Hi every body

I got a diagnostic code 1-1-3 on slot 2 meaning "Fault in fuel injectors" and check engine is light on. Idle is running roughly. I check each injector with ohmmeter and I got 15,4 Ω which is supposed to be in the norm.

I would like to know what does it mean exactly and which part(s) to check .

Thanks for help.

 

Strictly speaking, code 113 is not "fuel injectors" but rather a problem with the injection system that may or may not include fuel injectors. An old/bad O2 sensor could set that code as well. The last time I got it, it turned out to be a bad connection where the O2 sensor plugs into the harness on the firewall. Although Volvo didn't specify a replacement mileage, most manufacturers want you to replace them at around 50K. I consider 02 sensors to be a maintenance item, like spark plugs, and never feel that I've wasted money replacing one, even if it doesn't alway cure the problem. It's one of the first things I do when I get a used car, mainly to establish a baseline, since I don't know how old the one in the car is when I get it. I also stick in new plugs, which, in your case would be one of the first things I would do with a rough running engine unless I had personally done so already within 10K or so. At the very least, it eliminates bad plugs as a possibility. So: my advice is to (A) check the connections of your 02 sensor (B) stick in some new plugs (C) go with a new 02 sensor, which is a good idea anyway.

Volvo 02 sensors are a little pricier than those on, say, a Honda. You can buy "universal sensors that are a little cheaper, but I've heard of people having less than satisfactory results with them, so rather than add another variable to the situation I like to go with the one that the book calls for, and which will be "plug and play" with no modifications required. FYR, check this link:

http://www.swedishbricks.net/700900F...nostic%20Codes

Good luck with it, and let us know how it goes..

 

Thanks Joseph/TX

I already checked what you said. Maintenance is up-to-date. I also check for O2 sensor with ohmmeter and it is okay. O2 sensor fault should give 232 or 212 with check engine light on.

Are you sure that your reference codes for 7xx/9xx are the same than for 2xx???

Thanks, regards.

 

static resistance (ie, measured by an ohm meter) is not a very good test of the functioning of a O2 sensor. rather, you need to be able to see the low voltage pulses that come out of it while the engine is running with an oscilloscope, see the waveform table halfway down http://www.aa1car.com/library/o2sensor.htm

 

Thanks for info Pierce.

I mistakook ohmmeter and voltmeter. I checked O2 sensor and voltage is good.
I changed TPS for a new one (FCP Groton) and now everything seem okay.
Need to test it on long distance to see if it is really resolved.

 

Now my 240 does not start!

 

Are both fuel pumps working. Have you replaced the fuel pump relay and the radio supression (FI) relay.

 

Fuel pumps work well but RSR I don't know first time I hear that.
None start problems arrive after checking O2 sensor for a second time and unplugging battery car won't start. Problem seems to be caused by unplugging-plugging battery fastly. (?)

 

My 240 is dead. When starting motor turns with rare fires (1-2 shots) but impossible to start it up.

Any ideas??

 

The RSR relay drives the FI nozzles. I don't know where it is on the 240 but on the 740 it is a black relay located on the radiator fill tank on the left side of the engine. It may be on the left side mounted near the water tank. They are known to go bad and will not allow the car to start. See if you can find a service manual or wiring diagram .

 

sadly, on a 240, relays are all OVER the place randomly. on my vadis (aka source of confusion), there's at least two relays labeled 'lamda', one is on the relay bar on the left side spring tower, the other is buried in the dash behind the radio or heater controls on the right side (without any clear indication of where it actually is), and neither is expressly labeled 'radio supression relay'... sigh.

 

Try looking on this site at the PDF files. It will be the main fuel injection LH relay http://www.davebarton.com/volvorelays.html The internet is your friend , just ask the question and you'll find an answer. Good luck

 

no radio suppression relays on 240's.

 

It would be called "main relay LH fuel injection" located on the driver side fender in the engine compartment. item 217 here http://www.davebarton.com/pdf/relay_93_240.pdf

 

silly question. are these B230F (Bosch) cars sequential port injection, or all injectors fire at once every time injection? same with he B230FT as used in 91/92ish 740/940T ?

 

Jagtoes

I'm not sure that RSR exists on 240 but there is one black box relay corresponding with number 1323592-1 in front of the coil on the left side of comp.

I checked with Volvo dealer and he said me this is for a fan relay only. No other functions!

 

I'm sorry but we must have a communication problem. Did you look at the PDF file and do you have the same relay that was pointed out? Also if you talked to a Volvo dealer did you ask if there was a relay in the engine compartment that controlled the fuel injectors. This is difficult for me to try to help you when you are not indicating that you have review the information and either found or did not find the part. My suggestion to you is to have the Volvo dealer pick up the car and pay them to fix it. Sorry but I think we are done here.

 

Jagtoes

PDF file that you referred to has been checked at the beginning of the problem. It seems that it exists discrepancy between 240-1993 and 240-1991 diagrams. RSR and / or number 1323592-1 relay is not at the same place. On my 240 the 1323592-1 relay is on the left side of comp. but fixed on the support of the coil between coil and distributor cap. According to Volvo dealer and bubba240 there is no RSR on 240.

Your suggestion that the Volvo dealer picks up my 240, sorry to say about that, is a joke. Distance between home and nearest Volvo dealer is about 350 km (220 miles)!!!

 

My son terminates his mecanic courses and he found the problem. Very very simple. He checked spark plugs and found that #3 & #4 were fuel flooded. Spark plugs were black and smelt fuel. He let them dry at home temperature (it is not funny at -15°C to work outside) and clean them and reinstalled them . Restarting 240 was a game boy.

He thought that when O2 sensor was unplug at running condition to test it ECM received message as mix is to lean and increased mix resulting in piston gas saturation. Next step I need to test it on long distance.

Presently my 1991 240 wagon 176 887 km (~110 000 miles) runs as a new Volvo!

Thanks all for yours suggestions.

 

The Bentley manual shows L.H. fuel system fuse on drivers fender between strut tower and battery. The L.H. control unit is behind the glove box, next to engine ecm. Check the simple stuff 1st.
Did you have the key on when you "unplugged" the battery.A voltage spike could have occurred,hence the fuse ?