Question about 1991 Chevrolet Caprice

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91 caprice classic heater core leaking and now engine will not shut off when key turned off and in pocket ..still running.. New ignition switch as well

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Sounds like you have a short in the wiring some place that is providing power to the ignition and computer with the key switch off.
You may have to test the circuits with a test light to find the short.
Could also be a faulty relay.

Posted on Dec 03, 2014

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Posted on Jan 02, 2017


had same problem need to flush out the heater core .. plus make sure you do not have a air pocket in the coolant system after you changed the T-stat

Posted on Oct 17, 2008

  • 3 Answers

SOURCE: 91 chevy caprice classic, engine hesitates

Check your fuel filter and air filter. That is usually where your hesitation starts.

Posted on Mar 17, 2009

  • 61 Answers

SOURCE: how to replacemy heater core in a 92 chevy caprice

with or with a/c

Posted on Dec 13, 2009

  • 1 Answer

SOURCE: F150 ford truck 1990 key wont turn over engine new ign. switch

we have 1998 ford f15 we replaced the ignition and it still wont start the truck,, the key turns over now and the radio and everything comes on but it wont start, what is wrong???

Posted on May 09, 2010

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1994 Caprice LS. Little to NO heat.

It will be the heater core. If you can smell it inside the car and it's steaming up the windows the core will need to be replaced. Remove the heater core housing and check to make sure its leaking from the core itself. You might get lucky and have a leak from the hoses running to core instead. Hope that helped.

Nov 17, 2011 | 1994 Chevrolet Caprice Classic

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I have a 94 caprice classic that wil crank but it wont turn on. It just got a new ignition and key for it and it still is doing this problem. it says press key fault and low oil pressure then it shuts off....

You vehicle is equipt with a fail safe switch incase your oil pressure is low it shuts off the fuel pump, More likely your oil pressure switch will need to be replaced,its 2011 relace the oil pressure switch more likely the sensor itself has failed,(oil breaks plastic after awhile,) make sure you have motor oil in the crankcase check the level,

May 04, 2011 | 1994 Chevrolet Caprice Classic

1 Answer

All three Ignition keys will not turn over engine. pass key fault light on. engine will start with key on and use of remote starter switch. starts then shuts off

you will need to replace the ignition switch. the wires running from switch have broken very small wires. common it is not seeing the key chip and causing security to go in theft mode

Sep 29, 2010 | 1996 Chevrolet Caprice Classic

3 Answers

1994 chevy caprice no heat. changed termostat. antifreeze full. fans in back of radiator are not moving

Heater core is plugged or you have a air pocket. If you take off the heater lines and try blowing through them both ways. The fans will not move until the engine gets hot.

Oct 24, 2009 | 1994 Chevrolet Caprice Classic

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Ignition key needs programing or its faulty.A

faulty Key disarms the immobilizer for about 2 seconds then shuts down the engine

Jun 12, 2009 | 1994 Chevrolet Caprice Classic

1 Answer

Were do i hook up my other hoses for my heater core

from the radiator ? If that is the case, the other one goes to the thermostat housing outlet.

Feb 17, 2009 | 1995 Chevrolet Caprice Classic

1 Answer

1995 caprice classic, No warm heat

Have you checked the heater core hoses? If they are not "hot" the heater core needs to be replaced

Feb 07, 2009 | 1995 Chevrolet Caprice Classic

1 Answer


had same problem need to flush out the heater core .. plus make sure you do not have a air pocket in the coolant system after you changed the T-stat

Oct 16, 2008 | 1994 Chevrolet Caprice Classic

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