE POST A PICTURE OF THE TEMP2 SENSOR IN THE ENGINE? _________________ 1985 Vanagon Westy |
|
Back to top |
|
|
Dogpilot Samba Member
Joined: October 03, 2005 Posts: 4205 Location: Flagstaff, AZ
|
Posted: Thu Aug 14, 2008 5:19 pm Post subject: |
|
|
Don't worry as much about the air flow meter as the fuel pressure regulator. It is more likely cause the engine to flood. I would do the Temp II first, see what happens, the fuel pressure regulator second and see what happens. These tests are specifically of the 2.1L but also apply to the 1.9L.
_________________ Geology with a Syncro rocks!
86 Syncro Westy AKA "The Bughunter"
98 Disco I
08 Range Rover SC
08 VW Rabbit S
1951 O-1G |
|
Back to top |
|
|
floggingmolly Samba Member
Joined: April 06, 2007 Posts: 1106 Location: San Diego, CA
|
Posted: Thu Aug 14, 2008 5:24 pm Post subject: |
|
|
How are your vacuum lines? I have been harping on this recently because I had a similar problem due to a vacuum leak. The vacuum lines are quick and cheap to replace. _________________ '85 Wolfsburg Weekender |
|
Back to top |
|
|
nevadagold72 Samba Member
Joined: October 09, 2007 Posts: 59 Location: Reno, NV
|
Posted: Fri Aug 15, 2008 9:03 am Post subject: Update |
|
|
All,
I replaced the temp 2 sensor last night and the van starts ok but runs VERY rough at about 500 or so RPMs for about 30 seconds and then smooths up and the rpms come up to about normal. Is there some adjustment that would need to be dialed in after the temp 2 sensor is "fixed"? _________________ 1985 Vanagon Westy |
|
Back to top |
|
|
nevadagold72 Samba Member
Joined: October 09, 2007 Posts: 59 Location: Reno, NV
|
Posted: Fri Aug 15, 2008 9:05 am Post subject: Update 2 |
|
|
Sorry I forgot to mention that my Mass Air Flow Meter is making a horrible crackling racket.... _________________ 1985 Vanagon Westy |
|
Back to top |
|
|
Dogpilot Samba Member
Joined: October 03, 2005 Posts: 4205 Location: Flagstaff, AZ
|
Posted: Fri Aug 15, 2008 9:35 am Post subject: |
|
|
Does the racket correspond to the rough running? I would take it off and check it for worn bearings. Then you can lubricate the two bearing points with some Tri-Flow or LPS 2 (not WD40). See if that makes it smoother. Then inspect the rubber boot for cracks. Check the Throttle switch to ensure it does work as it should. Testing for the 85 is a bit different than the 86 up. You may want to open the throttle screw on the throttle body just a half turn to see if it gets better. _________________ Geology with a Syncro rocks!
86 Syncro Westy AKA "The Bughunter"
98 Disco I
08 Range Rover SC
08 VW Rabbit S
1951 O-1G |
|
Back to top |
|
|
nevadagold72 Samba Member
Joined: October 09, 2007 Posts: 59 Location: Reno, NV
|
Posted: Fri Aug 15, 2008 9:58 am Post subject: MAF |
|
|
The MAF crackling noise seems to be going all the time even when the idle is good.....
PS As usual you guys are awesome! Thanks for the help. I'll keep you informed. _________________ 1985 Vanagon Westy |
|
Back to top |
|
|
|