
Dodge Ram 5. 9 Gas: No Power, Engine Bogs Down
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Date: 2020-08-05
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Comments and reviews: 10
GNX157
Although this one was a clogged converter, I worked on many of the 5. 9 like this in the Ram vans and they also had a problem of fuel pumps going bad but not failing totally, just the output would go down gradually over time. It feels like a cat starting to clog. My seat of the pants told me the engine was starving for fuel though and proved it by mounting a fuel pressure gauge on a hose to a fuel connection under the hood and watch the gauge held under the wiper arm. I could see under heavy throttle in 2nd and 3rd that the fuel pres would drop lower and lower in relation with the engine bogging down. The engine just felt like it was 'laying down', short on power compared to what it had before, and what the other good vans in the fleet had. Thankfully the vans were still driveable and I had the users run the tanks down because on these extended vans the tanks were like 30 gals. Not fun draining to reach the fuel pump.
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Although this one was a clogged converter, I worked on many of the 5. 9 like this in the Ram vans and they also had a problem of fuel pumps going bad but not failing totally, just the output would go down gradually over time. It feels like a cat starting to clog. My seat of the pants told me the engine was starving for fuel though and proved it by mounting a fuel pressure gauge on a hose to a fuel connection under the hood and watch the gauge held under the wiper arm. I could see under heavy throttle in 2nd and 3rd that the fuel pres would drop lower and lower in relation with the engine bogging down. The engine just felt like it was 'laying down', short on power compared to what it had before, and what the other good vans in the fleet had. Thankfully the vans were still driveable and I had the users run the tanks down because on these extended vans the tanks were like 30 gals. Not fun draining to reach the fuel pump.
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Christopher
Mr O
You commented that it was recognized that a defective intake belley pan gasket contributed to the cat breaking down
My cat plugged about 7 years ago
Since I wasn't in an emission state
Sawsall and cat delete pipe
Truck has 150k now
Runs fine such as a 150k truck can run
But my question is
Is it probable that my gasket has been defective for longer than I realize?
And do you have a video on that replacement?
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Mr O
You commented that it was recognized that a defective intake belley pan gasket contributed to the cat breaking down
My cat plugged about 7 years ago
Since I wasn't in an emission state
Sawsall and cat delete pipe
Truck has 150k now
Runs fine such as a 150k truck can run
But my question is
Is it probable that my gasket has been defective for longer than I realize?
And do you have a video on that replacement?
reply
The
Hey South Main, quick question. My truck is having a rather strange problem. It stalls and dies completely while I'm driving, and the fuel system relay gets so hot to the point where it deforms the relay and also melts the location around the pins. I was thinking crank position sensor or fuel pump, but I could be wrong. It seems to be a short in the system somewhere, it's my only vehicle and I desperately need your help! Thank you,
The Joker.
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Hey South Main, quick question. My truck is having a rather strange problem. It stalls and dies completely while I'm driving, and the fuel system relay gets so hot to the point where it deforms the relay and also melts the location around the pins. I was thinking crank position sensor or fuel pump, but I could be wrong. It seems to be a short in the system somewhere, it's my only vehicle and I desperately need your help! Thank you,
The Joker.
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travis
South Main Auto Repair LLC
so glad i watched this video i was gonna change my transmission i heard a pop and my truck runs and sounds like shit well sounds like this dodge really and yes i have the same truck same engine and all i think burning oil like it does at about 3 quarts for a 100 mile trip did the cat in thanks man i think this video just saved me thousands
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South Main Auto Repair LLC
so glad i watched this video i was gonna change my transmission i heard a pop and my truck runs and sounds like shit well sounds like this dodge really and yes i have the same truck same engine and all i think burning oil like it does at about 3 quarts for a 100 mile trip did the cat in thanks man i think this video just saved me thousands
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Digging
Usually like your vids but you explained nothing. When you hooked up the 02 sensors, what were you looking for exactly? And what is the typical pressure supposed to be? All I know from the video is that 3 or 4 pounds is pretty blocked, and something about 15 pounds being too much. What is a good pressure reading? Just not a whole lot in the way of explanation.
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Usually like your vids but you explained nothing. When you hooked up the 02 sensors, what were you looking for exactly? And what is the typical pressure supposed to be? All I know from the video is that 3 or 4 pounds is pretty blocked, and something about 15 pounds being too much. What is a good pressure reading? Just not a whole lot in the way of explanation.
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Jake
I had 3 Dodge Rams first one had V=10, spent so much time at dealers for repairs. They dented the tail gate then tried to hide it. Next Ram right at 508 miles after filling up the tank, engine let go. After a month of time dealer to decide what to do called to pick out another truck. That truck ended up with all bolts in front end loose. Back to Chevy!
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I had 3 Dodge Rams first one had V=10, spent so much time at dealers for repairs. They dented the tail gate then tried to hide it. Next Ram right at 508 miles after filling up the tank, engine let go. After a month of time dealer to decide what to do called to pick out another truck. That truck ended up with all bolts in front end loose. Back to Chevy!
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ramdodgetruck
I have the same truck and ashtray. On my second motor and transmission but still use it for my work truck. replaced lots of parts over the years but it doesn't owe me a thing. Has original cat. Bought a new F-250 and it came with a bad front end, had to be replaced. Speaker in Pass door unplugged, pin holes in trailer hitch didn't line up.
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I have the same truck and ashtray. On my second motor and transmission but still use it for my work truck. replaced lots of parts over the years but it doesn't owe me a thing. Has original cat. Bought a new F-250 and it came with a bad front end, had to be replaced. Speaker in Pass door unplugged, pin holes in trailer hitch didn't line up.
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strattuner
loose timing chains, plugged converters, too hot plugs can also increase the temps the exhaust valves run at, which invariably will crack heads, manifolds, valves with disastrous results, at highway speed, there wont be enough left of the engine for parts, good job eric o, superwrench
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loose timing chains, plugged converters, too hot plugs can also increase the temps the exhaust valves run at, which invariably will crack heads, manifolds, valves with disastrous results, at highway speed, there wont be enough left of the engine for parts, good job eric o, superwrench
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Clive
Hi Eric. I am not an auto engineer but your fault finding processes are brilliant.
You have some advanced test kit and what makes you different you seem to know how to use it.
You always finish with if I can do it so can you! Not true.
Thanks for great videos
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Hi Eric. I am not an auto engineer but your fault finding processes are brilliant.
You have some advanced test kit and what makes you different you seem to know how to use it.
You always finish with if I can do it so can you! Not true.
Thanks for great videos
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James4wd
I did this on a customers Focus one time. They towed it in cause it would barely move. It had a P0420. I grabbed a drill and drilled a hole before the cat. Should have seen the look on there face when I drove it out of the bay 10 mins after towing it in.
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I did this on a customers Focus one time. They towed it in cause it would barely move. It had a P0420. I grabbed a drill and drilled a hole before the cat. Should have seen the look on there face when I drove it out of the bay 10 mins after towing it in.
reply
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