rpm issue

[saniutza]

i don't know whta's going on but this started after i changed my intake manifol.. i got the RPM performer II a new TB and EGR from edelbrock... now before when the engine was cold the rpms used to fluctuate sometimes even stall, on cold weathers.... not it wors fine but i have another problem.. don't matter if it's colld or hot, when i stop at a light or let ut idel stais around 900-1000k rpms then after maybe 5 sec goes down to 750-800 which it was set to idle... rigt after i got it out of the shop i wanted to idle around 800.. and it does but aftre it's in the 1000k rpms range and then goes down... rpm sensor or something might be bad?

 

[ECU5.0]

ive got the same problem, happened after i put my cobra intake on....like to know what the deal is?

 

[saniutza]

haha then it might be something with the intake, maybe too much air flow going through the stock heads ... i though osmething was mest up....