94 B18C GSR in 92 CX hatch. The car chuggs and shakes while trying to hold a constant speed or gently accelerating. The odd time the idle will drop while sitting at a light. Problem comes and goes.

I just replaced the TPS sensor as I had a cell. Cell is gone but this problem still remains. I also have new plugs and wires. Fuel pressure does not drop when cars idle is acting up.

If I touch the MAP sensor wire harness the cars idle bogged down like it does when driving. But no MAP cell. Is this normal?

Dont know if timming is off or not but it doesnt explain map issue

What do you suggest?

 

bump

 

i got the same problem on my ls. i even had a tps cel. i dont know what it is. i hope someone does.