Stalling 88 300E
 

car runs and drives good....but stalls at diffrent times during the day...it dont matter if iam on freeway at a stop sign or driveing down a road ..it do it at any speed..but at diff. times...but it will die and start back up with no problem or delay and drive like nothing is wrong and maybe 10miles later there it goes again..before it dies its like its loseing gas or fire while iam on the gas pedal and when i take my feet off pedal it act like it want to run ide but it will stall..but it start right back up and run good for another 5 to 20 miles..its been doing it for about a month...Please Help..........Thanks

I dont know but i would check the fuel filter

This happened to the PO of my '86 300E. The shop replaced the fuel and OVP relays. On my Volvos, the Bosch relays tend to develop tiny cracks in the soldering on the PC board. Eventually the cracks open the circuit and the engine stalls. When the current stops flowing through the solder, the solder cools and the crack closes. The engine will then start and run until the solder heats up again. :(

You can replace the relays, $$$$, or open them up and resolder the PC boards, cheap fix. Bosch make relays for both Volvo and MBZ and they have this same problem. :bulb:

Any suggestions on how to open an OVP relay? Which end opens up, the one with the pins.

Haasman