Chevrolet Impala: Crank No Start: Fuel Pump Diagnosis
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Date: 2020-08-05
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Comments and reviews: 10
Pete
I love your videos. Very great teacher and you have taught me a lot. I have an interesting problem. I have a 2005 Chevy Monte Carlo LT. 3. 8 non-SC. 165k miles. I just changed the fuel pump, as it had little to no pressure, intermittently starting the car. Now. new water pump (AC Delco, all new sensors (ICM, TPS, IAC, MAP, MAF, new fuel pressure regulator, and now the new fuel pump. My problem is, it builds a ton of pressure when I turn it to on (between 48-52psi. still intermittently starting but. I noticed when I turn the key off (after running or just in on, I have a fuel pressure bleed off very quickly. within 30 seconds it drops to almost zero. I have checked all the lines and the fuel filter was changed last year. I am beating my head against the wall on this. Normally, it should hold pressure for at least 10 minutes after shut off, correct? When it is running and I snap the throttle, pressure goes up a few psi. When she runs, she runs terrific. I pulled the vacuum line off the regulator and the vacuum is almost louder than the motor, so that shouldn't be an issue. PSI goes up to about 58-60psi when vacuum line is off. Any help or guidance is greatly appreciated.
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I love your videos. Very great teacher and you have taught me a lot. I have an interesting problem. I have a 2005 Chevy Monte Carlo LT. 3. 8 non-SC. 165k miles. I just changed the fuel pump, as it had little to no pressure, intermittently starting the car. Now. new water pump (AC Delco, all new sensors (ICM, TPS, IAC, MAP, MAF, new fuel pressure regulator, and now the new fuel pump. My problem is, it builds a ton of pressure when I turn it to on (between 48-52psi. still intermittently starting but. I noticed when I turn the key off (after running or just in on, I have a fuel pressure bleed off very quickly. within 30 seconds it drops to almost zero. I have checked all the lines and the fuel filter was changed last year. I am beating my head against the wall on this. Normally, it should hold pressure for at least 10 minutes after shut off, correct? When it is running and I snap the throttle, pressure goes up a few psi. When she runs, she runs terrific. I pulled the vacuum line off the regulator and the vacuum is almost louder than the motor, so that shouldn't be an issue. PSI goes up to about 58-60psi when vacuum line is off. Any help or guidance is greatly appreciated.
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throttle
reminds me of a 95 chevy truck, they was on highway it started running rough, they pull into gas station fill tank from 1/8th to over filled topped off and it didn't start to leave the pump. no amount of hammering on the tank helped, 4F weather with howling wind. tow truck it here and some sucker had to change it without a lift using a single floor jack:
I cheated and use an electric pump and hose down filler, I had gas in everything I could find, 5 gallon buckets, 3 cans, large pots lol.
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reminds me of a 95 chevy truck, they was on highway it started running rough, they pull into gas station fill tank from 1/8th to over filled topped off and it didn't start to leave the pump. no amount of hammering on the tank helped, 4F weather with howling wind. tow truck it here and some sucker had to change it without a lift using a single floor jack:
I cheated and use an electric pump and hose down filler, I had gas in everything I could find, 5 gallon buckets, 3 cans, large pots lol.
