Having a failure while driving past the same spot leads me to believe your experiencing electromagnetic interference (EMI) also called radio-frequency interference (RFI) when in the radio frequency spectrum.
Find more info here:
Electromagnetic interference
EMI or RFI interference typically emanates from intended transmissions, such as radio and TV stations or mobile phones. Automobile ignition systems also generate changing electrical currents and voltages that can cause EMI..
Broadband EMI or RFI interference is unintentional radiation from sources such as electrical power transmission lines.
With that said, your ignition module may be adversely affected by an outside source. Ask you mechanic if he can
shield your module to see if that solves your problem.
The ignition module is located in the front seating area, passenger side, under dash, mounted above kick panel.
PS: What happens if you drive in a different direction for 10 minutes...does the failure still happen?
SOURCE: My Volvo 960 stalls while driving
It could be a number of things. Fuel Flow problem, or electrical apparatus heats up and works inefficiently. You could start from the cheaper, less strainous solutions, in this order: Change Fuel Filter, and clean Nozzles. Fuel Pump, Air Mass Meter.
SOURCE: 1994 volvo 850 stalls
If you have not already replaced the idle control valve then remove it and soak it in brake cleaner for about 30 minutes to remove any oil residue which may prevent it from operating correctly.Before you refit it dry it fully with a clean lint free cloth.
SOURCE: air conditioning works when car first starts up
It sounds like your cooling fans are not working.Need to check the cooling fan fuses,and the cooling fan relays.There is also a high side switch mounted somewhere on the high side of the ac system that cuts the fans on,or kicks them up on high speed when the ac system gets to high on the high side of the system.This switch may also cut the compressor off.I would check the fuses and relays for these fans first,this is more likely the problem.Is the car running normal temperature? If not the fans may not be running at all.Have them checked.The fan or fans may be bad them selfs.If I can be any more help,let me know.>>[email protected]
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SOURCE: My 98 volvo S70 occasionally will hesitate when I
Have the car checked to see if it has a speed sensor it could be giving you a bad reading.
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