How to tell if car has stock chip?

Dave14 · Feb 17, 2004

A friend of mine just bought a 2000 Mustang GT and it is having minor ideling problems. I was told this could be caused by an aftermarket chip. How can i tell if the chip is aftermarket or stock? Thanks

Slapyo · Feb 17, 2004

if he had an aftermarket chip in his 2000 gt you would be able to see it sticking out of the computer. you would have to pull out the panel on the right side of the car where the passengers feet are. the computer is right behind there. the chip would plug into this. if there is no chip plugged into it, that means he doesn't have one. i'm pretty sure that all chips are plugged into the computer and visible, unless the computer was reflashed.

i think. i'm pretty sure i'm right but if i'm not someone else will step in and correct me.

oogtdude · Feb 17, 2004

over a nice candle light dinner, ask her nicely

JonJon · Feb 17, 2004

where is the computer
passenger door somewhere ?

oogtdude · Feb 17, 2004

behind glove box

oogtdude · Feb 17, 2004

hmm.. might be passenger kick panel..i forget.. someone will respond

sl03gt · Feb 17, 2004

99+ GT's have a little bit of a rough idle. A aftermarket chip should smooth out your idle. Stock there is no "chip". There is a computer that is programmed. You can either flash the computer or add a chip. I believe on the 99+ the computer is on the passenger side behind the kick panel. I could be wrong though. I have had a 2001 and now a 2003 GT and the both idled slightly rough, not bad though. I asked the same question and was told that in 99 Ford started using an agresive cam lift( Camshaft lift: .505/.534-inch lift Duration (I/E) @ .050" 186/194 ) which contributes to the slightly rough idle.

el_kid_1 · Feb 17, 2004

The ECU is located behind the passenger kick panel.

oogtdude · Feb 17, 2004

sl03gt said:
99+ GT's have a little bit of a rough idle. A aftermarket chip should smooth out your idle. Stock there is no "chip". There is a computer that is programmed. You can either flash the computer or add a chip. I believe on the 99+ the computer is on the passenger side behind the kick panel. I could be wrong though. I have had a 2001 and now a 2003 GT and the both idled slightly rough, not bad though. I asked the same question and was told that in 99 Ford started using an agresive cam lift( Camshaft lift: .505/.534-inch lift Duration (I/E) @ .050" 186/194 ) which contributes to the slightly rough idle.

that might be your iac...my oogt idled rough as my iac went bad..then purred like a kitten..my mach purrs also

daver01 · Feb 17, 2004

i would def. try cleaning iac first; just do a search of 4.6 group & should be able to find a walkthrough of it. really cleaned up my idle probs.

How to tell if car has stock chip?

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