Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
1978 Cadillac Eldorado Average MPG?
About how much MPG does the 1978 Cadillac Eldorado get? (425 cu" engine)
5 Answers
- fire4511Lv 71 decade agoFavorite Answer
That was not a gas mileage car. On the road, driving gently, you could get in the 15-18 MPG range. In town you may get 8-12. If you take advantage of the engine power, and drive it hard, that car will pass anything on the road except a gas station. You could end up in the 5 MPG range
Source(s): 29 years in the auto business - How do you think about the answers? You can sign in to vote the answer.
- 5 years ago
Batteries and alternators tend to go bad together. Get into a warm garage if you can to check a few things. Check battery ground and alternator cables. Replace or trim and clean if badly corroded. Check alternator output. You can use an ammeter, but a voltmeter is easier,. When the car is running, check battery voltage with accessories off it should read around 14v. Kudos to you for keeping a '78 Eldy on the road. I love those cars. Your fuel bill must be enormous, however. If all that is good, you may need a new starter. They are cheap for that car and easy to put in. I have a feeling your alternator is toast, since your car stalled and would not restart, and you have a fairly fresh battery. But check your cables too. They could cause the same problem. OR LUCIFER MAY HAVE GOTTEN INTO YOUR CADILLAC AND REPOSSESSED IT!!
