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



 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Re: help (getting desperate) 700 1985

posted by  someone claiming to be John F. Randstrom on  Sun Jun 24 06:21 CST 2001 [RELATED]

My manual shows the fuel injectors have a resistance of 2 ohms. You will not get a resistance to ground at the fuel injector connectors because there is none with the engine off. The green wire at the fuel injectors supplies 12 volts + through the injection relay via fuse #1. The grey wires at the injectors get grounded through the LH-Jetronic Control Unit. There should be 12 volts + at the green injector wire to ground while the engine is cranked, or for a second or two when the ignition is switched on.

If you have fuel spraying out of the injectors when cranking the engine then this is a normal situation as long as when you disconnect the injector wires they stop spraying. It sounds as if your injectors are very dirty if they are spraying like hoses. The leaking injector is no good. You should try to get all of them cleaned and replace the bad ones.

If you remove the injection relay and the engine keeps running there is definitely something wrong with the wiring. Pulling fuse #11 only disables the in-tank fuel pump, not the main pump which uses fuse #1.

Do you have a Volvo fuel injection service manual? It would take you step by step through the troubleshooting process. Let me know if I can be of any help.





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.