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 

Error code for coolant temp sensor AFTER replacement 700

posted by  mrad on  Sat Jun 9 11:03 CST 2007
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Oct 19 05:54 CST 2008
[RELATED]

My '90 740 turbo was getting terrible fuel mileage and getting a 2-3-2 code from the on-board diagnostic box.

Along with cleaning the throttle body and idle control valve, replacing plugs, etc, I replaced the coolant temperature sensor (the one that sends engine temp info to the computer, not the dashboard gauge).

After replacing the sensor, the car was very hard to start, which I attributed to perhaps my knocking something loose. I fiddled around for a while, and then was able to get it to start. I drove it for an hour and it ran very well (though the service engine light came on, which was a new occurance).

The next morning, it was VERY hard to start, and I fooled around checking for spark and fuel, etc., all of which seemed fine.

Finally, it started and drove well, but alas, the service engine light came on again.

I checked the on-board codes, which now read 1-2-3: "No signal from coolant temperature sensor." (!?)

I've never had this code before (and starting has never been a problem).

What gives?

Did I get a bad sensor? I got this one from Auto Zone.

Should I buy another and try again?

Thanks for any advice.






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.