well another prob,tried to pass on the highway and the car is like a plugwire fell off,can torque the car to 2 k and then it shakes and I got 19+ vacuum got the p0171 code earlier...it idles fine....what now?

 

Heres a list of things that cause this code.
My Moneys on Bad MAF... (NON AC Delco)



A code P0171 may mean that one or more of the following has happened:

• The MAF (Mass Air Flow) Sensor is dirty or faulty
  Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
• There could be a vacuum leak downstream of the MAF sensor
• Possible cracked vacuum or PCV line/connection
• Faulty or stuck open PCV valve
• Failed or faulty oxygen sensor (bank 1, sensor 1)
• Sticking/plugged or failed fuel injector
• Low fuel pressure (possible plugged/dirty fuel filter!)
• Exhaust leak between engine and first oxygen sensor

 

The MAF (Mass Air Flow) Sensor is dirty or faulty---just replaced and new reg filter
Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.There could be a vacuum leak downstream of the MAF sensor-19+ in vacuum
Possible cracked vacuum or PCV line/connection--
Faulty or stuck open PCV valve --cleaned pcv
Failed or faulty oxygen sensor (bank 1, sensor 1)-- new O2sensor
Sticking/plugged or failed fuel injector---possible 3 cans of cleaner-
Low fuel pressure (possible plugged/dirty fuel filter!)--fuel filter would not do 1 bank only
Exhaust leak between engine and first oxygen sensor-no exhaust leaks

 

Maf Replacement..
Was it an AC Delco?
If not..Maybe its the problem?

Have you tried unplugging the MAF and then drive it to see if it runs better?
If not...
I would try Spraying WD40 in and around the vacuum line PCV and see if the idle changes...
If the idle does change...Then It could be a vacuum leak
Maybe a bad PCV valve..

 

I will try unplugging it and see...pcv valve wasn't clogged,i have been spraying spots for leaks..

 

Unplugged it and same thing... Throttle position sensor? Crank position sensor?

 

the plugs look kinda ratty..it has autolites #606..think that can do it?

 

What is this
801802AF-8DE9-4B47-8699-5726A9C9E0FE.jpg

 

the hose going there had a plastic elbow that broke and car was running crappy with it after I just changed plugs.

 

there is a connection that connects to the side of the egr valve and goes to the back of the engine,i sprayed wd in there and the eng died...weird spot, I put silicone in there,hope that fixes it.