Need Help with Scan Codes for 1999 Chevy S10
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Need Help with Scan Codes for 1999 Chevy S10
I have a 1999 Chevy S10 that is running rough, power loss, smell gas bad while driving, and back firing when letting off gas going down hill.
I just hooked a code scanner to the truck and here are the codes:
P0300, P0420, P0452, P0453.
History, I put a new fuel pump in last year, so I don't think it's the fuel pump. Truck has 102,000 miles on it.
Before it started acting up, I just filled up the truck FULL of gas, to the point it was coming out of the neck (gas was on sale). I drove 23 miles with the full tank when the truck started jerking, missing, loss of power and smelling gas out the tailpipe, acts like it's flooding.
I looked up the codes, one sight said loose gas cap. The gas cap seal has some cracks, but I can't imagine the gas cap is causing this. I put a layer of grease on the gas cap seal, screwed it on tight and still the same problem. I did this just to test tonight. Not the correct way I know.
Any ideas what the problem is?
One sight said O2 sensors, Fuel Pressure Sensor, Throttle Position Sensor, Catalic Converter clogged, and Mass Air Flow Sensor. I hate to change All these when only one is probably the problem.
I just hooked a code scanner to the truck and here are the codes:
P0300, P0420, P0452, P0453.
History, I put a new fuel pump in last year, so I don't think it's the fuel pump. Truck has 102,000 miles on it.
Before it started acting up, I just filled up the truck FULL of gas, to the point it was coming out of the neck (gas was on sale). I drove 23 miles with the full tank when the truck started jerking, missing, loss of power and smelling gas out the tailpipe, acts like it's flooding.
I looked up the codes, one sight said loose gas cap. The gas cap seal has some cracks, but I can't imagine the gas cap is causing this. I put a layer of grease on the gas cap seal, screwed it on tight and still the same problem. I did this just to test tonight. Not the correct way I know.
Any ideas what the problem is?
One sight said O2 sensors, Fuel Pressure Sensor, Throttle Position Sensor, Catalic Converter clogged, and Mass Air Flow Sensor. I hate to change All these when only one is probably the problem.
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Joined: Jul 2014
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Any luck finding out the problem(s)? I have a 98 Blazer with similar problems. Random misfire / "stumble" (camshaft sensor fault 41 not showing), not always but occasionally and poor fuel efficiency, we have smelled gas before but haven't noticed it recently.
Your P0452 + P0453 sounds like a bad sensor EVAP fuel tank pressure sensor low + high pressure input.
Or with a "FULL" tank pressure was high during a warm / hot day and with cracks in the gasket it not sealing good and either 1 or both just not cleared from history. Try clearing by disconnecting battery for 30 seconds and recheck.
Your P0452 + P0453 sounds like a bad sensor EVAP fuel tank pressure sensor low + high pressure input.
Or with a "FULL" tank pressure was high during a warm / hot day and with cracks in the gasket it not sealing good and either 1 or both just not cleared from history. Try clearing by disconnecting battery for 30 seconds and recheck.
Thread Starter
CF Beginner
Joined: Jul 2014
Posts: 5
Likes: 0
Any luck finding out the problem(s)? I have a 98 Blazer with similar problems. Random misfire / "stumble" (camshaft sensor fault 41 not showing), not always but occasionally and poor fuel efficiency, we have smelled gas before but haven't noticed it recently.
Your P0452 + P0453 sounds like a bad sensor EVAP fuel tank pressure sensor low + high pressure input.
Or with a "FULL" tank pressure was high during a warm / hot day and with cracks in the gasket it not sealing good and either 1 or both just not cleared from history. Try clearing by disconnecting battery for 30 seconds and recheck.
Your P0452 + P0453 sounds like a bad sensor EVAP fuel tank pressure sensor low + high pressure input.
Or with a "FULL" tank pressure was high during a warm / hot day and with cracks in the gasket it not sealing good and either 1 or both just not cleared from history. Try clearing by disconnecting battery for 30 seconds and recheck.
I HOPE this is all that's wrong with the truck. I am usually not that lucky.
Thread Starter
CF Beginner
Joined: Jul 2014
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Still flooding out, loss of power and smell gas bad while running. Service Engine light keeps flashing at me....
Thought maybe coil packs, but I put new ones on it last fall.
Need Help.
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