Question about Cars & Trucks
Quite a long list of codes. The first thing to do is clear the codes and see how many return after driving the car for a few days.
The codes that include 301 - 306 are for cylinder misses on the selected cylinders. 301 is cylinder one, and so on.
But my first problem is the year of the car. Ford uses two digit codes for most cars built before 1996. Including yours.
The three and four digit codes you listed look more like OBD2 codes for models built after 1995.
So before you proceed, you need to verify the codes you were given are from your car and it is in fact a 1994.
Posted on Apr 24, 2013
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Posted on Jan 02, 2017
I would be very hesitant about just going in and replacing parts/sensors, especially those diagnosed from Electronic Control Module (ECM) Diagnostic Trouble codes (DTC's) alone, as quite often when multiple codes are present, they are often related to a songle malfunction/failure (Such as coil codes, and O2, rich/lean codes, etc...) - A p0171 and 0174 code is not indicative of a faulty MAF sensor - it is a code set when a lean condition is detected within the vehicle's exhaust...often caused by vacuum leaks, EGR valve malfunctions, BAC/IAC ( Bypass/Idle air control) valve malfunction, DPFE sensor malfunction, or the MAF "hot wire" is dirty, and can be cleaned with the correct cleaner, but instead of replacing a $250 MAF sensor; only to later find out that if you had the vehicle repaired by a trained technician, a $3 vacuum hose and a $50 ignition coil had initiated the multiple DTC's - So, sometimes it does pay to use a trained technician; especially with so many codes present - Like I said - If I were going to do the work myself, I would erase all the codes (Disconnect battery cable for about 10 mins - this will also erase the block/learn ECM settings and it may search for idle for a bit, but will straighten out with time - reconnect battery and start the car - then after the light re-illuminates, re-pull the codes, and most importantly test the sensors/parts indicated by the DTC's before replacing anything - that is if you want to fix it the most cost effective way possible, but, if you have plenty of money to waste you could always just go replace whatever the DTC's tell you is out of specifications, regardless of the cause...this might fix it, but may not as well - if you got lots of money and feel lucky it's the way to go - if not, test those parts and sensor before replacing them - there is a process for testing each of them....Thanks
Posted on Aug 22, 2009
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