Question about 1997 Chevrolet K1500

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Last time took it in for safety & emmissions inspection they mechanic said that I should replace the hose fitting that enters the top of the engine. I'm not sure what it is but the hose is about a 5/8 inch rubber that connects to a silver metal fitting that enters the engine on top front near the center. Apparently they have a high failure rate due to corrosion near the 100,000 mile mark.

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Yes, these do have a high failure rate. This hose goes to the heater core, and if it completely fails, the hose could disconnect itself leaving you stranded with an overheated engine. Also, the older it gets, the harder it is to unthread out of the intake manifold- more time more money. The part is only $10 at parts stores and is made of steel instead of pot metal. The only real challenge is getting the old one off without breaking it off the engine.

Posted on Feb 03, 2010

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The hose is kind of tough since you have to get access to the one fitting going to the rack & pinion unit and route the hose as it was before.

Just tough though, not impossible. I believe I took off the drivers wheel with the car on jack stands & was able to reach from underneath to do that connection a few years ago, the rest isn't as bad.

Get your replacement hose, Pepboys or Autozone, or the dealer & make sure you have the correct size open end type wrenches to fit the hoses & just be careful.

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This is provided you have confirmed that a plugged or partially plugged heater core is your problem, and not a vacuum problem, or heater control valve or similar is not defective. Yes it certainly sounds like some blockage/restriction there, but may I advise you to try this first, as it may save a lot of money, time, & aggravation. Go to Rona, Home depot, or similar hardware store & buy a drill pump. (about $25.00 in Canada) but there are cheaper ones around.
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Make sure you take all safety precautions, such as eye protection in case CLR splashes in your eyes, and make sure engine is cool, pressure is relieved via removal of rad cap & to avoid burn from hot coolant when hoses removed. My guess is that your into $20-$25 tops, and a whole lot less work. Let me know how it goes.

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Need info on a 2005 Ford Focus 2L TDCI

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