this is the same problem that i have had for like a year. i got that same resistor off of ebay and i have tried to install it on 4 dif. cars. the problem is that they smoke crack and the "IAT" sensor that they say to just "plug it into" doesnt exist as they show it. i have looked in 2 hayns repair manuals for 2 of the cars even. still couldnt find it. i would sugest bying a CHILTON repair manual for your car you can get one on ebay for like $10+s&h this will probly help you with a lot of future mods to.