The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Yellow Peril Tuning - D-Jet Rich Mix 140-160 1973

posted by  Chris Mullet on  Wed Sep 22 09:43 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 09:08 CST 2014
[RELATED]

George,

I know you're probably tired of hearing this, but you need to try swapping in a "known good" MAP sensor. Just because it doesn't leak when you suck on it doesn't mean it isn't shot.

Here's a scanned manual someone put on the internet. I think it covers both D AND L-jet. Hit the link for images number 12 & 13 for MAP info.

http://www.conservatory.com/vw/manuals_nyx/EFI-DL.html

Here's another document that talks stricktly about the MAP sensor. This is probably the best info I have ever seen on that part of the system:

http://members.rennlist.com/pbanders/manifold_pressure_sensor.htm

It seems as though all sources seem to say the same thing about testing the resistance:

"The coils can be tested by measuring the resistance between terminals #7 & # 15 (should be about 90 ohms)and between #8 & #10 (should be about 350 ohms)"

Sucking on the hose connection should result in some sort of change in resistance, but I don't know what. I believe the second link I gave you above has some sort of graph that relates vacuum change to resistance change.

I have one or two spare MAP sensors at home. I'll give them the "suck vs resistance" test in the next couple days and let you know what I observe.






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.