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BrianSw -> 97 Blazer Loss of power (engine) after warmed up (11/30/2007 9:26:42 PM)
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Hi, New here for a reason because I gave up with the Chevy Dealer service center. They can't pin point the problem I having and just want to start popping in parts with no gurantee that it would even fix the problem.
Here's a short history of what happened. My blazer had really bad problems starting I had to spray starter fluid into the throttle body to get it started. Then it would run fine. Only had to do that when starting it. Eventually the engine would not start at all. So, I went to work on it.
I checked fuel pressure and it was really low. I replaced my Fuel Pump. This was my second fuel pump replaced within a one year period. Fuel Filter was replace at the same time.
I decided I might as well replace my Fuel pressure regulator because I already knew I had problems with the one I had. I could not maintain pressure after turning off the engine. The pressure would drop to zero really fast.
Spark plugs, Distributer rotor and cap, TPS sensor, ignition switch, battery, and alternator were also replaced recently.
The vehicle ran like a champ afterwards. Started on the first turn of the key. WooHoo!
But that didn't last long. After driving the vehicle for about 30 minutes on the highway I would start losing power. I'd be driving at 65 then all of a sudden my RPM's start falling, Engine speed is dropping by itself. I try give it more gas but that would make it worse. Eventually I could only get to about 10 mph speed. And if I floored the pedal it would almost stall out.
I pulled over to the side of the road and turned the engine off. Let it sit for about 2 minutes and started it back up again. Now if was good again. I could get back up to 65 mph and drive normally again. It was doing this every day during the hot summer weather. As the temperature outside started dropping (Fall season) the problem went away. Things were good for a few weeks.
Now it's really cold outside and the problem came back again only really bad this time. I can start the car fine. It will run good for acouple minutes. I can get up to 55 mph then I start losing power again. Can't even get it to go up a small hill in the road. I pull over off the road and let it sit for a few minutes then restart it. I can drive for about another minute or two and start to lose power again. I was able to get it to a near by dealership they had it for a week already. I told them everything I replaced. They supected leaky fuel injectors. I asked them if they can test them and find out which one was leaky. They couldn't because they didn't want to spend the man hours taking them apart incase they were good. They wanted me to take the car back and test them myself. So, I was ready to just go and get the car and try and get it home. Already the have billed me $300 in labor for nothing. Well when I went to pick it up they wanted to keep it for another day because supected that maybe it wasn't bad fuel injectors and said it could be the VCM Module. I asked it were sure thats what the problem was. They said no not really and might not fix the problem at all. But they wanted to put one in at my cost anyways (another $500) no gurantee it would solve he problem. Well I told them no, and I'm going to pick up the car tomorrow.
So, now I'm out $300 and still have the loss of power problem. Thought maybe someone here might have some clue as to what might be causing this. The dealer said the car runs good until it gets warm then runs really bad. I believe the said to was throwing a whole bunch of codes.
Also I did notice that when this power loss problem had gotten really bad my "Service Engine Soon" Light flashes. I've never seen it flash before. They (the dealership) said that was a sign of a really bad problem.
Sorry if I went overboard here with all this but thought it would give some idea of what went on with this vehicle. Any advice or suggestions would certainly be appreciated.
Thanks,
Brian
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