Mystery low power issue after 2011-2013 Hemi swap
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Mystery low power issue after 2011-2013 Hemi swap
Hey there,
Looking for some good advice that might help me figure out the issue I'm having after swapping a 2013 Hemi into my 2011.
To make a long story short I bought a ram with a misfire, it was about 1400 kilometers from my house and I thought it was a good buy.
The owner told me there was a misfire code but it ran good, in any event I expected i would need to replace the engine. Once I arrived, flashing engine light and couldn't have been running on more that 5 cylinders.
Stupid me I drove it home shaking and shuddering like a motherXXXXr and made it back, I was sure I destroyed the cats as it was backfiring the entire way back and I wasnt getting more than 240 kilometrs on a tank. Not joking! I know I should have shipped it.
Ok so once I arrived home I knew the cam was toast and found an engine out of a smashed 2013 Ram with 67,000K
I took it to a mechanic(I didn't know) because he promised to get it done asap.
So 1 month later he finally finished it, when i arrived it sounded good! The mechanic explained to me that it wouldn't start so he swapped crank sensors from the 2011-2013 as well as the throttle body. He said the clip on the 2013 wouldn't fit my 2011 harness.
Once I drove off i can see it was weak, sounded like it was choking and even on wide open throttle just weak. Rpm doesn't rise fast and sounds a bit like screaming into a pillow, muffled a bit. I runs nice and smooth nevertheless and good at very low rpm. Not sure if it has a governor but while in park at full throttle it stays just under 4,000 rpm's. Even when it kicks down it seems like perhaps its not running on all 8 and perhaps for split second full power will kick in then retard instantly. I have a blue driver and saw no codes, so I assumed I got lucky with the cats despite the 1400 kilometers of misfiring and sputtering. I took it to another mechanic and said the gas pedal needed to be re calibrated and that caused the throttle to way off. Sounded like a reasonable explanation so he fixed it and it was the same.
I was tired of wasting money, got a heat gun and saw a cooler temp coming out the cats, about 310C in and 270C after the cats. Ok so I thought finally, makes sense. I went out, purchased a new Y pipe and transferred the 02's and although it sounded a bit better(older ones were ticking at the connection after engine replaced) Still slow and no codes!!
Does anyone know if swapping the crank sensor or throttle body might cause this?
I can look at some live modules on my Bluedriver but i'm not familiar at what I might be looking for. I did notice bank 2 sensor 1 was up/down and bank 2 sensor 2 up and down unlike bank 1 sensor 1 up/down and bank 1 sensor 2 steady.
I saw an 86% on wide open throttle??
I really appreciate any help, not sure what direction to go at this point.
Thanks
Looking for some good advice that might help me figure out the issue I'm having after swapping a 2013 Hemi into my 2011.
To make a long story short I bought a ram with a misfire, it was about 1400 kilometers from my house and I thought it was a good buy.
The owner told me there was a misfire code but it ran good, in any event I expected i would need to replace the engine. Once I arrived, flashing engine light and couldn't have been running on more that 5 cylinders.
Stupid me I drove it home shaking and shuddering like a motherXXXXr and made it back, I was sure I destroyed the cats as it was backfiring the entire way back and I wasnt getting more than 240 kilometrs on a tank. Not joking! I know I should have shipped it.
Ok so once I arrived home I knew the cam was toast and found an engine out of a smashed 2013 Ram with 67,000K
I took it to a mechanic(I didn't know) because he promised to get it done asap.
So 1 month later he finally finished it, when i arrived it sounded good! The mechanic explained to me that it wouldn't start so he swapped crank sensors from the 2011-2013 as well as the throttle body. He said the clip on the 2013 wouldn't fit my 2011 harness.
Once I drove off i can see it was weak, sounded like it was choking and even on wide open throttle just weak. Rpm doesn't rise fast and sounds a bit like screaming into a pillow, muffled a bit. I runs nice and smooth nevertheless and good at very low rpm. Not sure if it has a governor but while in park at full throttle it stays just under 4,000 rpm's. Even when it kicks down it seems like perhaps its not running on all 8 and perhaps for split second full power will kick in then retard instantly. I have a blue driver and saw no codes, so I assumed I got lucky with the cats despite the 1400 kilometers of misfiring and sputtering. I took it to another mechanic and said the gas pedal needed to be re calibrated and that caused the throttle to way off. Sounded like a reasonable explanation so he fixed it and it was the same.
I was tired of wasting money, got a heat gun and saw a cooler temp coming out the cats, about 310C in and 270C after the cats. Ok so I thought finally, makes sense. I went out, purchased a new Y pipe and transferred the 02's and although it sounded a bit better(older ones were ticking at the connection after engine replaced) Still slow and no codes!!
Does anyone know if swapping the crank sensor or throttle body might cause this?
I can look at some live modules on my Bluedriver but i'm not familiar at what I might be looking for. I did notice bank 2 sensor 1 was up/down and bank 2 sensor 2 up and down unlike bank 1 sensor 1 up/down and bank 1 sensor 2 steady.
I saw an 86% on wide open throttle??
I really appreciate any help, not sure what direction to go at this point.
Thanks
Last edited by Ronin12; Jul 3, 2019 at 09:17 PM.