Volvo RWD 900 Forum

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help with 960 RPM sensor, few other ? 900

Got a few questions here for more experienced 960 owners than I. I have had for the past 2 months my MIL on, with code 1-3-1, which is for the RPM sensor, or as the green book says, the Timing Pickup. Is this the sensor bolted onto the back of the passenger side cam, or is it on the crank?

Also, where is the amp for the stereo, my CR-814 is cooked and it is time to put in an aftermarket stereo.

As well, I do not see an oil cooler on my driver, but when I took the radiator out of my parts car, there was a volvo oil cooler bolted onto the bottom of the radiator. Any huge benefit to having this, and should I retrofit it to my driver that I use almost purely for highway driving.








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help with 960 RPM sensor, few other ? 900

The crank position sensor is located at the top of the bell housing where it meets the back of the engine block. The one in the back of the head at the camshaft is a cam position sensor.

I don't know where you radio fuse is without looking it up in the manual which is at work and I am not.

I would have to take a look at your oil cooler set up but it could be that the one at the base of the radiator is the early style one and that you have the later style one that is all mounted right where the filter spins onto the engine. It has been a while since I have messed with the ones that bolt up to the bottom of the radiator, if memory serves me right they were for only a couple of year models.

Mark








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help with 960 RPM sensor, few other ? 900

Thanks Mark,

Just a few followup questions on this,

I am assuming then that either the Crank Position sensor or the cam sensor can throw the code for missing/bad RPM sensor. If so I will just replace both to be done with it. How hard is it to get to the one on the bell housing?

Also I was under the impression that the CR-814 radio had only a line level output, with a separate amplifier, but certainly could be wrong on that (and I hope I am, be much easier to use the bulk of the old radio wiring).

I will check on the oil cooler tonight, good to know about early/late models having different styles, one less thing to worry about. Both my 960's are the same year, 1992, but my driver does have a 94 engine in it.,

Thanks

Tim








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help with 960 RPM sensor, few other ? 900

With two 960's in your driveway you should be the one answering questions not asking them, it must be an indication that your two run well.

The codes for rpm/cam position sensor are specific. If you were having problems with both you would be getting two different codes.

When you do get the rpm sensor/crank position code, does it the engine stall out? The rpm is required for the engine to run, the cam sensor can fail but will still run, poorily though but still run.

I am not aware that the standard radion in the 960 had an amplifier, my radio has a plug in the back for one, but none exists.

Good luck!

DanR '94 964 333,000 miles (99,000 on the new engine)
--
DanR








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help with 960 RPM sensor, few other ? 900

Dan,

Yeah I am getting to the point of being able to answer some questions on the 960s! I am more of a 240 guy, know a bunch about the b21 and b18's, but these b6304's have me a bit perplexed to say the least! but I sure do like the power and comfort of these cars. One runs pretty good, the other has a new head but a couple of banged up pistons, and I will be parting out (actually have an ad for parts in classads if anyone needs anything)

The car does run actually pretty smooth with the rpm sensor code thrown, a slight lump at idle maybe every 10 seconds or so, but have put about 6K miles on it since the MIL came on, still getting 23-25 mpg highway. It does not stall with the code on (it stays on constantly). I reset it a few times, and always comes back on immediately after startup. The car has 275K, but the engine is a 94 with about 100K on it, so a slight lump is no issues, still pulls real hard right up to the redline with no stumbling or stalling. I will double check the code in a minute here and post it. Maybe I am reading it wrong.








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help with 960 RPM sensor, few other ? 900

follow up - I pulled the code 1-3-1 out of the light just now. I see in the manual there is 1-3-1 and 2-1-4 being for the timing pick up signal. Am I right to assume that 1-3-1 is for the cam sensor, and 2-1-4 is for the crank sensor? Thanks








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help with 960 RPM sensor, few other ? 900

I just checked the FAQ and both codes involve the RPM sensor.

DanR
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DanR








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help with 960 RPM sensor, few other ? 900

I just checked the FAQ and both codes involve the RPM sensor.

DanR
--
DanR








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help with 960 RPM sensor, few other ? 900

Absolutely Naive to the 900's. But if it is a b230 engine then do a Search in the RWD section on Crank Sensor. many of us have written of our success and woes
--
'75 Jeep CJ5 345Hp ChevyPwrd, two motorcycles, '85 Pickup: The '89 Volvo is the newest vehicle I own. it wasn't Volvos safety , it was Longevity that sold me http://home.no.net/ebrox/Tony's%20cars.htm







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