Q: Q: engine codes

asked by on

i was going to see my girl and my check engine light starts flashing so i had to turn around and go to pepboys to get the light checked.

multiple cylinder misfires from 2 and 4 bad o2 sensor and p0740 which is the torque clutch converter and the problem was "no revolutions per min drop at lockup"

please tell me what to do and approximately how much things like this could run

My car has 267000 miles.
My car has an automatic transmission.

Hi Jonathan. Thanks for sending your question today. The code that is easier to identify is the P-0740 issue. What the P0740 code means is that the powertrain control module (PCM) has detected something unusual within the torque converter clutch circuit. The powertrain control module can vary the application of the torque converter clutch for optimal vehicle performance. If the torque converter clutch application is abnormal (usually multiple times) the powertrain control module will trigger a Check Engine Light. The problem is that this could indicate a faulty electrical connection or that the torque converter is wearing out. With your Ram being 1997, I would lean towards this being a torque converter issue, as they typically wear out prior to 20 years of service. The misfires and O2 sensor fault are likely related, so replacing the faulty sensor and electrical harness may resolve this problem. It might be best to have a professional mechanic come to your location and complete an onsite inspection to determine what repairs should be completed.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: engine codes

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Cherry red catalytic converter.

Hi there. Usually, oxygen sensors do not cause this problem, but if the oxygen sensor itself is causing the truck to run lean, then that could cause this issue. If the oxygen sensor is bad, the Check Engine light...

Q: Where is the camshaft position sensor locate on dodge charger 3.6l 2011

The camshaft position sensor is near the thermostat and radiator hose. You will see a small black plug with wires going into it. If you need additional help with replacing this, please contact our service department to schedule a repair....

Q: When engine is cold it studders and misses but when warm it runs juss fine no codes and engine light isnt on why is this happening

When an engine is cold it will need more fuel to run correctly. I would recommend having the fuel injection system cleaned to see if it helps to run better. If the flush does not work then a scan will...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.