what would cause a O2 sensor say its not getting enough gas on a 1999 dodge ram 1500

160

Asked by Aug 24, 2014 at 10:17 AM about the 1999 Dodge Ram 1500 2 Dr Laramie SLT 4WD Extended Cab LB

Question type: Maintenance & Repair

the truck is sputtering at times & its blowing black out the tailpipe (which i understand it is
burning oil).  it started not wanting to start.

9 Answers

38,175

The O2 sensor is played out. Do your self a favor. Replace all of them at the same time.

4 people found this helpful.
75,095

Agree with boholmark,all so if it is burning oil,may not hurt to change your plug,s and add some oil fouler,s to help prevent plug,s from fouling out from the oil.

1 people found this helpful.

Black smoke is unburnt hydrocarbons GAS --white or white/blue tint is oil ..it's running very rich, the 02 sensor is not sending the correct data to the ECU to set fuel/air trim ...a 14 year old sensor may be simply worn out

1 people found this helpful.
160

how many O2 sensors are there on this truck? where are they located?

16 people found this helpful.

Good morning Gentlemen

1 people found this helpful.
115,765

Yep replace the O2 sensors, they are telling the ECM that the engine is too lean so the ECM is increasing the fuel mixture thus the black smoke, but the o2 sensor are so far gone that they don't see the mixture increase so the reading don't change. Got it?

1 people found this helpful.

http://www.cargurus.com/Cars/Discussion-t13693_ds606428#msg364966 ...............I just went through all that on a Dodge it only has two if you have the 5.2 one upstream and one downstream. It may also be stuck in open loop

3 people found this helpful.

I have a 02 dodge ram 1500 pickup, two wheel drive, 4.7 ltr. engine. The engine light is on and individual codes I got from the MVD this morning we're P0037,P0138, P1491, Can anybody help me? How many sensors are on this pickup?

115,765

Go to: http://www.engine-light-help.com/chrysler-check-engine- light.html There is also another page for the Generic codes listed on that page.

2 people found this helpful.

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