Question about Nissan Quest
If there is a "service engine soon" light on, have the codes read by an auto parts store and determine the fix. If no light, determine if the lack of acceleration is accompanied by missing like misfiring spark plugs. Bottom line in my opinion is no acceleration is either a lack of fuel, or failure of the spark advance..
Posted on May 07, 2014
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Posted on Jan 02, 2017
SOURCE: 99 cadillac de ville
the coolant temp sensor is at the rear of the engine and is a "bad word" to get to. the 3 relays are at the bottom,under the fans. if you remove the driver side fan out of the way( 2 10mm bolts holding the fan) you should have good access to them. they do have locks on them and may be tricky to unplug. there is a 7/16 nut holding the relay plate down. remove and it should be easy to remove them.
Posted on Jul 09, 2008
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Posted on Feb 28, 2010
The normal coolant temp should be around 200-215 degrees.
The cooling fans will come on at around 225-228 degrees.
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.
Posted on May 22, 2010
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