Might check drive axles just to make sure one has not broken a cv joint.
SOURCE: 2005 PT Cruiser P0700, P0720, P0731 stuck in low and Speedometer
YOU HAVE A DEFECTIVE OUTPUT SPEED SENSOR ON TRANSMISSION..ABOUT 40 BUCKS,DEALER PART..SCREWS INTO FRONT OF TRANS..NEAR LEFT INNER FENDER,YOU MIGHT WANT A MECHANIC TO REPLACE..
SOURCE: 1997 cadillac deville engine is overheating.
When you say thermagasket kit,I assume you mean one of those silly DIY gasket sealant liquids that you put in the engine.
You should not use these type of products on ANY engine let alone the Northstar.
To cure a headgasket leak, replace the headgasket.....there is no miracle cure.
On the Northstar, you will damage the cooling system,plus you will continue to have issues as time goes on.
How do you know you have a blown head gasket?
Here is something to consider.......
The most common overheating problem with the Northstar engine is a blocked purge line(small hose).The purge line is designed to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank (not the cap) ,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 close to the thermostat housing,the blockage may be there.
SOURCE: 98 deville 32 valve North Star OVERHEATS after 33
The most common overheating problem with the Northstar engine is a blocked purge line(small hose).The purge line is designed to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank (not the cap) ,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 close to the thermostat housing,the blockage may be there.
Also note that the cooling fans don't come on until the coolant temperature hits around 225 degrees.
During normal highway driving the fans will very rarely come on(if at all) due to constant air flow through the radiator.They will only usually come on in heavy traffic conditions on a hot day.
But......if you have the Air Con switched on, the fans will run all of the time.
58 views
Usually answered in minutes!
×