.jrmyrmx

car: 1990 240 hatch, sr20det, s15 t28, dual electric fan kit, fmic, stock injectors, stock air system, newish fuel pump, mishimoto rad.

my car has been running pretty well lately since the install of my kaaz super q 1.5way diff and my s15 turbo but lately there have been some problems. When i start the car my oil light stays on for like 30 seconds to a minute or 2, while the oil lights on the engine rattles and makes clicking noises from the crank case. i check my oil and coolant very frequently. sometimes the clicking will start when im driving and it can be heard above the electric fans and the engine. when i come up to stop lights the rpm meter bounces off the bottom in between 0 and 500rpms until i reach a complete stop and then i goes back to 900-1200rpms. if i am not careful to keep the rpms above 0 the car stalls. last time i went on the highway was to pick up my 1.5way diff, i had a welded on installed at the time. when i got home after 20min on the highway my coolant was boiling and my engine was making whistling noises.

any insight into my cars habits? i am by no means a mechanic, all the stuff ive installed is well installed but not a professional job.

thanks.