Lots of codes

[rubydist]

It will continue to run way rich until you fix the 114 problem - either the intake air temp sensor is bad, or the wiring to it is bad. I've seen this code result from an otherwise good sensor that was taped up because the guy had an aftermarket intake on and there was no place for the sensor. After he removed the tape from the sensor, the code went away and the engine ran like it should.

 

[redsho]

It will continue to run way rich until you fix the 114 problem - either the intake air temp sensor is bad, or the wiring to it is bad. I've seen this code result from an otherwise good sensor that was taped up because the guy had an aftermarket intake on and there was no place for the sensor. After he removed the tape from the sensor, the code went away and the engine ran like it should.

I thought someone said the code 114 was normal, being that it's cold out now. Anyone have any ideas on the other codes.

10 more gallons, 145 miles --- still poor

 

[projectSHO89]

Check your thermostat and the ECT sensor. Do not waste time screwing with the IAT sensor.

 

[redsho]

Does anyone know the proper range of pressure for the full pressure regulator? I took it to the shop as I had a gut feeling the item was going bad. It was tested at 75psi and they state it should be around 40? Does this sound right?

 

[AREA 91]

Does anyone know the proper range of pressure for the full pressure regulator? I took it to the shop as I had a gut feeling the item was going bad. It was tested at 75psi and they state it should be around 40? Does this sound right?

75 PSI?????

There's your problem!

 

[redsho]

When the regulator fails, wouldn't the pressure fall instead of rise? Would the faulty regulator lead to poor gas mileage and higher idle, or do I have other problems beyond the regulator? The car will be going to the shop for the replacement tomorrow. Hopefully, this is the only thing wrong with the car.

 

[projectSHO89]

Not necessarily.

The regulator serves much the same purpose as does a dam on the navigation pool of a river. It keeps the pressure at a certain level and, when the input pressure rises, it bleeds off that extra pressure by bypassing the extra volume of fuel to lower the pressure.

If you unplug the vacuum line to the regulator, it will cause the fuel pressure to spike up dramatically.