Q: stalls when braking/turning

asked by on

I have a 2003 Dodge Ram 1500 slt 4.7. I bought this truck not running and the only thing the previous owner said they replaced that I haven't checked is the fuel pump. I have replaced head gaskets,crank sensor,cam sensor,tps,iac,alternator,battery,cleaned the throttle body thoroughly,all new lifters,changed the old power steering pressure line to one that could hold a power steering pressure switch,ran half a bottle of seafoam direct into the fuel injectors and half in the tank because four were dirty,new spark plugs and coils all around, I've checked the wires under the fuse box to check for weak points also sprayed all the connectors with electronic cleaner to get out dirt.General problem that I am seeing at the moment is braking during a 90 degree turn stalls the truck.I have been able to come to a stop at stop sign and be fine, and I can make successful turns if I throttle through them, but like parking lots where I have to use the brake while turning the truck stalls.

My car has 140000 miles.
My car has an automatic transmission.

You have definitely thrown a lot of parts at the truck. Some may have been necessary, but some may not have been.

Based on your current symptoms, it sounds like the Manifold Absolute Pressure, or MAP sensor, may be to blame. When you are braking, you are using engine vacuum to assist your braking efforts via the power brake booster.

The MAP sensors function is to adjust fuel ratios and engine speed based on engine vacuum pressures. A faulty map sensor could allow the engines computer to incorrectly adjust itself based on the false reading it may be receiving from the MAP sensor.

I recommend having a qualified technician, such as one from YourMechanic, perform an inspection of your stalling issue to identify which sensor may be to blame. I suspect that you will need a MAP sensor replacement, but without being able to watch live engine data, it is hard for me to confirm.

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. stalls when braking/turning

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: Fuel gauge stopped working.

Hello. This is likely a sign of a faulty fuel sending unit. This is a unit inside the fuel tank that measures the fuel level inside the tank and relays this info to the ECU which then transmits this to...

Q: Can I transport passengers in the cargo area?

Passengers should never, under any circumstances, be in the cargo area of your car when the vehicle is in motion. The cargo area does not have sufficient safety features for passengers, and it is an illegal place for a passenger...

Q: How do I activate and deactivate the ParkSense rear park assist?

There are two different ways to activate and deactivate the ParkSense rear park assist. Use the rear park assist switch in your instrument cluster. Use the electronic vehicle information center (EVIC), and follow the directions. There are three...

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...
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.