I have 97 dodge avenger i had a code po117 i changed the sensor and now it reads p0118 and it wont clear, does anyone have any ideas

Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
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try crank sensor or MAF

There are cam and crank sensors listed for that engine.
Is there a trouble code in the computer other than 304 or 302 ?
Do you know for a fact those cylinders are getting spark ?

here r your trouble code meanings:
1) p0123-throttle position sensor circuit, high input.
2)p0117-engine coolant temperature circuit, low input.
3)p0118-engine coolant temperature ciurcuit , high input.

Ok it seems to me like you may have to do some electrical checks, perhaps some voltage checks/drops in order to find out. For the P0118 you could use your scanner provided it can read live data. Look at the coolant temp snsr (cts or ect) and read its value it should read close to intake air temp snsr (IAT) value. The unplug the sensor value should change drastically and go negative. The jump the Two terminals and temperature should go high. If it does you've you've eliminated the circuit and the sensor it faulty. Make sure you have 5v reference as I said before you may have to voltage drop the circuit to make sure you're not loosing any voltage and that the circuit is intact. Good luck! Here are some links with more info and possible causes. http://www.obd-codes.com/p0118 http://www.obd-codes.com/p0507

transmission won,t shift from 1st gear,i changed the speed sensors and the shift module,and fluids ,filter,but still the same won,t shift,and ideas as to the problem?

Hi Ray:
P0118 - Engine Coolant Temperature Circuit High Input
The engine coolant temperature (ECT) sensor is a thermistor screwed into a coolant passage in the cylinder head. Sensor resistance is high when coolant temperature is low and resistance drops when coolant temperature increases. The powertrain control module (PCM) provides a 5 volt reference and a ground to the sensor. The PCM monitors voltage drop to determine coolant temperature. If the ECT reads less than freezing temp. when engine has been running for more than a few minutes, the PCM determines a circuit fault and sets this code. Or if the PCM determines the sensor resistance is out of specs, this code is set.

Symptoms of a P0118 could include:
Very poor fuel economy
A no start condition
Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
Illumination of MIL

A code P0118 may mean that one or more of the following has happened:
A bad connection at the sensor
An open in the ground circuit between the ECT sensor and the PCM
A short in the voltage feed between the sensor and the PCM
A bad PCM (less likely)
A bad temperature sensor (shorted internally)

Possible Solutions: First, if you have access to a scan tool, check the reading of the coolant sensor. Does it read a logical number? If so, the problem is likely intermittent. Perform a "wiggle" test by wiggling the connector and harness to the sensor while watching the reading on the scan tool. Watch for any drop-outs. Drop-outs would indicate a bad connection. If the scan tool reads an illogical temperature, check the resistance of the temperature sensor. If it is out of specs, replace it. If it is in specifications, unplug the sensor and, using a fused jumper wire, jumper the two terminals of the connector together. The temperature reading should now be maxed out to above 250 degrees F. If not, there is likely a problem with the ground circuit or voltage supply.

Check for 5 volts reference voltage at the connector. Also check for ground presence at the connector. If you do not have 5V ref. and/or ground continuity, check for these back at the PCM connector. If you have these at the PCM connector, then repair open or short between the PCM and the sensor. If you do not, remove the offending wire from the PCM and then check for proper voltage at the PCM pin. If it's present now, repair short on the circuit. If it isn't present after removing the wire and checking the pin, replace PCM

NOTE: Usually, P0118 is indicative of a bad temperature sensor, but doesn't rule out these other possibilities. If you're unsure of how to diagnose a PCM, do not attempt.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

P0160....O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P0700....Transmission Control System (MIL Request)
P0740....Torque Converter Clutch Circuit
p1297 doesnt exist in my GM code list sorry but in generic codes they only have a 0 infront of them

Tune up (plugs,wires,and distributor cap) was done on a '97 Dodge Avenger with the 2.5l engine because it wouldn't start. It ran for 1 day after the tune up,but will not start now. No spark at the plugs. Any suggestions? Thanks

Cam sensor fires the injectors so ignition control is not really what it does. The crankshaft sensor provides spark control, the Cam sensor provides injector pulse timing.
The actual code no it throws is much more use for us to diagnose...pls specify the Engine light code and I can be much more helpful.
Why did u change the cam sensor for an oil leak? that does not seem to be an appropriate repair.... anyhow more info=better help
:)