check the fuel pump driver moduel located behind the spare tire
This could possibly be a fuel problem. Has the fuel filter been changed ? Fuel pressure checked ? Is there dirt in the fuel tank ?
The mk2 fuel filter is part of the fuel pump and it does not need to be checked/changed
Each air conditioner take a different size of filter. The air filter should be checked routinely and changed as needed.
First thing to do is change the fuel filter and if it still acts up get the fuel pump pressure checked.
Have transmission fluid and filter changed. Checked Transmission mounts
Have you checked to see if the spark plugs are firing?
You need to have the fuel pressure tested. The pump may seem to be working but not the required pressure needed.
The first question to ask is are you getting suction from the pool, When the sand filter is cleaned the pressure goes down. So the only thing you should worry about is. 1 The filter should be set on filter. you should be getting strong suction from the suction side outlet of the pool. and you should make sure you are not sucking air into the skimmer.
Based on the information, I assume it is the fuel filter you changed, that you have good spark and have done a fuel pressure check. I doubt that ALL the injectors would be clogged. I would think the fuel pump is faulty.
When the pressure shows 0 it means that the water is circulating as well as it can the pressure goes up as the filter gets dirtier and water is held back by the filter. If your pressure has suddenly dropped Far lower then usual it indicates that there is a problem in the filter. water is getting through somehow without being filtered. if you have a cartridge filter there may be same damage to it reducing back pressure.
Could use a lot more info like year and model. Have you changed the fuel filter? Have you done a fuel pressure test? Could be a faulty fuel pressure regulator. Have you checked the fuses for the injectors and ecm? Have you checked the fuel pump relay?
Check your fuel pump and fuel injectors. Have a fuel pressure and flow test done.