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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

All of a sudden... starts up, but wont idle. Heres what I've checked: 200 1990

posted by  matt82dl on  Sat Sep 27 09:42 CST 2008
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Mon Oct 13 10:46 CST 2014
[RELATED]

My '90 has been running a bit weird lately. Initially I was losing power just a bit while cruising at ~ 40 mph.

Today I pulled the car into the driveway to check some things, I just let it idle for 5 minutes while I listened to the in-tank pump via a length of hose stuck in the filler spout. The engine began running rougher and rougher almost stalling only to catch again. It did this for 1 minute or two and then it stalled. The engine will 'catch' whatn I try to start it back up only to stall a second later. It will run (rough) if I keep my foot on the gas.

I have:

*cleaned the throttle body and checked the tps switch. (clicks right when you move the throttle)
*Inspected the main air hose from the AMM to the throttle body (looks good)
*Disconnected and reconnected the AMM
*checked and cleaned fuel injection related fuses
*In tank pump sounds strong
*Main pump sounds strong.
*can't check discharge from the fuel pump relay, but I did hear fuel rushing back into the tank when the car was running and I was listening to the intank pump.
*removed and cleaned IAC valve, bench tested with 12V and it appears to work.

So basically I'm stuck where the car will start as normal, ramps up to 1000 rpm and then just dies.


Other Possibilites:

Fuel system relay (replaced 60k ago)
crank position sensor (might be 230k old)
coolant temp sensor (idles when cold but not when hot)???

Thanks in advance for all responses.
Matt

--
'90 245 224k, '93 945 184k






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.