could this be a bad ect sensor or something else

[black87gtbeauty]

i just installed 1.7 roller rockers and new lifters, after i put the car back together it was missing bad, so i took it back apart and readjusted the rockers and set the tinimg, it runs great when you first start it up cold, it will continue to run great and idle great until the temp reaches about 195, then the car runs very ruff and misses pretty bad, but if i let the car cool down the car will run great once again until it warms up. im thinking it is some type of sensor maybe ect

 

[HISSIN50]

Any codes? Is your username indicative of the year of your stang? Answers will vary depending upon whether you have a fox or SN.

Good luck.

 

[black87gtbeauty]

i work at a shop so im going to put the car on the snap on scanner tomorrow, but im not sure how much this will tell me considering my car is an 87

 

[jrichker]

i work at a shop so im going to put the car on the snap on scanner tomorrow, but im not sure how much this will tell me considering my car is an 87

You get the same codes and accuracy as you would with an 89-93 model 5.0. The one code you won't get is a 66 - mass air meter code.