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 

codes 231 221 on '89 740 volvo ..maybe coolant temperature sensor? 700

posted by  Neutrino105 on  Thu Jan 29 01:33 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Thu Aug 23 13:27 CST 2012
[RELATED]

I've had an ongoing problem with an '89 volvo 740 8 valve non turbo.
It starts and idles fine in cold weather but after it warms up.. intermittantly, it starts and bogs as if starved for fuel. I had some spare parts of another car. I tried replacing the ignition module, knock sensor,
AMM, and the ECU. I have checked the charging system for high ripple - is ok.
The o2 sensor is after market (1 year old) and there is a new Fuel pressure regulator. Plugs are new platinum (good colour) wires test good and no apparent problems with the distributor cap or rotor.

It appears more in warm weather. Also, when I reset the code in the computer it acts up badly , then begins to work fine. at the worst You can hold the accelerator to the floor and it will not exceed 3000 rpm ...back off and it idles fine.

Another problem ...I think is related is the fact it blips the throttle on deceleration at 1400 rpm Since the AMM and the temperature sensor are governing this... I am going to try a new temp sensor. I haven't been able to find much on what signal is sent top the EZK ignition computer or what it does with the signal. advance /retard likely






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.