how can an engine turn over without the key in ignition

Asked by May 26, 2016 at 11:01 AM about the 1966 Ford Thunderbird

Question type: Maintenance & Repair

just restored a 66 landau. had trouble cranking at first from a bad solenoid and poor negative cable ground. Now engine cranks and doesn't stop even if key is out of ignition. Only stops if battery is disconnected. What is wrong. Bad ignition switch?

5 Answers

104,435

Stuck starter solenoid, usually caused by low voltage, but have seen then fail right out of the box.

3 of 3 people found this helpful.

this is the second solenoid that has gone bad trying to start the car. what else is wrong? is something else shorted out?

104,435

Like I stated low voltage is the killer, so make sure the cables and the battery is good and the solenoid is grounded properly, you may have to sand the contact areas where the solenoid is bolted down.

2 of 2 people found this helpful.

ok will try that. The battery and cables are new and in good condition but area it is bolted is pretty rusted. May be contributing.

104,435

If it is too bad you may want to relocate the solenoid or run a separate ground wire to it.

1 of 1 people found this helpful.

Your Answer

Thunderbird

Looking for a Used Thunderbird in your area?

CarGurus has 1,076 nationwide Thunderbird listings starting at $6,998.

ZIP:

Ford Thunderbird Experts

  • #1
    Larry Sturgis
    Reputation
    1,660
  • #2
    Tom Demyan
    Reputation
    1,590
  • #3
    tennisshoes
    Reputation
    1,280
View All

Related Models For Sale

Used Ford Mustang
605 Great Deals out of 38,978 listings starting at $1,500
Used Chevrolet Corvette
175 Great Deals out of 19,362 listings starting at $3,941
Used Chevrolet Camaro
501 Great Deals out of 33,566 listings starting at $1,450
Used Mercedes-Benz SL-Class
71 Great Deals out of 3,495 listings starting at $3,800
Used Dodge Charger
379 Great Deals out of 33,469 listings starting at $2,000
Used Mercury Cougar
191 listings
Used Pontiac Firebird
10 Great Deals out of 767 listings starting at $2,500

Used Cars For Sale

2005 Ford Thunderbird For Sale
74 listings starting at $8,995
2004 Ford Thunderbird For Sale
6 Great Deals out of 129 listings starting at $7,777
2003 Ford Thunderbird For Sale
6 Great Deals out of 170 listings starting at $8,950
2002 Ford Thunderbird For Sale
9 Great Deals out of 362 listings starting at $6,998

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.