TD New Guy
Join Date: Jun 2018
Thanked 0 Times in 0 Posts
89 TC Maserati rough idle.
To start things off, I'm not only knew to the forum, but I'm new to working on cars that arent carburated. I've never owned a computerized car before, because the only car I did own was converted to carburation.
So, when I fire the car up it idles well in the warm up state. When it drops down to normal idle, it becomes inconsistent. It is around 600-800 rpm and occasionally drops down to 5 for a second, almost like it misses for a second. If I two foot it and raise the rpms to 1500, its smooth but light sputtering and a little pooting from the exhaust.
So far, ive tried wires and plugs, as well as the fuel filter. Ive also set the BTC to factory spec, and (heres were lack of turbo knowledge comes in) when I plug the sensor back in, I cant read the timing anymore. Seems like I should still be able to. I've also changed the air filter and checked the throttle body to see if its dirty, but haven't replaced sensors on it. I tried to find a post on here I saw a few days ago, but can't.
I dont know how or if on a stock car I can adjust the A/F ratio or if thats even the problem. Love the car but need some help.
The car is a 1989 Chrysler TC maserati SOHC 2.2 turbo II.