I don't really know how you came to the conclusion that they had to much pressure, but I doubt new hoses had any effect on how it ran. It sounds like it is ready for a good tune up, with new spark plugs and wires, oil change, cap and rotor etc
ok let forgr
lets forget the collant issue, the truck also hesitates and at time wont pick up speed, three code thats been there 2 yrs befor the problem started which is crank collation, and two o2 sensors. but when out to eat and just checked under body one of the catalitic conv look like it has gotten hotter than the other. they are not even a month old and one looks more worn.
Okay, unfortunately I don't have much experience with the 5.7 vortec (witch I'm assuming you have) i have heard of bad o2 sensors effecting performance because they relay information to the truck to control fuel/air ratios. Sorry I can't be of more help and I hope you come across the solution to your problem soon
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SOURCE: Thermostat on 2002 Chevy Impala
the best thing to get is the Haynes manual for your car at advanced auto or autozone or somewhere like that and the book will tell you how to take everything apart and put it back. i think the manual is about $16.00
SOURCE: 97 Catera low coolant light is on
sensor is part of the overflow tank. lift the tank up and unplug the plug on the bottom. you can just cut off the plug and splice the two wires together or take a bread tie and strip off the paper then jump out the plug. to replace the sensor you must buy a new tank.
SOURCE: Vaccum hose diagram for 97 chevy tahoe 5.7 liter
I have the diagram you need. If you send me your email I will scan it off and send it to you. [email protected]
SOURCE: 95' Cadillac DeVille has no heat
There is several ways to see. 1. It could still be the heater core, try blowing air in to IN house, if it comes out the OUT hose strong, its not that. 2. It is posible there is an a pocket in the system. Try bleeding the air hose, that could be it. 3. Take the glove box out, disconnect the air bag CAREFULLY! Start the car, And turn the heat all the way up, then all the way down. U should see a arm move back and forth. MAke sure it goes ALL the way shut, and open. 4. It could be that the doors in the dash don't work. I'm not sure how to do this. Hope the other work!!
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