intermittent code 45 on 88 Chevy 2.5 liter

1988 CHEVROLET CELEBRITY
189,000 MILES
Avatar
MWXJ98
  • MEMBER
  • 1 POST
once a week or so the ses light comes on the goes off. it will be a little rough at idle before it comes on. when i look over the car it runs perfect. in the last 2 years Ive change out or rebuilt the fuel system,all but the coils in the ignition system, good on regular maintenance. blow the upper rad. hose and lost coolant and was told the temperature light didn't come on. cant find any spec to check any of the sensors on the motor with a meter.
Jan 2, 2012 at 11:40 PM
Advertisement
Avatar
SATURNTECH9
  • CERTIFIED EXPERT
  • 30,869 POSTS
You could have a bad coolant temp sensor that can set a code 45.
Jan 2, 2012 at 11:47 PM