Doug D said:
What, if anything, have you done?
From the code you posted, I would replace the O2 sensor if you haven't done so already.
I'd also check all the vacum lines. They tend to crack and break from the heat of the engine as they age.
ImperialCrown said:
I would start with a fresh OEM O2 sensor and erase the codes to see what comes back.
It sounds very rich and why the fuel economy is so poor. The oil may smell like fuel as well and should be checked and changed, if needed.
The MAP/Baro code could be from poor vacuum. OEM Champion spark plugs should be used.
This book shows tests that can be done without the DRB dealer scan tool:
http://usherwoods.ecrater.com/p/17228398/1989-chrysler-powertrain-diagnostic-procedures-25l
I performed the following tests on the map sensor and barometric solenoid to see if they are failing. for this testing me I got a new map sensor and a barometric solenoid. on the results of these tests the word "old" indicating the party that has the car and the word "new" indicate the new part I got. before performing this test, were checked all vacuum hoses and electrical wiring also everything concerning the map sensor and baro solenoid, there were no failures or vacuum hoses, or electrical wiring. it is noted that the oxygen sensor remains the same test results are the following:
old map with old baro sensor solednoid 10 mpg
old map with new baro sensor solenoid 10 mpg
new map with new baro sensor solenoid 10 mpg
new map with old baro sensor solenoid 10 mpg
only old map sensor connected without baro solenoid: 10mpg
NEW map sensor connected only without baro solenoid 10 mpg
as you can see from the results, the consumption per gallon is still 10 miles. for more info my car is an indicator of Air / Fuel, when I start the car, and I'm running, the indicator light marked "optimal" in the mix, going like 5 minutes, the air / fuel is wasting little by little until the LED brand rohe section performed the following tests on the map sensor and barometric solenoid to see if they are failing. for this testing me I got a new map sensor and a barometric solenoid. on the results of these tests the word "old" indicating the party that has the car and the word "new" indicate the new part I got. before performing this test, were checked all vacuum hoses and electrical wiring also everything concerning the map sensor and baro solenoid, there were no failures or vacuum hoses, or electrical wiring. should be noted that the oxygen sensor remains the same.
the test results are as follows:
old map with old baro sensor solednoid 10 mpg
old map with new baro sensor solenoid 10 mpg
new map with new baro sensor solenoid 10 mpg
new map with old baro sensor solenoid 10 mpg
only old map sensor connected without baro solenoid: 10mpg
NEW map sensor connected only without baro solenoid 10 mpg
as you can see from the results, the consumption per gallon is still 10 miles. for more info my car is an indicator of Air / Fuel, when I start the car, and I'm running, the indicator light marked "optimal" in the mix, as the car is running, the indicator of air / fuel goes down slightly by little until the LED brand red section, corresponding to lean. (About 5 minutes)
these tests can indicate that the map sensor and baro solenoid work well. but definitely the oxygen sensor is failing?. This test shows that the cause of the high fuel consumption is the oxygen sensor?
appreciate opinions ....
I performed the following tests on the map sensor and barometric solenoid to see if they are failing. for this testing me I got a new map sensor and a barometric solenoid. on the results of these tests the word "old" indicating the party that has the car and the word "new" indicate the new part I got. before performing this test, were checked all vacuum hoses and electrical wiring also everything concerning the map sensor and baro solenoid, there were no failures or vacuum hoses, or electrical wiring. it is noted that the oxygen sensor remains the same test results are the following:
old map with old baro sensor solednoid 10 mpg
old map with new baro sensor solenoid 10 mpg
new map with new baro sensor solenoid 10 mpg
new map with old baro sensor solenoid 10 mpg
only old map sensor connected without baro solenoid: 10mpg
NEW map sensor connected only without baro solenoid 10 mpg
as you can see from the results, the consumption per gallon is still 10 miles. for more info my car is an indicator of Air / Fuel, when I start the car, and I'm running, the indicator light marked "optimal" in the mix, going like 5 minutes, the air / fuel is wasting little by little until the LED brand rohe section performed the following tests on the map sensor and barometric solenoid to see if they are failing. for this testing me I got a new map sensor and a barometric solenoid. on the results of these tests the word "old" indicating the party that has the car and the word "new" indicate the new part I got. before performing this test, were checked all vacuum hoses and electrical wiring also everything concerning the map sensor and baro solenoid, there were no failures or vacuum hoses, or electrical wiring. should be noted that the oxygen sensor remains the same.
the test results are as follows:
old map with old baro sensor solednoid 10 mpg
old map with new baro sensor solenoid 10 mpg
new map with new baro sensor solenoid 10 mpg
new map with old baro sensor solenoid 10 mpg
only old map sensor connected without baro solenoid: 10mpg
NEW map sensor connected only without baro solenoid 10 mpg
as you can see from the results, the consumption per gallon is still 10 miles. for more info my car is an indicator of Air / Fuel, when I start the car, and I'm running, the indicator light marked "optimal" in the mix, as the car is running, the indicator of air / fuel goes down slightly by little until the LED brand red section, corresponding to lean. (About 5 minutes)
these tests can indicate that the map sensor and baro solenoid work well. but definitely the oxygen sensor is failing?. This test shows that the cause of the high fuel consumption is the oxygen sensor?
appreciate opinions ....