To replace the O2 sensor in a 1999 Dodge Intrepid, first, ensure the vehicle is cool and disconnect the negative battery cable. Locate the O2 sensor, which is typically found in the exhaust system, either upstream (before the catalytic converter) or downstream (after the catalytic converter). Use an O2 sensor socket or a wrench to unscrew the old sensor, then install the new sensor by threading it in and tightening it securely. Finally, reconnect the battery and clear any diagnostic trouble codes if necessary.
A temp sensor
The speed sensor screws into the side of the trans/axle on earlier Intrepid models, I would assume it's still there on a 99..... Yeah, I found the speed sensor, it was located on the back of transmission. Had little difficulty accessing it, but once replaced it, it fixed the problem.
In the fuel tank.
your switch is going out....you may need to replace it
It can, but not always.
it doesn't have one
yes
There is no fuel pump inertia switch on a 1999 Dodge Intrepid.
It controls the operation of the transmission.
ECM means "Engine computer module"
If your car is anything like my 2001 intrepid, it is because only one of your radiator fans are coming on when the temp sensor tells your fans to turn on. You hear a fan kick on, but it is only one of them. There are two.
Yes they will , just change around the valve covers and intake from the new to the old.