I have a 2002 MINI Cooper S I changed the supercharger oil and added the recharge kit from imperial MINI. I also installed a new mishimoto radiator and new fuel filter. Once I got everything back together and started the supercharger was whining the exhaust manifold was red hot and it wasn't even up to running temperature yet. It was surging at idle really bad I hit the gas to see if it mad a difference it surged worse. It shot me three codes


P1109- Manifold air pressure to high in deceleration



P1242- Secondary Upstream Manifold Air Pressure Sensor Too High in Deceleration


P1689- Electronic throttle control monitor level 2/3 torque calculation error

Any help is appreciated after all this I am tired sore and have no clue where to start searching. Also when I was putting the supercharger intake tube on the tab to screw it in on the block broke I don't know if it makes a difference or not.

 

You didn't leave any rags in any of the intake or discharge ports did you?

The broken bolt at the supercharger base for the intake tube need to be there or your're pretty much going to have a vaccum leak at some point.

 

Ok I'll order a new one is there a truck to putting that thing on cause it was a nightmare.

 

To check for intake leaks put a rubber hose on the end of a Burn-Z-Matic Propane canister and with the engine idling leak a little propane around the joints that you worked with. If the engine speeds up you found one of the leaks. Caution do this out in the open and have an extinguisher on hand. Little chance of a fire but better safe than sorry.

 

I could really see something going wrong there with me
Is there anyway to pump smoke into the engine? I know I found an exhaust leak by sea foaming my intake lol
do you know any tricks to attaching the supercharger intake tube? I am pretty sure that's where it is coming from my by pass valve seems to be working correctly

 

Just a quick update

I've had to dismantle the front end a couple of times now. I've noticed that if I always put the gasket "green one" OEM and use the NAPA sylaglide to put it on I've not had an issue with it going nuts first time I start it after working on it.

 

same symptoms happened to me after I changed my water pump and pulled my SC to make a mod. I accidentally broke the hard grey plastic tube that goes to the map sensor. Surged, idled erratically and high, super hot exhaust, SES light on. Found and replaced the plastic tube, instantly ran perfectly, and the SES light went off after about 20 restart cycles. Good luck.

YD

 

Yea I did the same and also replaced the green gasket in the intake tube problem solved