Okay so I'm a pretty decent mechanic and am normally good at diagnosing problems, but I've tired everything I can think of to fix my issue to no avail.
2002 ford focus zx3 2.0 zetec.
Almost 190,000 miles.
Parts repaired/replace recently.
Idle air control valve
Plugs and wires.
Fuel filter.
Thermostat.
Water pump.
Pcv valve.
Pcv hose.
Air box deleted, short ram air installed.
Battery.
Alternator.
Dpfe sensor.
I'm forgetting like maybe one or two but I cant think of them rn, slot of work and parts in a short period of time, some just preventative maintenance and some to try and solve the problem.
Basically the car has the typical idle problem, when I crank it, sometimes it starts the first time, sometimes it takes a sec and a little gas pedal pressing. Once it starts it's almost always the same thing it revs up almost to 3500-4000 rpm, holds for a second or two then gradually falls until it gets to around 1200 rpm holds for a minute or two, no misfires runs fine then suddenly drops under 1000 rpm and either stalls out and dies or just runs really bad.
When driving it hesitates when accelerated and then catches almost like a power band in a dirt bike and goes like nothing was ever wrong, at hwy speeds it runs like a stop, no shudders, misfires, anything but when I come to a stop it dies 95 percent of the time, the only it doesnt is if I put it into neutral (idles perfectly fine).
Other info idk if its related.
*when any accessory load is placed on the engine it runs bad, but once turned off goes back to normal.
*have checked all the wires and connections/connectors that I can test. No issues.
*timing belt is in time and fine
* getting PO171 and PO135 trouble codes
Any suggestions or ideas or even just point me in the right direction?
2002 ford focus zx3 2.0 zetec.
Almost 190,000 miles.
Parts repaired/replace recently.
Idle air control valve
Plugs and wires.
Fuel filter.
Thermostat.
Water pump.
Pcv valve.
Pcv hose.
Air box deleted, short ram air installed.
Battery.
Alternator.
Dpfe sensor.
I'm forgetting like maybe one or two but I cant think of them rn, slot of work and parts in a short period of time, some just preventative maintenance and some to try and solve the problem.
Basically the car has the typical idle problem, when I crank it, sometimes it starts the first time, sometimes it takes a sec and a little gas pedal pressing. Once it starts it's almost always the same thing it revs up almost to 3500-4000 rpm, holds for a second or two then gradually falls until it gets to around 1200 rpm holds for a minute or two, no misfires runs fine then suddenly drops under 1000 rpm and either stalls out and dies or just runs really bad.
When driving it hesitates when accelerated and then catches almost like a power band in a dirt bike and goes like nothing was ever wrong, at hwy speeds it runs like a stop, no shudders, misfires, anything but when I come to a stop it dies 95 percent of the time, the only it doesnt is if I put it into neutral (idles perfectly fine).
Other info idk if its related.
*when any accessory load is placed on the engine it runs bad, but once turned off goes back to normal.
*have checked all the wires and connections/connectors that I can test. No issues.
*timing belt is in time and fine
* getting PO171 and PO135 trouble codes
Any suggestions or ideas or even just point me in the right direction?
