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I have a flasing arrow on dashboard and blinking between two of the bottons next to the shifter, the PNP was replaced 20K miles ago, noticed when the arrow started blinking the shifter was between the 3 and D, I left the house quick and did not noticed.
Thank You
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1996 964 147,500 Miles
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Success after two days the light show went off.
PS. keep the shifter on the correct position.
Thanks
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1996 964 147,500 Miles
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Thanks for letting us know.
DEWFPO
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1998 S90 068,300 and 1995 964 152,300
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I don't think you have a problem. If the shifter was indeed 'between' D & 3, the TCM got confused the same as if the PNP was out of alignment. You don't mention if your MIL is on. On our 98, the MIL went out after 3 days. If your MIL is not lit, your flashing lights should be out the next time you drive it.
DEWFPO
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1998 S90 068,300 and 1995 964 152,300
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Whats the MIL, is been almost two days, I guess I'll wait and see for a day or two and the try the adjusting of the PNP.
Thanks
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1996 964 147,500 Miles
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The MIL is the Malfunction Indicator Lamp on the dash.
A bad PNP did not set the MIL on our 95 w/OBDI, but did set the MIL on our 98 w/OBDII. Your 96 should be OBDII compliant.
DEWFPO
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1998 S90 067,100 and 1995 964 150,850
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It could be that the PNP needs to be re-adjusted. There is a special tool used for alignment, many mechanics just go with out. I have OBD1 diagnostics so reading the codes would be easy, for you though a scanner would be required. The scanner would be needed if it is anything else but the PNP switch. I would bring it back and have them make it right.
DanR 94 964 247,000 miles (13,000 on the new engine)
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DanR
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Hi, I have a 97, 960 that is doing the same thing. The Volvo dealer suggested replacing the wse switch, which I did, was ok for a week, now it is doing it all over again. Don't mind buying parts if they are broke, but just throwing parts at a car with 161000 miles on it is not practicle.
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I think that in both your case and the case of the person who started this thread, the first step would be to retrieve the error codes stored in the "On Board Diagnostic" units (OBD). This procedure is outlined in the FAQ and doesn't require ANY tools at all other than a pen or pencil to write with. For the transmission on the 960's, I think the relevant codes should be at position A-1. The ODB will distinguish between faults in the PNP switch & the transmission rpm sensor. Both of these can or do cause the flashing lights.
A very knowledgable dealer mechanic told me that if you're driving the car with the transmission mode lights flashing, you're damaging the transmission. My experience has been that the the OBD codes have clearly and correctly identified the faults in both of the aforementioned cases.
You retrieve all the codes & write them down, then clear the codes and retrieve them again when the lights start flashing again. You will have to drive the car, and it will have to warm up. By doing this checking and checking again, you make sure you're not fixing an old problem for which the fault code was never cleared. In the case of the PNP switch, it's not all that uncommon for people to always assume that it's the culprit for the flashing mode lights. If they see an error code which ID's the PNP switch, they're inclined to just replace it only to find out afterwards that the rpm sensor is bad and the PNP code dates back a couple of years but was not cleared when the PNP switch was fixed.
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"retrieve the error codes stored in the "On Board Diagnostic" units (OBD). This procedure is outlined in the FAQ and doesn't require ANY tools at all other than a pen or pencil to write with."
-'95 = OBD1 = no special scanner needed to read codes
'96+ = OBD2 = special scanner to read codes
Unfortunately, in 1996 along with the introduction of OBDII, Volvo eliminated the ability to check the codes without the scan tool.
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Lance '92 965 w/ 190K miles
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Well, my mistake; I didn't know about this. So much for customer service. I'm glad I don't have one that new.
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I think that in both your case and the case of the person who started this thread, the first step would be to retrieve the error codes stored in the "On Board Diagnostic" units (OBD). This procedure is outlined in the FAQ and doesn't require ANY tools at all other than a pen or pencil to write with. For the transmission on the 960's, I think the relevant codes should be at position A-1. The ODB will distinguish between faults in the PNP switch & the transmission rpm sensor. Both of these can or do cause the flashing lights.
A very knowledgable dealer mechanic told me that if you're driving the car with the transmission mode lights flashing, you're damaging the transmission. My experience has been that the the OBD codes have clearly and correctly identified the faults in both of the aforementioned cases.
You retrieve all the codes & write them down, then clear the codes and retrieve them again when the lights start flashing again. You will have to drive the car, and it will have to warm up. By doing this checking and checking again, you make sure you're not fixing an old problem for which the fault code was never cleared. In the case of the PNP switch, it's not all that uncommon for people to always assume that it's the culprit for the flashing mode lights. If they see an error code which ID's the PNP switch, they're inclined to just replace it only to find out afterwards that the rpm sensor is bad and the PNP code dates back a couple of years but was not cleared when the PNP switch was fixed.
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