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2009
I'm sure lot's of people know about lack of Fuel Pump access. Well I know about GM of course and my ford since they are mine and each one has needed a pump replacement. The G8 it has access to the pump now and so does the ford the tanks weren't full when it happened just between 3/4 and full enough. The other issue with the GM is the fact that the filter is in the tank with the pump no less I guess they are keeping each other company. As always Thank you the best video's around town
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I'm sure lot's of people know about lack of Fuel Pump access. Well I know about GM of course and my ford since they are mine and each one has needed a pump replacement. The G8 it has access to the pump now and so does the ford the tanks weren't full when it happened just between 3/4 and full enough. The other issue with the GM is the fact that the filter is in the tank with the pump no less I guess they are keeping each other company. As always Thank you the best video's around town
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rob27926
Just bought my uncle's 98 S10 that's been sitting in the garage for 12 years and the fuel pump was one of the first things I had to replace. He was nice enough to top off the gas tank right before he parked it. Had no way to siphon the old gas out due to the roll over valve in tank. And I don't have a lift so we had to drop the tank in the yard using Jack's, fun times. If anyone needs to strip any furniture I have 15 gallons of varnished fuel you can have
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Just bought my uncle's 98 S10 that's been sitting in the garage for 12 years and the fuel pump was one of the first things I had to replace. He was nice enough to top off the gas tank right before he parked it. Had no way to siphon the old gas out due to the roll over valve in tank. And I don't have a lift so we had to drop the tank in the yard using Jack's, fun times. If anyone needs to strip any furniture I have 15 gallons of varnished fuel you can have
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Talon
Story about a torch and a tank. I was 15 my grandfather owned a salvage yard. He had sent the new man up on the hill to start cutting the rear clip off a 1966 Plymouth fury when I topped the hill I seen smoke. New guy had used the torch to cut the tank straps off when the tank fell down the torch caught the grass on fire then the gas from the tank, then the whole car went up in flames. He didn't last but a few days.
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Story about a torch and a tank. I was 15 my grandfather owned a salvage yard. He had sent the new man up on the hill to start cutting the rear clip off a 1966 Plymouth fury when I topped the hill I seen smoke. New guy had used the torch to cut the tank straps off when the tank fell down the torch caught the grass on fire then the gas from the tank, then the whole car went up in flames. He didn't last but a few days.
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Dave
OMG! What would a video by Eric O. be without the air compressor coming on. Personally I like it cause it reminds me of those days gone by when there was such a thing as a Full service filling station, and the Lady! there's you're problem, had a low tire. She's trying to explain what's going on and the compressor kicks on. Lovely. what's the problem ma'am?
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OMG! What would a video by Eric O. be without the air compressor coming on. Personally I like it cause it reminds me of those days gone by when there was such a thing as a Full service filling station, and the Lady! there's you're problem, had a low tire. She's trying to explain what's going on and the compressor kicks on. Lovely. what's the problem ma'am?
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Craig
Maybe the most important that screen in the filler pipe does is to prevent flame from entering the tank. I came across this on boat motors where there is a screen in the carburetor intake that prevents flame from crossing it. It works. For some strange reason flame will not go thru that screen.
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Maybe the most important that screen in the filler pipe does is to prevent flame from entering the tank. I came across this on boat motors where there is a screen in the carburetor intake that prevents flame from crossing it. It works. For some strange reason flame will not go thru that screen.
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Jeremy
Fortunately I found my issue for my 2010 Impala when I went to remove the tank, there is a electrical plug for the pump above the exhaust, passenger side rear of the tank, a rodent chewed thru most of the wires, fixed the wires and it fired up, hope this info helps someone
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Fortunately I found my issue for my 2010 Impala when I went to remove the tank, there is a electrical plug for the pump above the exhaust, passenger side rear of the tank, a rodent chewed thru most of the wires, fixed the wires and it fired up, hope this info helps someone
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John
Eric O: Lightning diagnosis, gets correct parts, fixes it properly.
Me: Awful little Ebay pump floating in 20L lawnmower gas container in passenger foot well, seven foot of fuel line snaking under hole hacked in hood. vroooom! hahaha! Just kidding.
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Eric O: Lightning diagnosis, gets correct parts, fixes it properly.
Me: Awful little Ebay pump floating in 20L lawnmower gas container in passenger foot well, seven foot of fuel line snaking under hole hacked in hood. vroooom! hahaha! Just kidding.
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MaxDJs
I assume all the corrosion under all the cars you work on is the result of salt being put onto frozen roads? Seems like it destroys otherwise good vehicles: -(
I'm glad we don't need to do that down here in Melbourne Australia.
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I assume all the corrosion under all the cars you work on is the result of salt being put onto frozen roads? Seems like it destroys otherwise good vehicles: -(
I'm glad we don't need to do that down here in Melbourne Australia.
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