9165pt0

hey guys you may have seen im having idle issues. just had a ? on code 34. bad egr valve or sensor? i applied vacuum to egr valve while at idle and nothin changed.

AdderMk2

if you apply vac to the EGR and the car doesnt stall out, your lines are likely caked with carbon. Remove the EGR and make sure it is not clogged. After that you would remove the EGR spacer fron behind the TB and clean it, followed by removing the intake manifold and doing the same.

9165pt0

ya it didnt stumble. i have the egr off right now and am cleaning it. which lines are you reffering to? also ill clean the spacer, and the intake looks like it has a lot of black gunk in it. but its a gt40 tubular, has always been a pain to clean. any ideas?

AdderMk2

Berrymans B12 Chemtool and some soak time...

9165pt0

ok thanks adder. pullin off intake right now. hey im confused as to the egr piping? i see 2 lil rubber hoses go from egr spacer into a black pipe. i popped the hose off and the pipe has coolant in it and i believe goes into the water pump.which pipes? thanks

AdderMk2

did I mention piping?

I dont think I did...

9165pt0

oh i must have read it in another thread. but ya i got some berrymans and cleaned the crap out of everything. hopefully ill have time to put everything back together this weekend and give a positive update. thanks

9165pt0

ok so i havent been able to work on mustang until now. i checked and cleaned everything.timing is at 12 degrees. no vac leaks, although i saw the vac guage go from 17in at idle and drop down to 12in for a little bit. really wierd. still idles so rough, like its gasping for air. i took it for a spin and at a stop light it will idle fine. wierd. if i give it 3/4 throttle runs perfect, if i floor it from about 2000rpm itll stumble and i hear popping noises. i came home, ran codes koeo 10, 34. koer 12 41 91. im frustrated beyond belief. plz help.

9165pt0

oh i forgot, once i cleaned egr valve and passage into intake, it does stumble if i apply vacuum to the valve at idle.