20 Most Recent
1994 Volvo 850 - Page 6 Questions & Answers
Odometer stopped working
How many miles are on this vehicle? I ask because the odometers in these car stop working around the 140k to 170k mark. Did the button comeback? Is this the mileage on the digital or analog trip meter?The process to change the odometer gear is fairly straight forward and takes less than $20 and an hour. Let me know.
How to change oil in automatic transmission in Volvo 850?
In order to change the transmission oil in this vehicle without a vacuum you need to remove the upper transmission line that runs into the radiator. Then attach about 3ft of 1/2 ID plastic tube (from any hardware store) to that line and into a 5 gallon bucket or other container. Start the engine and shut it off as soon as you see bubbles (may need two people for this) Then you add fresh oil to replace the amount of old oil and do this method till it runs out clean. (Takes around 12 quarts to complete) Be sure to make sure you are not letting the transmission dry! Permanent damage may result from this.Running this dry comes to a matter of second! This is why I suggest using two people, one to watch and one to run the key. Another method I have used is the drain and fill method. The drain plug on the bottom of the transmission yields 4 quarts and if you drain that and then fill it with fresh, run the car a bit (maybe to work and back) then do it again. Eventually around the third or forth change the fluid should be clean. This method takes longer but it much safer for the transmission. These cars take Mercon III/ DextronLet me know if you have any questions.
Check engine light for volvo 850 wont go off wat
Hi, I recommend you access the OBD panel to extract the trouble codes. Then send us the trouble codes for further advice. On 850 models the DLC is located in the engine compartment in front of the module box, behind the passenger side headlamp.
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Open diagnostic socket cover and install selector cable into
socket No. 2 for fuel injection codes or socket No. 6 (except Motronic
systems) for ignition codes.
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Turn the ignition switch to the
ON
position.
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Enter control system 1 by pressing the button once. Hold the button for at least 1 second, but not more than 3.
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Watch the diode light and count the number of flashes in the 3
flash series indicating a fault code. The flash series are separated by 3
second intervals. Note fault codes.
1f there are no fault codes in the diagnostic unit, the diode will flash 1-1-1 and the fuel system is operating correctly.
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If diode light does not flash when button is pressed, or no code
is flashed there is a problem with the soft-diagnostic system, proceed
as follows:
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Check ground connections on the intake manifold, and the ground connection for the Lambda-sond at the right front mudguard.
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Check the fuses for the pump relay and the primary pump. On 240
models, fuses are located inside the engine compartment on the left side
wheel well housing. On 760/780 models, fuses are located in the center
console, just below the radio. On 740/940 models, fuses are located
behind the ashtray. Access can be gained by removing the ashtray, and
pressing upward on the tab marked electrical fuses press. On 850 models,
the fuses are located on the left side of the engine compartment behind
the strut mount plate. The fuses on 960 models are located on the far
left side of the dashboard. The driver's door must be open to gain
access to the fuses.
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Remove glove compartment, and check control unit ground connections.
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Turn the ignition switch to the
OFF
position. Remove control unit connector and connector protective sleeve.
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Check diagnostic socket by connecting a voltmeter between ground
and No. 4 connection on the control unit connector. Reading should be 12
volts. If no voltage is present, check lead between control unit
connector and fuse No. 1 in the fuse/relay box.
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Turn the ignition to the
ON
position, and install selector cable into the No. 2
socket on the diagnostic socket. Connect a voltmeter between ground and
No. 12 connection on the control unit connector. Reading should be 12
volts. Press the button on diagnostic socket and note reading. Reading
on the voltmeter should be 0 volts. If no voltage at the control unit is
present, take reading at the diagnostic socket connector. If reading
remains at 12 volts when button is pressed, check diagnostic socket.
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Connect a voltmeter between ground and the red/black lead on the diagnostic socket connector. Reading should be 12 volts.
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Connect a suitable ohmmeter between ground and the brown/black
lead in the diagnostic socket connector. Reading should be 0 ohms.
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Turn the ignition to the
OFF
position. Connect ohmmeter between diagnostic socket
selector cable and the pin under selector button. The ohmmeter should
read infinity. Press the button and note the reading. The reading should
be 0 ohms.
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Connect a suitable diode/multimeter tester, or equivalent, between
the diagnostic socket diode light and the selector cable. Connect red
test pin from the tester to pin under diode light and black test pin
from tester to selector cable. A reading on the tester indicates correct
diode light function. With no reading on tester, replace diagnostic
socket.
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Check the system relay/primary relay by connecting a voltmeter
between ground and the No. 9 connection on the control unit connector,
then connect a jumper wire between ground and No. 21 connection on the
control unit connector. The relay should activate and the reading should
be 12 volts.
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Press the diagnostic socket button. Note any additional fault codes.
The diagnostic system memory is full when it contains 3 fault codes.
Until those codes are corrected and the memory erased, the system cannot
give information on any other problems.
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Press the diagnostic socket button for the third time to see if a
third fault code is stored in the memory. If the diode light flashes the
same code 1-1-1, there are no other codes in the memory.
Fig. Fig. 1: Push button once for mode 1
Push button twice for mode 2
Push button three times for mode 3
To clear the codes:
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Turn the ignition switch to the
ON
position.
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Read fault codes.
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Press diagnostic socket button 1 time and hold for approximately 5
seconds. Release button. After 3 seconds the diode light should light
up. While the light is still lit, press the button again and hold for
approximately 5 seconds. After releasing the button, the diode light
should go off.
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To ensure that the memory is erased, press the button 1 time, for 1
second but not more than 3 seconds. The diode light should flash code
1-1-1.
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Start and run engine. If engine will not start, correct the problem before proceeding and start over with Step 1.
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Check to see if new fault codes have been stored in the memory by
pressing the diagnostic socket button 1 time, for 1 second but not more
than 3 seconds.
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If fault code 1-1-1 flashes, it indicates that there are no additional fault codes stored in its memory.
The brake pedal goes all the way to the floor and
Have you checked the brake fluid level? It may be empty. There may be air in the brake lines. You may have a bad slave cylinder, caliper or master cylinder. Don't really know what kind of "module" would cause the pedal to go to the floor. Sounds like someone making stuff up.
Looking for the valve cover gasket for a 1994
There is no valve cover gasket for that engine. The cover for the cams is sealed by a special sealant that is applied to the cover and then it is torqued on. You could get into a world of trouble if you try this with out the special tools. Also, it is necessary to remove the timing belt to do this properly.
Volvo 850gls 1994 starts and
Hello and welcome to FixYa!
Looks like that the ignition coil is faulty. When the ignition coil is faulty the car tends to stall when engine is warmed up. I strongly suggest that you replace the ignition coil to resolve the problem. Not a big deal, it's common on all vehicle.
Hope this helps and thank you for using FixYa! Have a good one!
Volvo 850 smoke coming from exhaust manifold
Not to worry. Run the engine up to operating temp before jumping to conclusions and let the heat burn off any excess oil. A leaf will not do any damage.Do not let the engine overheat while idling and if the oil light comes on switch off immediately.
The smoke from the exhaust is oil deposited by oily assembly hands just burning off. It should dissipate after about 15 minutes at most.(or 5 miles' drive)
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