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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Diagnostic symptoms: hoses leaking vs fuel pressure problem 700 1995

posted by  Philip on  Sun Jun 19 01:34 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Thu Oct 23 10:21 CST 2014
[RELATED]

My daughter's 95 940 Turbo has a bad stumble/surge problem. It went away after 200 mile highway trip, but now over five days has become gradually worse again. Any kind of load and it starts bucking. I have to give extremely light pedal pressure to get up to speed.

I have:
replaced fuel filter
filled up tank with gas
put in big bottle of Techron
replaced fuel pump relay
re-soldered FI relay
swapped out FPR
Swapped out AMM
replaced small vacuum hoses that looked crumbly
inspected big turbo hoses
swapped coil

Before I build the tool to pressurize the turbo hoses as described in the FAQ or buy a fuel pressure tester, is there a way of determining if there is a air system leak vs low fuel pressure? That is, if there is a air pressure or vacuum leak will it be running rich, so that I could check the plugs for fouling, the exhaust pipe for soot, and the exhust for black smoke? If it shows these symptoms, should I build the tool to look for air sytem leaks? If not, then buy the fuel system tester?





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.