Question about 1992 Cadillac Eldorado

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Delayed start sometimes when I go to start the car I have to push on the gas pedal to start it up. When I let go of the gas pedal the car runs fine.

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  • Cadillac Master
  • 76,673 Answers

The most common cause of this is that the electric fuel pump (located inside the fuel tank) has a defective pressure check valve, this allows the fuel to drain back out of the filter and lines, when you try to start the air must be purged from the filter and lines, this causes longer than normal crank times and rough run for a few seconds after stat up.

Posted on Feb 08, 2012

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Posted on Jan 02, 2017

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Mustgo
  • 2359 Answers

SOURCE: running hot temp gets to 220 and above.often shuts

When the car is completely cool,check the electric fan(s) for smooth rotation.

Clean/check/change the thermo sensor,contact and wire.

===

Excavate air pocket in coolant system / check for head gasket leak

This test will kill two birds with one stone.

===

MAKE SURE THE COOLANT SYSTEM and ENGINE IS COLD!

RAN THIS TEST IN A WELL VENTILATED AREA ONLY!

You will spill some coolant during this air pocket purge test.......BE KIND TO THE ENVIRONMENT and ANIMAL please clean up after the test!

===

Put the front end on a pair of ramp or park your car on a VERY STEEP HILL (radiator facing top of the hill) .

Top of the coolant reserve tank

Let it ran for 10-15 minutes.

Monitor for air pockets escaping from coolant reserve tank.

Small amount of bubbles is OK at 1-5 minute mark

After the thermostat open up (after 195 F warm up) at
5-12 minute mark or after high idle you should see less bubbles.

If you do not see any in rush of bubbles then your thermostat may be partially stuck or rusted badly inside the thermostat hosing.

Give the thermostat host few gentle taps.

If you see larger bubbles surfacing after 15 minutes then should do a hydrocarbon (HC) dye test to test for potential head gasket leak.

Let engine cold down and top off coolant reserve tank.

Start monitor for coolant lost

===

A coolant flush is require every 2 years or 24,000 miles.

I recommend the thermostat that has a relief pop-let to reduce the change of burst radiator and coolant hoses.

Make sure you get a new thermostat gasket,black RTV and fresh coolant for the job.

===
Please post more information by clicking the comment link on the top right corner.

DON'T FORGET to RATE ME if my tip is helpful to you!

Posted on Dec 05, 2009

  • 173 Answers

SOURCE: Car goes berzerk

did it do this befor the other parts were replaced. sounds like some wires touching or grounding out.

Posted on Mar 26, 2010

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