Why would an engine stall out when driving down the road?
My 92 olds cutlass supreme stalls out when I am driving down the road. I recently had the catalytic converter replaced along with the upstream oxygen sensor as well (since it was bad). I have also had the spark plugs and wires replaced, switched out the fuel filter & cleaned out the throttlebody too. I noticed while driving or sitting at idle, there was black smoke coming from the exhaust. I had trouble passing inspection this year, its the first time I have really had trouble passing inspection. I went to go to the grocery store just a little while ago & my service engine soon light came on & would not go above 35 miles an hour. Any help in appreciated. Thanks.
i might check to see how much fuel presure you have may be a bad fuel pump
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