[b]1997 crank case vacuum / won't stay running[/b]
Ok i'm a newbie here, Let start at the beginning, I had to replace the UIM due to coolant loss. I caught it BEFORE the engine hydrolocked!! which was a good thing, that was a year ago. After replacing the UIM DTC p0171 was set, and remains until this day.Then a couple months ago we had a cold snap and the temps outside was below zero. The car sat over the weekend and when I started it to go to work I hear a CRACKING noise coming from the front of the engine. I popped the hood and removed that stupid plastic cover from the top of the engine to see where the cracking noise was coming from. (the cracking noise sounded like plastic breaking) when I removed the oil filler cap and extenstion tube it made a sucking noise and the idle changed and the cracking noise stopped and never came back. Now since then if I were to remove the oil filler cap there is a STRONG vacuum. I was driving the car into work and it just died, I had it towed to my house and it will start idle and die, the more pedal (gas) I give it the more it boggs down then backfires carries on then dies. I'm about to pull my hair out.. please help.
Here is what I have replaced so far....
UIM and gaskets,
Head gaskets (what the heck I had everything else apart)
MAF,MAP, TPS, IAC, Temp sensors
Oil sending unit
Fuel pump and filter
Just did a complete tune up on it last week.
HELP HELP HELP.. need this car to get to work. have a loaner right now but got to give it back soon