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57 dodge sierra wagon with engine and trans from 97 ram.
#2132804
08/14/16 06:17 PM
08/14/16 06:17 PM
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Joined: Feb 2007
Posts: 680 NW IL
Biggie
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mopar
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mopar
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NW IL
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Not sure where to put this so i will start here. I have a motor and trans out of a 97 sst ram. It is still fuel injected. I have developed a miss but only after it shifts into overdrive. It will miss when i lighty ste on the gas. If i put my foot into it it runs fine. I have replaced plugs, wires, throttle position sensor, fuel injectors. Only codes i get are miss fire in almost every cylinder and battery temp sensor which isnt hooked up. I have an aermotive regulator that is set for 51 psi at idle and holds steady as i increase throttle. What am i missing?
Last edited by Biggie; 08/23/16 11:40 PM.
"Think of all the Ford owners who will someday want an automobile." John Dodge
57 dodge sierra wagon 03 chrysler 300m 10 dodge charger
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Re: 57 dodge sierra wagon
[Re: Biggie]
#2132838
08/14/16 07:20 PM
08/14/16 07:20 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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About to go away
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Posts: 14,889
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If you have a misfire in almost all cylinders then it's something in common.
the injectors all use a common 12V to them and the computer switches the ground on the fuel side. I believe those engines had a plenum leak issue that might be something to look at too.
On the ignition side there is a lot more in common electrically.
I would look in those areas first. Cap, rotor, coil, etc.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: 57 dodge sierra wagon
[Re: Biggie]
#2132865
08/14/16 07:52 PM
08/14/16 07:52 PM
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Joined: Feb 2007
Posts: 680 NW IL
Biggie
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mopar
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mopar
Joined: Feb 2007
Posts: 680
NW IL
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Plenum was fixed before we dropped motor in which was about 700 miles ago. I guess i will look at it again. Same with coil. I will rplace cap and rotor just to rule it out. I have a round 10" air clraner on it. Could the engine not be getting enough cold air?
"Think of all the Ford owners who will someday want an automobile." John Dodge
57 dodge sierra wagon 03 chrysler 300m 10 dodge charger
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Re: 57 dodge sierra wagon
[Re: Biggie]
#2132961
08/14/16 09:36 PM
08/14/16 09:36 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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unless the filter is only 1/2" tall or packed full of dirt I doubt that is the problem.
Rereading the problem it looks like it's a high load, minimal throttle situation where it occurs, I'm sorta thinking vacuum leak somewhere. WOT is usually rich anyway, so a vacuum leak doesn't show up as easily then. Generally, I'm thinking the ignition would not be that picky.
Have you done any vacuum leak tests?
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: 57 dodge sierra wagon
[Re: Biggie]
#2133078
08/14/16 11:10 PM
08/14/16 11:10 PM
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Joined: Feb 2007
Posts: 680 NW IL
Biggie
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mopar
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OP
mopar
Joined: Feb 2007
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NW IL
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Filter is like two inches tall. Never thought of vacuum. I replaced one i had to fuel regulator. Brake booster was fine but i will definitely test it. We never thought of that. Thanks!
"Think of all the Ford owners who will someday want an automobile." John Dodge
57 dodge sierra wagon 03 chrysler 300m 10 dodge charger
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Re: 57 dodge sierra wagon
[Re: Biggie]
#2134626
08/16/16 08:32 PM
08/16/16 08:32 PM
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Joined: Feb 2007
Posts: 680 NW IL
Biggie
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mopar
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OP
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Joined: Feb 2007
Posts: 680
NW IL
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According to vacuum gauge im holding steady at just over 16 at idle. I sprayed carb cleaner at every hose end and no difference in idle. On the right side of engine i have fuel regulator and pcv valve and on left side i have brake booster and the other is plugged. Front is plugged too. Plenum looked great.
"Think of all the Ford owners who will someday want an automobile." John Dodge
57 dodge sierra wagon 03 chrysler 300m 10 dodge charger
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Re: 57 dodge sierra wagon
[Re: Biggie]
#2135137
08/17/16 02:43 PM
08/17/16 02:43 PM
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Joined: Jan 2003
Posts: 25,995 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,995
Rio Linda, CA
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Got a couple of pics for a fellow '57 Sierra owner?
The INTERNET, the MISinformation superhighway
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Re: 57 dodge sierra wagon
[Re: Biggie]
#2135481
08/17/16 11:09 PM
08/17/16 11:09 PM
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Joined: Feb 2007
Posts: 680 NW IL
Biggie
OP
mopar
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OP
mopar
Joined: Feb 2007
Posts: 680
NW IL
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Not sure how from my phone
"Think of all the Ford owners who will someday want an automobile." John Dodge
57 dodge sierra wagon 03 chrysler 300m 10 dodge charger
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Re: 57 dodge sierra wagon
[Re: Biggie]
#2139616
08/23/16 11:13 PM
08/23/16 11:13 PM
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Joined: Feb 2007
Posts: 680 NW IL
Biggie
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mopar
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OP
mopar
Joined: Feb 2007
Posts: 680
NW IL
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Hey mods can this be moved to truck section?
"Think of all the Ford owners who will someday want an automobile." John Dodge
57 dodge sierra wagon 03 chrysler 300m 10 dodge charger
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