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Member
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Join Date: Nov 2021
Location: San Diego
Posts: 55
Real Name: Dave
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Member
Join Date: Nov 2021
Location: San Diego
Posts: 55
Real Name: Dave
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P0300, P0301 and P0306 with relay cycling. Fuel pump fail possibility.
Help needed please. Last year I did a head job at 250,000 miles. Replaced almost all parts that should be renewed. The other day I started up the car and I heard a relay cycling back forth under the dash or hood. I started the car and it would barely run because it was missing so bad. Tripped a p0300, p0301 and a p0306. I now have a thumping sound come from the left rear when the power is turned on. I have never heard that before. The tank is 1/2 full. Could it be a fuel pump starting to stumble? It has very little power going up a hill. I also pulled the EFI and 20A EFI fuse and the thumping did not stop.
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