Okay guys so iv searched and searched but cant find anything that helps!
The car is a 1990 325is 2.5 m20 auto i just got finished doing the head gasket on it. sent the head to the machine shop cleaned everything up and put it all together with new head bolts,water pump, timing belt kit, spark plugs, and all new gaskets along with all the other misc hoses and stuff you replaced when you do a job like this. the car runs and drives great above 1000k RPM feels like theres so much more power now the only problem im having is the idle. it does have a ebay chip along with m50 injectors these are the only 2 mods done to the car the tach seems to read right on idle but the motor idles as if it has a irregular heart beat ( best way i can describe it) and it also shakes quite a bit when it has that hiccup.
iv replaced the coolant temp sensor, cleaned the TB , cleaned and checked the ICV came back with good ohm numbers 20-40-20, cleaned and checked the AFM also had good ohm numbers. checked for vacuum leaks ( carb cleaner way) and found absolutely nothing. checked all the vacuum lines all of which are ok. there is no fuel coming out of the fuel pressure regulator vacuum hose so i assume thats ok.i rewired the c191 connector with bullet connectors ( mine was corroded) new air filter,new fuel filter, im truly stumped i dont know what else to do ? what could it be!
Any advise will be taken and thanks in advanced. i am new to the forum and already cant get off of it everyday. (so many things you can do to these e30's)
The car is a 1990 325is 2.5 m20 auto i just got finished doing the head gasket on it. sent the head to the machine shop cleaned everything up and put it all together with new head bolts,water pump, timing belt kit, spark plugs, and all new gaskets along with all the other misc hoses and stuff you replaced when you do a job like this. the car runs and drives great above 1000k RPM feels like theres so much more power now the only problem im having is the idle. it does have a ebay chip along with m50 injectors these are the only 2 mods done to the car the tach seems to read right on idle but the motor idles as if it has a irregular heart beat ( best way i can describe it) and it also shakes quite a bit when it has that hiccup.
iv replaced the coolant temp sensor, cleaned the TB , cleaned and checked the ICV came back with good ohm numbers 20-40-20, cleaned and checked the AFM also had good ohm numbers. checked for vacuum leaks ( carb cleaner way) and found absolutely nothing. checked all the vacuum lines all of which are ok. there is no fuel coming out of the fuel pressure regulator vacuum hose so i assume thats ok.i rewired the c191 connector with bullet connectors ( mine was corroded) new air filter,new fuel filter, im truly stumped i dont know what else to do ? what could it be!
Any advise will be taken and thanks in advanced. i am new to the forum and already cant get off of it everyday. (so many things you can do to these e30's)
Comment