Question about 1992 Cadillac DeVille
Car will only start with foot on the gas pedal. once i let go of the gas it automatically dies. same with driving.
Posted by Anonymous on
Change fuel filter, and air filter. After your change the filters hook a fuel pressure guage to the fuel rail. The spot to hook up at looks like a valve thats on your tire. Should be no less than about 35 psi. If fuel pressure is good and it still struggles during warm up. Look on the throttle body and see if the linkage can be adjusted or if there is a adjustment screw. All else fails change throttle position sensor.
Wouldnt hurt to put new spark plugs in if you havent already done so.
Posted on Feb 12, 2009
ALL Grounds Need to Be Checks on this Including BATTERY They MUST Be CLEAN this Sounds Like a Poor Ground Problem.
Posted on Jun 01, 2009
SOURCE: Car bogs down when given gas.
This problem is most commonly caused by a weak fuel pump. It will need to be checked with a fuel pressure guage. If you can obtain a fuel pressure guage you will need to observe the fuel pressure while accellerating to see if it drops out.
Posted on Jun 20, 2009
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.
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Posted on Dec 05, 2009
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