Volvo FI help request

[Teller.John at orbital.com]

My 91 Ranger did the same thing after a !@#$-head grease monkey managed to
fill the MAF sensor (Hot wire type) with oil while filling the crank case
(you have to see a 3.0L engine up close to understand how this can happen).
This caused the EEC to run the engine extremely rich, which produced loads
of black smoke...  Just a shot in the dark, as I don't know what sort of
system Volvo installs.

--- John





"Ron Gregory" <rgregory at syty.org> on 01/18/99 01:05:11 PM

Please respond to diy_efi at efi332.eng.ohio-state.edu
                                                              
                                                              
                                                              
 To:      diy_efi at esl.eng.ohio-state.edu                      
                                                              
 cc:      (bcc: John Teller/ORBVA)                            
                                                              
                                                              
                                                              
 Subject: Volvo FI help request                               
                                                              








I have a buddy with a FI Volvo (either '84 or '85), that is
acting up.  It will start fine, but about 30 seconds later,
it will start to pump black smoke everywhere...big-time rich.
He pulled plugs and they are wet and black...

He's replaced about everything I can think of...
air sensor, IAC(or whatever Volvo calls it),
fp regulator, temp sensor, O2 sensor,  etc.
He wasn't too sure how to test any of those
sensors, so he's just been using the
"I'll swap it to see if it gets better" method
of auto repair

He hasn't touched the ECM, injectors,
ignition module, or distributor.

Is there any sort of data stream coming out of the
ECM that we may be able to watch to get clues?
Will that ECM blink codes (a la Delco ECMs)?

Please respond directly.  I'm a digest subscriber, and I'm
sure most of the rest of the list couldn't care less...

Thanks,
~ ~ ~ ~ ~ ~ ~
Ron Gregory
rgregory at iname.com