So a while back i noticed that my car didn't have a pcv valve (how i did not notice before, i don't know)so i went down to the local VatoZone and bought one. I installed it and the car stopped burning oil (awesome!!!) Then i started having some weird idle problems, but didn't think much of it until I swapped over to the manual transmission. So i checked for vacuum leaks and nothing. Then i disconnected the pcv valve and plugged up the holes and BAM, no more idle problems but now it burns tons of oil. Any experts on this?

Did you disconnect the battery to let the ECU reset? Also have you scanned for any codes?

2007 - Jeep Grand Cherokee 4x4 - stock work SUV
1995 Talon TSi - Sold
1996 Base 2.5" Exhaust headers back, CAI, searching for long block to build and drop in.- Sold
1996 RS Daily Driver - Blown motor
1997 RS NA Built motor - Sold

I have tried resetting the ecu and tried different ecu's. The codes i have come from running the auto ecu (i did try a manual ecu, same thing) with no tcu. And another since I installed the egr block off plates, the problem was present before taking the egr off. With the pvc connected, it acts as if there is a huge vacuum leak.

Is the valve still good? Stuck partially open? Spring doesn't work? Leak at any of the hoses for the PCV?

Captain Caveman

96 RS Turbo 11.414 @ 119.62 MSNS, Crower 2 NA cams, BW366, 10.5 comp, UDP, 60mm TB, W/A intercooler, 3.55 tranny 567.9whp 430tq
97 RS NA 13.188 @ 103.87 MSnS powered 12.5 comp, Crower 3's and 219.4whp with 175tq
98 RS DD 12.5 comp on stock ECU, LTH, Crower 2's, Koni, GC, Hypercoil, DG hats
99 OZ 5sp Stocker 15.856 @ 85.97
99 GS stocker auto 17.7@77mph!

wiki home page:http://www.2gnt.com/index.php?d=bullettdsm

The valve is brand new, i have tried one from a working car, same thing. No leaks on any of the hoses.