Disconnecting Battery

cthog
0

Asked by Apr 01, 2013 at 02:50 PM about the 1994 Oldsmobile Cutlass Supreme 2 Dr STD Convertible

Question type: Maintenance & Repair

I have a 1994 Cutlass Supreme Convertible, 3.4 that we keep at our vacation home.  I disconnect the battery each time we leave for extended periods.  Would this cause the Check Engine Soon light to come on?  Am I harming the computer in any way?

2 Answers

tennisshoes
71,445

I don't believe that you are harming the computer doing that due to the length of time it is disconnected. As far as the check engine light it may indeed have a problem, mass air flow sensor dirty, O2 bad, TPS out of specs, but everytime you disconnect the power of an extended period the computer has to relearn what car it is in and this can take up to 40 minutes to so. Run it for a while then have the codes checked and then come back with them and we will go from there.

2 out of 2 people think this is helpful.
Js08016
51,775

No harm is being done to the ECM (computer). But since your car is OBD I, each time you disconnect the battery you're clearing the trouble code(s). My '93 Chevy Caprice used to do the same thing sometimes when I'd not use it for extended periods. Sometimes it would sit for 4 to 6 months. It would set an oxygen sensor code that would go away on its own after a day or two. Probably a speck of dirt or corrosion from sitting is getting on one of the sensors & causing the problem. See if it goes away on its own after a few days of normal driving. If so, I wouldn't worry about it. If not then, as others have said publish the code(s) here & we can help. HTH. -Jim

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Oldsmobile Cutlass Supreme Questions

Oldsmobile Cutlass Supreme Experts

#1 munron
munron
Reputation 520
#2 tennisshoes
tennisshoes
Reputation 340
#3 Tom Demyan
Tom Demyan
Reputation 300
View All

Related Models For Sale

Used Chevrolet Monte Carlo"
13 Great Deals out of 2,023 listings starting at $1,436
Used Buick Regal"
131 Great Deals out of 9,070 listings starting at $1,699
Used Chevrolet Impala"
840 Great Deals out of 31,611 listings starting at $1,200
Used Pontiac Grand Prix"
37 Great Deals out of 4,335 listings starting at $1,390
Used Chevrolet Camaro"
561 Great Deals out of 35,451 listings starting at $1,995
Used Ford Mustang"
684 Great Deals out of 42,312 listings starting at $999
Used Chevrolet Tahoe"
798 Great Deals out of 34,111 listings starting at $1,500
Used Pontiac Firebird"
18 Great Deals out of 876 listings starting at $2,995