Code P1646 v. Fuel Pump
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I would expect that there would be no difference between the 2000 and 2001. They would both monitor the current flow in the Coil Circuit to detect a open circuit.
#27
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But I still think you ALSO have a secondary fuel pump (not relay, not ECU) problem also that generates no codes.
Last edited by WhiteXKR; 10-30-2012 at 11:58 AM.
#28
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I have a similar problem. i have duel fuel pumps. I dont' know which is #1 and which is #2. I found a fuel pump relay in the trunk fusebox, but I don't know if that is for pump #1 or pump #2. does anyone know if there are separate relays for each pump? The relay i found is working correctly. I believe my problem is with fuel pump #2. I understand that one primes the system and takes over after 3000 rpm. My car doesnt have fuel in the rail. Last time it ran, it wouldn't accelerate over 3000 rpm. I bought a pump but i don't want to replace the wrong one. So im trying to determine which is pump #1 and pump #2. Does anyone know???
thanks,
Jaglady03
thanks,
Jaglady03
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