Cadillac Repair: missing, backfiring, fuel pressure regulator, cadillac eldorado


Question
I have a 1990 cadillac eldorado that misses real bad and backfires especially when i hit the gas. I've replaced the fuel pump, fuel filter, both oxygen senors, map sensor, coolant temp sensor, spark plugs, distrubutor cap, ignition, module, fuel pressure regulator and still haven't fixed my problem. I'm getting an error code of E052. Do you have any ideas what the problem could be.

Answer
E052 means that you have disconnected the battery at some time in the past.

Are you getting a CHECK ENGINE light as you drive the vehicle ?.

1. ignition ON. Engine OFF.

2. Simultaneously push and hold the OFF and WARMER buttons for 3 seconds and release them.

3. What code letters and numbers are you getting /.