Jrp1978

iTrader: (10)

I took my pcv system off and went to a breather in the cap on my 402 and all hell broke loose ... now its hard to start when it does start the idle dips like hell .....its bucking a surging really bad now , and when i cluth it there is like the throttle drops *** like the ( not sure the term) air cracker is gone or what ever holds the idle a little high until the vehicle stops so know when i clutch the car it it drops to 500 rpm then up to 1200 for like 25 seconds before holding the idle!!!!!!!!!!!!!!!!!!!!!!!!! I have check for vaccum leaks cant find **** ? what did i do here .

99blancoSS

iTrader: (115)

SO when you took all the stuff off what did you do with the inlets to the tb and intake?

You need a retune for idle most likely. The engine was getting air at idle from the pvc and hose from the passenger cover to tb. Its not getting that now if you plugged those inlets...

Jrp1978

iTrader: (10)

i just plugged them off with rubber caps

99blancoSS

iTrader: (115)

THen most likely you need a retune on the idle. Its not getting the air it used to get at idle. If you have an adjuster screw on the TB then you can use it.

69LT1Bird

iTrader: (1)

make sure the caps are still on, I had one come off before. Especially if it ever back fired, it will pop off the rubber caps.

the_merv

iTrader: (88)

Exactly what I was thinking. I re-did how I had the PCV System on mine and it was doing the same thing. I had to open the Throttle Body more.