I installed a cleaned up Cobra intake I got from super302 this weekend.
After resetting the ECU I started the car, checked for fuel/coolant/oil/vaccum leaks and reset the timing back to 14*. It idled noticably rougher - the engine moves side to side ever so slightly. I drove it around for about an hour today and the idle improved slightly but is still just a little rough.
In park (automatic) it idles around 1000rpm and in Drive it idles around 700. This is just a touch higher than where it was with the stock intake. Is this slightly rougher idle normal after swapping intakes? My mods are below.
I checked all the vaccum connections for leaks, pinched off all the vaccum hoses I could while the car was running. I also sprayed some starting fluid around the front of the intake (all I could get to) w/ no changes in RPM speed. The only hissing I can hear is coming from the little canister that sits by the EGR on the firewall that has vaccum coming into it from the bottom of the intake. Not sure if this is normal because I never listened to it. The PCV valve is also seated well into the grommet with the screen in place.
The rough idle is definately livable if this is the way it is but I'd like to know if I need to pull the intake and glue it down again.
This is my third intake to install. The only thing I didn't do on this intake that I did on the others was when I stuck the intake down I didn't use any guide studs and I used the rubber end pieces instead of a bead of RTV. I *did* put some blobs of RTV at each corner of the end gaskets but I didn't let it sit longer than a minute before I put the intake down. The end piece gaskets look seated just fine when looking at them with a mirror (back ones) or from the front.
On another note, the car caught second pretty well getting on the Interstate (never done that before)
Thanks!!!
After resetting the ECU I started the car, checked for fuel/coolant/oil/vaccum leaks and reset the timing back to 14*. It idled noticably rougher - the engine moves side to side ever so slightly. I drove it around for about an hour today and the idle improved slightly but is still just a little rough.
In park (automatic) it idles around 1000rpm and in Drive it idles around 700. This is just a touch higher than where it was with the stock intake. Is this slightly rougher idle normal after swapping intakes? My mods are below.
I checked all the vaccum connections for leaks, pinched off all the vaccum hoses I could while the car was running. I also sprayed some starting fluid around the front of the intake (all I could get to) w/ no changes in RPM speed. The only hissing I can hear is coming from the little canister that sits by the EGR on the firewall that has vaccum coming into it from the bottom of the intake. Not sure if this is normal because I never listened to it. The PCV valve is also seated well into the grommet with the screen in place.
The rough idle is definately livable if this is the way it is but I'd like to know if I need to pull the intake and glue it down again.
This is my third intake to install. The only thing I didn't do on this intake that I did on the others was when I stuck the intake down I didn't use any guide studs and I used the rubber end pieces instead of a bead of RTV. I *did* put some blobs of RTV at each corner of the end gaskets but I didn't let it sit longer than a minute before I put the intake down. The end piece gaskets look seated just fine when looking at them with a mirror (back ones) or from the front.
On another note, the car caught second pretty well getting on the Interstate (never done that before)
Thanks!!!