RONLANCELOT12522

hello my name is Ron,
I have a 1995 mustang 3.8 l. new reman engine error codes came up. have a hesitation have to feather the throttle at times. Also when car heats up it has a tendency to stall. Any help will be appreciated?

petrock

Exactly what codes is it throwing? Can't help without more info.

NeoTokyo

Yup, could you get the codes to us please?

Also, welcome to MF.

RONLANCELOT12522

Sorry the codes are po171 & po174...bank 1 & bank 2 lean...

Matt's 95 Stang

I didnt look up the code but the stalling after warm up is a normal tell tell sign that the cats are clogged.

Matthew

RONLANCELOT12522

it doesn't really stall it becomes sluggish...

petrock

http://www.obd-codes.com/p0171
http://www.obd-codes.com/p0174

Both are indications of either the Mass Air Flow sensor is dirty and needs to be cleaned/replaced or you have a vacuum leak downstream of the MAF sensor.

Good luck...

RONLANCELOT12522

Where would the down stream be by the maf?

NeoTokyo

anything after it.

Like the name says, IE your in a river fishing, you cast your line upstream and it floats downstream. You are the MAF.

The flow of air is the same.
The flow of exhaust is the same.

The filter is upstream of the MAF
The Throttle body is downstream of the MAF

The 1st O2 sensor is upstream of the cats
The 2nd O2 sensor is downstream of the cats


Hope that helped, sometimes you just need a mental image.

NeoTokyo

btw, when you clean your MAF it is best to remove the sensor from the housing but DO NOT touch the wires inside the sample tube, just spray them several times with MAF cleaner.