I have an 88 civic dx 4 door. Its bone stock mpfi automatic. When it gets warmed up it throw 1,6,7.

I know they are o2 sensor, ECT, TPS. But why would it throw all 3 at once. Anybody have any Ideas what I should check out?

 

Maybe they are all bad.

 

Like any code bad sensors or bad wiring

 

it seems very
serprate but not

check the sensor ground wire for TPS,ECT

o2 my be result of a short and cuase fail
or the o2 is bad and other 2 problems are just a resultant of the faulty wiring or some type of tampering.

falkhen