whats with my Z's rpms?**video**

[NorCal_N/A]

just got 2 fuel injectors replaced, and i was driving it home from the shop and this started to happen......i revved it at the beggining but just got to 18 sceonds on the video and you fill see the rpms dip and hear the car struggling. No idea what it is. Any help?!

[BigTDogg (MA)]

just got 2 fuel injectors replaced, and i was driving it home from the shop and this started to happen......i revved it at the beggining but just got to 18 sceonds on the video and you fill see the rpms dip and hear the car struggling. No idea what it is. Any help?!

Where are you located? Are you near someone with a Datascan or Nistune?

[NorCal_N/A]

im in northern california. I dont know if im close to somebody with a datascan or nistune

[marty1mc]

Is it running normally under load and through the power band? If so, I would check the idle circuits. Here is a link to a good site with tons of information...

http://home.swipnet.se/e-solutions/IdleTech2.html

[NorCal_N/A]

yea its just really weird. just got 2 injectors changed out and now this is happeneing. and when the rpms drop down the car shakes like its gunna die. thanks

[Sdavne]

this happend to me as well and it just turned out tobe an air leak i recently took off the hard pipes for the intake and when replacing it i did not put the bottem part back in all the way and it was causing Rpms to dip when stoped. you mentioned having some work done to it recently and just somthing you could check easly. hope this helps!

[emiliog2276]

I was going to put a new post but i just saw yours. Have exact same problems. Injector one went out and just replaced it yesterday. Car kinda idles fine when in park but when in drive hesitates bad, when i turn A/C on it gets even worse. Will take vid and post it up.

[NorCal_N/A]

this happend to me as well and it just turned out tobe an air leak i recently took off the hard pipes for the intake and when replacing it i did not put the bottem part back in all the way and it was causing Rpms to dip when stoped. you mentioned having some work done to it recently and just somthing you could check easly. hope this helps!

Yea it does have an intake, but i put that one about 3 months ago and it was fine. what pipes are you talking about? the one the go into the "T" hose that connects to the air filter??? thanks for responding!

[BigTDogg (MA)]

this happend to me as well and it just turned out tobe an air leak i recently took off the hard pipes for the intake and when replacing it i did not put the bottem part back in all the way and it was causing Rpms to dip when stoped. you mentioned having some work done to it recently and just somthing you could check easly. hope this helps!

Yea it does have an intake, but i put that one about 3 months ago and it was fine. what pipes are you talking about? the one the go into the "T" hose that connects to the air filter??? thanks for responding!

If you have a vacuum leak it would cause the condition you describe. You can do a vac leak test with a air compressor set as 5psi.

[NorCal_N/A]

if it had a vacuum leak would it have a check engine light?

[Sdavne]

if it had a vacuum leak would it have a check engine light?

Not always, first off the check engine light does not always work with these cars it is OBD1 first of all and second they are old and some sensors go and the computor does not pick them up so sometimes it might and other times no. but if you want to check for a vacume leak you can also spray carb cleaner around all tubes and if rpms flucatuate when you spray over a tube thats where there is a leak.