jimmy2120

so been having problems for a while and ive been going over some things cleaning checking for vacuum leaks and what not but i cant find any vacuum leaks, just cleaned my throttle body, new MAF sensor, cleaned air filter, but when i start my car up it idles fine. idles a little high, around 800, but its steady. when i put it in gear RPM's immediately drop to 600, put it back in park rpms stay at 600. now when i have too many things running like AC or heat and i have my lights on and what not, the rpms drop to around 400. after this happens the car starts to lope bad and rpms jump around and eventually cuts off. i have taken it to 3 mechanics. one says loose wiring somewhere, another says bad tune or pcm is bad, another swears up and down a vacuum leak. has anyone had these kind of problems and could maybe give me a more definite answer?

Jontall

You have to go to Autozone and have them give you the codes it's throwing.

gconnoyer

iTrader: (1)

auto or manual?

ULTIMATEORANGESS

iTrader: (4)

what mods do you have?

jimmy2120

i know what codes its been throwing. the first time i got it checked out it was saying bank 2 o2 sensor system 2 lean and MAF sensor was bad, i changed the MAF and changing the o2's on the first. after i cleaned the throttle body it came up something where the blade was catching or something but i fixed that also.

jimmy2120

its an automatic.

jimmy2120

i got k&n CAI, pacesetter longtube headers, spintech catback, and tune.

impulsegoat

iTrader: (4)

Check your o2 wires out before you change the o2s. Could just be a frayed wire or bad connection.

RedfoxGTO

Mine did this once... and just once... I have no idea why... but someone told me it probably had something to do with the ECU.

jimmy2120

yea ive checked the o2 wires also, there wasnt any damage to the wires and they were connected pretty good from what i could tell. they werent loose at all.

jimmy2120

yea ive been told that wires under there can get pinched and call the car to start messing up but ive also checked that as well. i mean im no mechanic but the wires did not seem like they were in a bind in any way under there.

402GOAT

iTrader: (2)

if it is custom tuned you may want to talk to your tuner and just have him set the idle up a little more. he should be able to. i have mine set to about 1000 rpms but thats to help hide the big cam a little bit.

jimmy2120

well see i have had this tune for about 2 years now and its just now starting to mess up. so i know there is definitely something wrong with the car and even if i get the idle raised, in the back of my mind im still gonna know theres something wrong with it so i just really want to get it fixed. oh and for future reference for anyone trying to help me out, i have also had the fuel pump checked out, its working right 2....