Loss of power

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Xhuxh89

Junior Member
Joined
May 14, 2017
Posts
3
Reaction score
1
Ram Year
2004
Engine
5.7 Hemi
I have an 04 1500 5.7 hemi it has 304,567 miles on it, and has recently started to have a loss of power when driveing, it drives great but when I get to about 30mph I lose all power wont shift, and acts like no fuel, but if i let off pedal it will sometimes shift, then when makes it to next shift point same thing happens. I have no check engine light on, but i hooked a diagnostics comp to it took it for a drive, when it loses its power I have no voltage at my O2 sensors.
Any help on where i should start would be helpful it is getting worse so I don't wanna drive it and break something major.
 

bhonshell37

Senior Member
Joined
Dec 15, 2016
Posts
892
Reaction score
276
Location
Washington
Ram Year
2017
Engine
hemi 5.7
I have the same year. Way less miles. I would start by replacing the bad o2 sensor. When did you change the spark plugs?

Sent from my SM-G955U using Tapatalk
 
OP
OP
X

Xhuxh89

Junior Member
Joined
May 14, 2017
Posts
3
Reaction score
1
Ram Year
2004
Engine
5.7 Hemi
I haven't since I bought it, I got it at 256k, and got no service work for it previously
 

bhonshell37

Senior Member
Joined
Dec 15, 2016
Posts
892
Reaction score
276
Location
Washington
Ram Year
2017
Engine
hemi 5.7
For our hemis, the plugs need to be changed at 30000 miles with eom Champion copper plugs. Keep me posted on your repairs

Sent from my SM-G955U using Tapatalk
 
OP
OP
X

Xhuxh89

Junior Member
Joined
May 14, 2017
Posts
3
Reaction score
1
Ram Year
2004
Engine
5.7 Hemi
Will do thanks, I'll try to get sensors and plugs tomorrow, so you recommend specific brand for o2 sensors?
 

bhonshell37

Senior Member
Joined
Dec 15, 2016
Posts
892
Reaction score
276
Location
Washington
Ram Year
2017
Engine
hemi 5.7
No specific brand. One with a warranty if possible

Sent from my SM-G955U using Tapatalk
 

BigBlue05

Senior Member
Joined
Aug 23, 2014
Posts
291
Reaction score
42
Location
Eads, Tennessee
Ram Year
2005
Engine
5.7 HEMI
Could be an extremely dirty air filter playing a part in it. Two things you have to have is fuel and air. And i would be careful with cheap 02 sensors from AutoZone or the like. I bought 2 02 sensors for my jeep a while back and they still threw codes after wards. Tried taking them back and was told no returns on electrical parts.
 
Top