Skip the auto shop - Our mechanics make house calls

Q: Dodge Charger will not run after engine swap

asked by on

My 2006 Dodge Charger R/T was swapped from a 5.7L to a 3.5L v6. The car would not run so the mechanic swapped the transmission to fit the 3.5L. He also swapped the throttle body, wire harness, control module, and the starter. The computer was not working so it got swapped and reprogrammed. The car still won't run. Any suggestions?

My car has 10000 miles.
My car has an automatic transmission.

A: Hi, thanks for writing in. If the 3.5l V6 &...

Hi, thanks for writing in. If the 3.5l V6 "donor" engine/transmission was verified as running before the swap, make sure EVERYTHING from that running combination is installed and configured as it was previously in the running vehicle - components, wiring, software levels in the engine/transmission controllers, etc. Any variation from that configuration means an unknown configuration and problems - as you have experienced.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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: I plan on putting a 6g74 from a Diamante

Hey there. The 6G74 is a direct drop in as long as the donor vehicle is the right one. That engine was used in a few models with some being FWD and others AWD, and there will be very subtle...

Q: Loud roaring sound from engine when accelerating

It sounds like you have an exhaust leak. An exhaust leak can cause a Check Engine Light. It will give the O2 sensors a false reading. The exhaust runs nearly the length of the car and consists of two catalytic...

Q: Can i cut the cat off a run straight pipe without any problems

It is not legal to do so unless your vehicle is for off-road use only. There should not be any issues with back pressure. Here's a little tip, if you put in a small glass pack, or a similar muffler,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...