Check Engine light in conjunction with transmission shifting sparatically

1993 FORD BRONCO
200,000 MILES • 5.8L • V8 • 4WD • AUTOMATIC
Avatar
JBITELY
  • MEMBER
  • 3 POSTS
The thing seems to do this worse when it is really cold outside but it will start and drive then at low speeds predominantly the check engine light will come on and the transmission will shift up or down UN-neccessarily and continue doing so untill i gas on it? very strange i suspect it to be ECM issues but the air temp making it worse makes me think otherwise....input please!!!!! it is the E4AOD trans.
Jan 23, 2014 at 10:40 PM
Advertisement
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
check fluid and scan for codes first
Jan 24, 2014 at 6:53 AM
Avatar
JBITELY
  • MEMBER
  • 3 POSTS
Ok so I scaned for codes and had egr flo insufficient so I checked that out and found a broke off vaccum line so I replaced it..drove it to work that afternoon did excellent no check engine light or anything but when I got off at 5am it started cutting out and almost dying at times then began backfiring when I tried to floorboard it...when it would cut out the check engine light would flicker ad well as the right turn signal indicator? Help please!
Jan 26, 2014 at 8:50 PM
Advertisement
Avatar
JBITELY
  • MEMBER
  • 3 POSTS
Also the transmission fluid level is good
Jan 26, 2014 at 8:55 PM
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
rescan it and check feul pressure with a gauge auto parts rent them.if trans still screwing up have a trans guy look at it.
Jan 27, 2014 at 6:15 AM