The daily started acting up today. Sounds restricted when I rev it. Doesn’t shift correctly, goes up to 5k Rome and only shifted when I let go of the gas. Replaced map and mat sensors. Still am getting codes 34 and 44. Also runs hot.

‘87 V6 auto

Because O² sensors are cheap and easy to replace I would start there. As for running hot....Fieros run hot. Does your fan run while the car is moving?

quote Originally posted by Gall757: Because O2 sensors are cheap and easy to replace I would start there. As for running hot....Fieros run hot. Does your fan run while the car is moving?

Yeah, my O2 sensor is cracked anyway. I am gonna chop off the cat.
The Fiero runs really hot though. It used to run at 150F driving around, now not even started for 5 minutes it’s at 250F.
My fan runs when I have the vents on, otherwise no, I need a new relay.

150 F is a cold engine that uses extra fuel. Minimum normal operating temperature is around 170 F and your thermostat should be 195 F. You will get false readings after the engine is turned off because there is no coolant circulating.

The fan is supposed to run when you have the A/C on..

[This message has been edited by Gall757 (edited 05-02-2018).]