i've been looking because i hate it when people ask a question without looking, but i can't seem to find what i am looking for. So, i bought an 850 wagon for 1900 heater core is busted i assume that's why the floor is wet and the left front axle is crackin bad. none of that is what i'm worried about i've seen posts by tech and i'm sure i could change those. what i'm worried about is the car is stalling out, sometimes while i'm driving usually just jerks a coulple of times(like it loses power). if i just push the gas lightly for a few then let off it will stall. i plan to go get it looked at but right now i can't really go so i figured i would ask and see if anyone might have a clue thanks in advance for any advice.
josh

 

Hi Josh,

Welcome to the forum, and thanks for looking.

Situations similar to yours have beenreported often, and in many instances the problem was due to faulty MAF sensor or poor connections to it. However, the car may need more than just theMAF sensor, and the firstthing we would try is to see if there's a trouble code stored in the ECU. This eliminates the need for unnecessary replacement of sensors/parts. Specify the vehicle year so we can guide you to the right place. Did the car come with full service records? If not, the car could have been neglected too. Also, if the timing belthas not been serviced within the last 70,000 miles or 5 years, I would do it ASAP, along with pulleys & hydraulic tensioner.

Wait to hear from other members as well.


JPN

 

thanks, sorry it's a 1994.. it's got no good records probably was neglected i think the timing belt probably needs to be changed. do you think that could cause the stalling?

 

oh i'll have to go get the codes pulled tomorrow i think. i was thinking about just buying an obd 2 sensor but i'll probably just go to the volvo place

 

Yours is OBDI you can read the codes click link.
http://www.troublecodes.net/Volvo/

 

oh man thanks alot saves me 90.00 to have em looked at...i really like this car so far minus the few little problems

 

If you post the codes once you pull them we can help you more.

 

only code it gave me was low battery voltage.... i think anyways. i waited for a while and nothing else blinked. ? i'm going to check again when it's a little warmer out. gotta wait till i can put my son down for a nap : /

 

No it wouldn't; once the engine starts the electrical energy is supplied by the alternator. Only under certain circumstances the battery comes in to compensate for large electrical loads but that is rather unusual (driving on a rainy day at night, in a congested traffic is one where you're using multiple high-load devices).

If the car can be driven, I would visit a local AutoZone and have them diagnose with their OBD-II scanner; it's free.

Stalling problem is usually caused by one or more of the following on 850s:

- Fuel pump or pump relay.
- Faulty MAF sensor.
- Faulty Camshaft Position Sensor.
- Vacuum leak.
- Dirty throttle body.
- Neglected tune-up.
- Other faulty electrical/electronic devices or poor connections.

Wait to hearwhat others have to say on this. BTW, did youerase the code?


JPN

 

no i don't know how to erase it. lol. autozone said they would only check 1996 and newer and advanced autoparts said 95 and newer. : ( the volvo place down the street said they'd pull them for 90.00 but i might as well go buy the obd II sensor for that price lol

 

I didn't think the 94's had ODB-II?

 

See attachments for code clearing procedure. Once you've cleared the code, see if the same code comes back. Also, 1-3-2 is either LOW or HIGH voltage. If the latter was the case, the voltage regulator in the alternator may be shot, in such case it may have done some damage to electrical/electronic systems. Connect a digital multimeter across the battery with the engine running at idle. Then depress on the gas pedal, increase the RPM to 2,000-3,000 RPM to see if the voltage stabilises at 13.X~14.X volts. If it keeps shooting past 14 some volts, the voltage regulator has retired.

JPN

[IMG]local://upfiles/6892/94AC460CE2A84B9993BF053872456A16.jpg[/IMG]

[IMG]local://upfiles/6892/C671D4FF122344A9A729863F032BDECC.jpg[/IMG]

 

There is a few of them out there that had OBDII.
I was shocked when I saw it as well.

To clear the codes after you have read all the codes hold the button down for 10 seconds then wait for the led to come back on when it does then hold it 10 seconds again then it should clear the codes.

Sometimes it takes more than once to get them cleared.

 

Hi Jim, certain '94 models do have OBD-II. My 850 was '94 Turbo T5 (Engine:B5234T) and it did have one. OBD-II officially did not come out until '96 but some cars came withit a bit earlier. Info2x said he did not have one in his '94, but I'm not sure if it was a turbo or NA. Those '94 & '95 that came with OBD-II have label on the pax-side strut tower that states "This car is certified for OBD-II blah blah".


JPN

 

so i pulled codes from socket six after clearing one and the story has changed....241 first then 314 then 324 then 214
i had actually read something about it possibly being the camshaft sensor now i'm thinking it very well must be, but what is egr malfunction?

 

man the guy i bought this from was shady i was going through the reciepts that he gave me and i knew i saw one for timing belt in there but upon closer inspection it's a different car......grr is there a way to check to see if i need to change it?

 

Slide the cover off and inspect the belt.
Usually when the EGR code comes up it is a clogged up EGR valve.

 

thanks, so do any of those new codes sound like what could be causing the stalling. i thought i read somewhere the camshaft sensor could do that....looks like i'm off to buy a haynes today. : )

 

I would say replace the cam shaft sensor. Yes it will cause the stalling.
I will bet the plug for the cam sensor is falling apart.

 

Thanks alot everyone for your help. i will post how everything is going once i make some progress. luckily i live right next to a volvo junk yard in atlanta and a place called voluparts with an 18000 square foot warehouse. couldn't have picked a better car to buy lol