2004 RAM HEMI 5.7 p0171 p0174
#21
The truck runs just fine, no rough, no stalling...
The only number that I was able to understand was vehicle speed 3mph and 1600 rpms
Last edited by djromann; 01-02-2020 at 09:32 AM.
#22
Here's another update-
Since yesterday I couldn't find my meter I was using the voltage info from the SBB box. Today I checked the voltage straight on the battery, with the car off it was 12-12.3V and with engine running 14.4-14.6V, revving would go to 14.8-14.9V. So I assume the battery is good even if it's a Walmart battery with the sticker saying mfg date 12/18.
When I plugged the scanner this morning it was showing green light, no pending codes. Two restarts later check engine codes and light.
Here are the pics of live data
Gone to read what those numbers mean...
Since yesterday I couldn't find my meter I was using the voltage info from the SBB box. Today I checked the voltage straight on the battery, with the car off it was 12-12.3V and with engine running 14.4-14.6V, revving would go to 14.8-14.9V. So I assume the battery is good even if it's a Walmart battery with the sticker saying mfg date 12/18.
When I plugged the scanner this morning it was showing green light, no pending codes. Two restarts later check engine codes and light.
Here are the pics of live data
Gone to read what those numbers mean...
#23
#24
Tried two more times, the numbers are pretty much the same. On revving to 2000 RPMs the long fuel trim goes down to 27-28 from 32. This is the latest, on idle, hot engine after about 10 miles drive home. I also have another advanced code reader but wouldn't connect to engine or PCM, only transmission, AC, ABS, airbags.
I ordered the upstream O2 sensors, does it make sense to order the downstream as well? Or better to check connections from downstream O2 sensors plugs to the PCM?
Got the Fel Pro exhaust manifold gasket, will take care of broken exhaust studs this weekend. Doesn't sound hissing on cold, but maybe there's a leak given broken studs...
I ordered the upstream O2 sensors, does it make sense to order the downstream as well? Or better to check connections from downstream O2 sensors plugs to the PCM?
Got the Fel Pro exhaust manifold gasket, will take care of broken exhaust studs this weekend. Doesn't sound hissing on cold, but maybe there's a leak given broken studs...
#26
#27
The old sensors are NGK/ NTK so I've got NTK from Amazon, $45 for both upstream, O'Reilly guys were selling me Bosch for $36 each claiming that's the right part. Cross checked the part numbers on rockauto. Had some bad experience with chinese brands before on other Dodges of mine, they not only don't work, but trigger up to ten additional codes.
By the way, the mpg is about 9-10 on city cicle, is that allright? My coworker's got a 2003 RAM HEMI and he says that's normal
By the way, the mpg is about 9-10 on city cicle, is that allright? My coworker's got a 2003 RAM HEMI and he says that's normal
Last edited by djromann; 01-03-2020 at 09:49 AM.
#28
#29
#30
Bah. I live in michigan.... though, today, winter doesn't seem to be all that much of an issue.
haynes manual is not really as helpful as you would like. Get a REAL factory service manual. I think they are published by Bishko? They ain't cheap, but, the information is accurate, and there is a LOT of it. Including accurate wiring diagrams, and troubleshooting steps.
haynes manual is not really as helpful as you would like. Get a REAL factory service manual. I think they are published by Bishko? They ain't cheap, but, the information is accurate, and there is a LOT of it. Including accurate wiring diagrams, and troubleshooting steps.
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djromann (01-03-2020)