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I just changed out the h2o pump and the car quits running when it warms up starts when it cools down. this problem occured before h2o replacement.who ever h2o pump was faulty. what would cause this
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check fuel pressure make sure they are within specs. then if it is , very possible that you a problem with ignition module. this module is known to fail, and my experience using rebuilt is not good it took 6 unit before we got a good one. good luck
sounds like you have a fuel pump problem, fuel pumps will usually get hot and then shut off allowing it to sit 30 mins lets the pump cool down allowing it to start pumping, the way you can test it is get a can of starting fluid the next time it quits raise your hood and spray some fluid down into the throttle body and if it starts and then dies it is most likely your fuel pump, hope this helps.
wait till motor cool take off radiator cap start and let warm up add h2o until you are sure its full. I hope you replaced the antifreeze,it prevents heating up and lubes the h2o pump. you probally left air in the system do this with the heater on full hot
I would contact the BBB about the AAA shop. They were taking advantage of you not to mention they did not warranty there work. Plus if they changed the pump they were the ones that left the clamp loose. In the future you should just take it to the shop you know and trust even if it cost you a little to have it towed there, it will be less than getting taken advantage of. It hard to find a good honest shop and it sounds like you have one so give them the business they deserve it.
If it ran normally before changing fuel pump, you probably have a bad aftermarket pump out-of-the-box. Try "thepartsladi" store on eBay for low price OEM.
Have you chg. fuel filter? If so, best to do a fuel pressure test, sometimes( not always) when the pump gets warmed up they can loose a little pressure and thats all it takes just a few # under recamended p.s.i and the truck quits running, you may hear the pump run but its not putting out the correct pressure until it cools down and it starts working again, but after a while quit all together.
Unfortunately most likely your fuel pump is going out. Tahoes are notorious for the fuel pumps going bad. One word of advice spend the extra money on a GM fuel pump and don't go with aftermarket because the labor is quite expensive and if the new pump goes out in six months you are out all the labor again.
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