# My Toyota having issues again... **URL:** \ **Category:** Shift518 Automotive\ **Created:** [February 22, 2010, 7:56am UTC](https://forums.speedlife.net/t/my-toyota-having-issues-again/250483 "2010-02-22T07:56:17Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![usmc2801](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/usmc2801/32/6387_2.png) [@usmc2801](https://forums.speedlife.net/u/usmc2801)\ **Post date:** [February 22, 2010, 7:56am UTC](https://forums.speedlife.net/t/my-toyota-having-issues-again/250483/1 "2010-02-22T07:56:17Z")
Ok so my beater (90 Corolla 4AFE Auto) has been acting when it starts to warm up, when I start it, it runs fine until the gauge starts going up and it runs fine when its fully up to temp, however in between it has a stutter at idle and sometimes even stalls out, but will start back up only to shut off when put back in Drive. Only way I can get it going is to start it and give it a lot of throttle for at least 15 seconds then put it in gear and go quick. I have taken off the throttle body already and cleaned that as well as the IAC and have replaced the CTS. I have thought maybe water in the line so I have used HEET and Injector Cleaner also there is a new fuel filter on the car. Could this be an O2 sensor or EGR valve issue? There is no CEL coming on so thats making it 10X harder to diagnose. I am just not sure which sensors are effecting the car during the warm-up stage that would effect the cars AFR to make it stutter or stall out, that I haven’t cleaned or replaced. ---
**Author:** ![crazybrew609](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/crazybrew609/32/6319_2.png) [@crazybrew609](https://forums.speedlife.net/u/crazybrew609)\ **Post date:** [February 22, 2010, 8:07am UTC](https://forums.speedlife.net/t/my-toyota-having-issues-again/250483/2 "2010-02-22T08:07:09Z")
me = lost ---
**Author:** ![MclarenGP](https://avatars.discourse-cdn.com/v4/letter/m/57b2e6/32.png) [@MclarenGP](https://forums.speedlife.net/u/MclarenGP)\ **Post date:** [February 22, 2010, 8:17am UTC](https://forums.speedlife.net/t/my-toyota-having-issues-again/250483/3 "2010-02-22T08:17:03Z")
probably not the egr but to check it, hook up a vaccum line to it, should hold vaccuum, to see if the diaphram is working, also can try blowing , should hear the egr open and close.m In my experience , toyotas dont like throwing codes via flash test might want to go to dealer and have it scanned.