i have a 1994 Plymouth Acclaim with a 4 Cyl Motor and the Check Eng light comes on after i start driveing it for a few miles after the motor worms up really good. so i tho it needed a tune up so i replace the Plugs Wires cap and rotor and new air filter. so it still did the same thing took it to auto zone and they told me it was the inline fuel filter so i replace that and i just put a new fuel pump in to cus i tho maybe that was it but it still dose it. i been useing fuel cleener and that don‘t help. what could it be?? please help.
I believe you can get a code by turning the ignition key on and off three times then back on and wait for the check engine light to blink. You gotta watch careful It might only blink once pause then two then five. What you have to do is count the flashes and write them down. That code will tell you what the problem is. Assuming none of the other lights are red or amber it is safe to drive but watch the temperature guage and the oil light or guage carefully. You might have and emissions sensor going but the code should pick that up.
More than likely it is one of two or three things. 1. The O2 sensor - i.e. oxygen sensor 2. The EGR valve - i.e. inert gas recirculation valve 3. or something in your emissions system The best way to find the actual problem is NOT to just start swapping parts rather have a mechanic read the code or codes that the on-board computer has recorded. Or, you can buy a code reader at an auto parts store and do-it-yourself, just follow the manual. Hope this helps.
