intermitent check engine light

[Highoutput5.0]

i have a 94 and the check engine light comes one only after moderate to hard acceleration and stays on for about 20 seconds then turns off...less than 20 if accel wasnt hard, more after hard accel...any thoughts will be helpfull..thanks...i have had the obd 2 scanner hooked up while driving but it can never pick up the code before the Check light turns off

 

[MysteryMachine]

Our cars use a obd 1 scanner. It plugs in under the hood. Mine does that for insuffecent egr flow might be your problem

 

[R.J.]

Same here with insuffecent egr flow. I pulled the codes and got that specific code. I forget the number. I put a vac pump on my egr and it moved fine so I pulled it off and cleaned it and he intakewhere it bolts on. The check engine light has not come back on.

 

[bill302]

obd 2 scanner is the wrong scanner if yours is like mine the plug in under dash will allow a obd 2 to hookup but i believe its a dummy plugin a ford thing i don't know. but your system is a obd 1 unless you have installed a 4.6 or 3.8. even if light is not illuminated you can retrieve codes at plugin on passenger side fender under hood about 5 inches forward of firewall it will be incased in a plastic case fastened to passenger side fender. drive car to autozone have them retrieve codes from this plugin or do it yourself with a test light click on link below. then post codes and get some replys from these guys you can throw 2-3or 4 codes sometimes (i was throwing 5 i reset t.p.s. and replaced cos2 sensor and cleared all 5) and only one sensor will need cleaning or replaced,believe me these guys will save you money good luck and welcome to stangnet.

 

[MysteryMachine]

332 lol i know it cause it shows up like every damn day. Mines cause them plastic vac lins broke and i have them rigged together

 

[fiveotony]

could be maybe an O2 sensor as well

 

[HISSIN50]

Welcome to the boards! As mentioned, the 94-95 GT's are OBD-I and the 6 cylinder models were OBD-II (hence why there are both plugs).

Good luck.

 

[Highoutput5.0]

so can you read any codes with the obd 2 scanner on 1994 models?

 

[HISSIN50]

so can you read any codes with the obd 2 scanner on 1994 models?

Sure, if you have a V6.

 

[95cobraguy]

u need to find out if there are any trouble codes stored in the computer, until then nobody will have an answer to your problem.