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 

Quirky Starting Issue 850 1993

posted by  KlausC on  Sun May 8 08:42 CST 2011
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

Using a multimeter, you can check the resistance at the ECT sensor, the resistance will increase (numbers get smaller as the temp increases):

68F = 2800 Ohms
104F = 1200 Ohms
212F = 150 Ohms

So a cold engine should be around 2800 and a hot engine around 150.

Many on this board suggest swapping out the thermostat and the sensor at the same time, due to need to drain about a quart of antifreeze to do either. I disagree. When the ECT fails, it is easy enough to replace without a lot of spillage - just use a finger to plug the hole. The ECT and thermostat NEED to be OEM, do not get knockoffs.

Running on a 'cold' engine for long periods due to an open thermostat will increase the likelyhood that the plugs are fouled. The ECT reading low will cause the engine to run rich eventhough the cylinder themperature is hot. Replaceing the thermostat should solve your hard start problem.

Klaus
--
Always willing to listen, just not able to take direction.






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.