Check engine light has been on for several days. Just had (yesterday) new plugs, cap, rotor and wires installed.

From Ozbrick:
1-1-3 Fuel injectors; From 1994 and later, Heated oxygen sensor - maximum enrichment sensed short term fuel mixture too weak

All I got was this one code and the check engine light was reset. Can anyone define what I have to do next, that is if the check enginee light comes on again and I get the same codes?

TIA,
makntraks

p.s. Also how do I reset the "Service engine" light? After my last few oil changes it has not been reset, something I had hope my local mechanic would have taken care of.
--
Noobie Volvo owner just wondering what took me so long!!!

The CEL came on because 113 could be a cause for the CAT to get too hot. Unless it happens again real soon, I wouldn't worry about it too much. Giving it a mini tune up should have cured the problem.
Volvospeed has most of the codes/reset service stuff. Look under maintenance.

Klaus
--
98 V70Rawd(101Kmi), 95 854T(85K mi), 75 164E(173K mi)

To Reset Service Light....

1993-95 VDO TYPE INSTRUMENT CLUSTER Enter 1-5-1

Switch on ignition. Select position 7 on Volvo data link
connector (DLC) A. Depress button four times, shortly but distinctly.
You have now entered test mode 4. When LED emits steady glow, the
system is read to accept code.
Enter first digit while LED is still lit (1). Wait until LED
glows steadily to enter second digit (5). Repeat procedure for third
digit (1).
Control module confirms operation by LED giving a couple of
rapid flashes. Zeroing is completed and SRI turns off.



What socket did you pull the 1-1-3 code from ? I don't really show it in the A2 socket codes.
Are you sure it was 1-1-3 and not 1-1-2 or 1-1-5 ?





Mike
'95 850T

I followed the instructions on Bay 13 and took them from A2. There was no reference to the 113 code in A2 on Bay 13 but I did copy/paste from Ozbrick what was listed there.

Thank for your help,
makntraks
--
Noobie Volvo owner just wondering what took me so long!!!

Oh Ok, I mistook it for a Turbo 850 sorry. The 1-1-3 code is for the N/A 850.
Check for a vacuum leak (bad vacuum hose...). Did you say you had already replaced the O2 sensors?

Mike


1-1-3 (HO2S Integrator At Maximum Enrichment Limit),

1) Code 1-1-3 or 2-2-1 means that engine is running lean.
This may be caused by an air leak or an HO2S sensor fault. Code 2-3-1
or 5-1-2 means that engine is running rich. This may be caused by high
fuel pressure, leaking injector(s), faulty MAF signal or faulty HO2S
sensor.

2) Connect measuring unit to fuel injection ECU. See
MEASURING UNIT under SELF-DIAGNOSTIC SYSTEM. To check HO2S sensor
signal, start engine. Connect voltmeter between measuring unit
terminals No. 22 and 23. Voltage should vary between .1-.9 volt after
about 30 seconds.

3) If voltmeter indicates a constant one or zero volts, HO2S
sensor is interpreting lean air/fuel ratio or is shorted to ground.
Disconnect HO2S sensor connector at firewall. Use a voltmeter and
backprobe between connector terminal No. 2 and ground. See Fig. 4.

4) If voltage remains constant at zero or one volt, check
engine CO adjustment. If voltage varies between .1-.9 volt and code is
still present, HO2S control is adjusting CO correctly but fuel
injection ECU is indicating fault. Check engine CO.

5) To check CO, connect CO meter to CO tap in exhaust pipe.
Start and run engine to operating temperature. Disconnect HO2S
connector. Display, record, then erase codes. Check CO.

6) If meter indicates low CO and engine operates very
unevenly, engine is running lean. See Codes 1-1-3 and 2-2-1. If meter
indicates high CO (greater than 2.5 percent), engine is running rich
and system must make mixture leaner to compensate for fuel leakage or
other fault. See Codes 2-3-1 and 5-1-2.

7) If CO content is .3-2.5 percent and engine runs normally,
reconnect HO2S sensor and recheck CO content. If reading becomes too
high or low, repeat test using new HO2S sensor. If CO content is still
incorrect, repeat test using new fuel injection ECU.

Holy crap!
Thanks for the explaination of the fault code. No, I have not changed anything other than the plugs, cap, rotor and wires on Wed this week. I have noticed that over the last couple of weeks that I "feel" something amiss when idling and that was my impetus for the low budget tune up.

I'm assuming that my local guy will / should understand what you wrote. Either way, I managed to reset the "check engine" light so maybe I'm in the clear for a while, is that a fair assumption?

Again, I appreciate all your help!
makntraks
--
Noobie Volvo owner just wondering what took me so long!!!