Question about 1994 Cadillac DeVille
New tune up, new EGR valve, fuel pressure is ok, but the car still won't go over 35 mph PLEASE HELP!!!
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Posted on Jan 02, 2017
SOURCE: New fuel pump will not pump!
first all i do all of the repairs on my cars and i have got a bad fuel pump once but i would like for you to checkout all of the wire and make sure they are right and after make sure the fuel pump relay is good and the fuse for the sending is good
Posted on Feb 12, 2009
The idle may be to low or the motor is just old and a new set of rod bearings is need with an oilpump to bring the pressure back up.
Posted on Jul 14, 2009
First, obviously, put gas back in the tank.
Check the fuel pump fuse, (20 amp yellow fuse in the lower left corner of the group). If that is not blown, turn the key on and pound hard on the bottom of the fuel tank. The fuel lubricates the fuel pump, once it runs dry, the pump can lock up. Once the pump is immersed in fuel again, a sharp jolt will unstick it and let it pump up to pressure again. If it locks up for too long, the pump will burn out and need replaced.
We found this out by accident, got mad and pounded on the bottom of the tank and the pump jumped to life.
Posted on Aug 22, 2009
The most common overheating problem with the Northstar engine is a blocked purge line. It's job is to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.If the hose is clear, check for blockage at the nipple on the tank.Or trace the hose back until you find the blockage.The hose goes in to the engine to a crossover and comes out the other side to near the thermostat housing,the blockage may be there.
Posted on Mar 28, 2010
Had a computer on my 1990 Cadillac Deville bad, after changing plugs, wires, cap, fuel injectors, egr valve, etc.
The computer was not firing an injector and i had a miss and rough running mostly at 35 mph on the roads. It bucked like a bull.in a rodeo.
Posted on Jul 02, 2010
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