Okay so the first problem is my idle. My car was once an automatic and is now a manual. It was idling a little higher than what it was supposed to to I went to adjust the idle screw on the top of the intake and now it wont even run. I had another throttlebody and decided that since I couldn't get it idling how it was before I would just switch it out since it was still set up at stock off of another s5 engine with a manual transmission. Now when I replaced the throttlebody the car wouldn't even start right. Half the time it would flood and the other half of the time it would go up to 3k and then when it started to go down to 1500 it would drop down lower and just stall. My first question is how can I get the idle back to normal. I have tried putting the idle screw on the top back to the same position but neiter throttlebody with work even when adjusting the top scrrew. My second question is when I changed out the throttlebody and the engine started up the tach would work for a min and then die. I have checked all the connections including the connection for the switches on the throttlebody and also the gauge cluster and all connections are working correctly. I do not have someone to hold the idle of the car high enough for it to keep running to check the connections to make sure they are getting power. What could cause my tach to die? I really dont mind not having a tach but I really do not like the check engine light on the dash glowing at me because if something does go wrong I will not know. Thank you for the quick responces everyone. I will not be able to work on the car until monday but once I hear all of your suggestions and work on the car I will let you know.

 

I also have an alternator problem where even though the belt is tensioned correctly the belt keeps getting chewed up with two different alternators. I have had both of my alternators tested and they are both putting out enough current to pass testing but for some reason the car is cranking slowly like the battery is dying. do you think this has something to do with my other problems???

 

Aren't different ECU's used for auto trannies? or is it just the Cali models? doublecheck all electrical connectors and try deflooding to start? just some thoughts buit probably all off-base....

 

Both ecus are for manual s5 engines. I have already checked all electrical connections and it isn't flooded because I can keep it running if the rpm is about 1500. Any other suggestions.

 

No one else has any ideas. I really need help

 

You need to post this is the 2nd gen tech section, not the non-technical section.

 

I heard thru the grape vine to never adjust your idle screw unless you plan on messing with the tps... Just what I heard from a friend.

 

Sorry I reposted in the correct section. Can a mod delete this?