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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Hard to start cold, otherwise OK 700 1991

posted by  Big Harry on  Fri Mar 18 02:09 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Sep 21 11:06 CST 2014
[RELATED]

Hi Bob,

I'm not certain what causes the no start problem, I have experienced it on my 88 765T from time to time, and it has been completely re-wired. From all of the posts regarding this subject, it would seem to be restricted primarily to the Turbo application. My pet theory is that as these motors, (which already have a lower than the 9.8:1 compression of the N/A motor when new), age, the lower compression on a cold start, coupled with the small amount of residual oil on the cylinder walls, allows even the slightest hesitation on initial firing to foul the plugs.

I changed to a plug that is 3 ranges hotter than the factory specs, and noticed a much improved performance, (from Bosch Platnums to AC DELCO R45**). It also does not hang as badly on the firing of the second, third and fourth cylinder when it is cold.

Of course this is just a theory so you might want to change the Coolant Temp Sensor, Radio Suppression Relay, Fuel Pump, Distributor, and ECU. That seems to be the most common advice.

Hope you find it,

--
Will Dallas, www.willdallas.us, www.willdallas.org, 86 245 DL 205K miles, 93 940 250K miles, 88 765 GLE 149K miles, 87 745 , 86 244 DL 200K Miles






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.