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V8-4.7L

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My vehicle occasionally heats up and blows cold air out of the heater vents.
If you are getting the heater to work sometimes and other times not then it is due to the engine cooling system has air in it. You should have the cooling system purged of air and then retest system. As...
Question
Dodge ram misfires only when I do a cold start?
Hello, As you may know, there are a number of things that can cause a misfire ranging from faulty ignition parts to changes in air/fuel mixture, fuel pressure, timing an the list goes on. If you do know you have...
Question
Truck won't start.
Since the fuel pump was replaced, check to see if there is fuel pressure to the fuel injectors. If there is good fuel pressure, then check for spark on the spark plugs. You will have to put on a spark...
Question
Wondering if fuel injector(s) is/are going bad
Although faulty fuel injectors could cause the issue you are describing, the symptoms associated with the diagnostic trouble code you found, namely P0344 are consistent with the symptoms that you are reporting. Consequently, you are better off resolving the fault(s)...
Question
Loosing power while in cruise.
It sounds like you may have a faulty electronic throttle control unit. The electronic throttle unit opens and closes the throttle blade based upon input from various engine control sensors, including the accelerator pedal. This unit also controls, among other...
Question
I have a 2008 Dodge Ram 1500 Quad cab it will start when the engine is cold but when the engine is warm it won't start I have to w
Hi there. When you can't start a vehicle when it's hot, the most common sources are the fuel pump, spark plugs, cap + rotor, coil, fuel filter, starter, battery cable, or a wiring harness fault. Since so many different systems...
Question
Knocking in my motor
Unless the engine overheated, the head gasket would not necessarily be damaged by running low on oil. Ticking type noises are usually associated with wear in the valve train. In some cases, low oil pressure will be the cause of...
Question
Charging system failure.
Hi There, You may have a failing voltage regulator that could be allowing the alternator to supply too much or too little amperage to the battery resulting in the battery never maintaining a consistent charge as it is designed to....
Question
Showing signs of a blown head gasket.
If there is a head gasket leak, as the engine heats up and expands, that may be sealing the leak somewhat and that would explain your experience. Based on what you are describing, it certainly sounds like a break at...
Question
Won't start unless I wiggled the solenoid harness. Extreme break pressing or shifting through gears several times.
There is a ground or broken wire issue in your vehicle causing the engine to not start. Check the harness to the solenoid and see if there is a loose wire or a broken wire. If the wiring is good,...
Question
Charging system
Hello, It sounds like you may have a failing alternator that is causing your charging system to drain the battery. As you may know, the alternator charges the battery while the engine runs by generating amperage and recharging the battery...
Question
Jeep won't start. One click when key is turned.
Confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If the immobilizer system is on, you may see a security warning light. To temporarily override the immobilizer system, see these instructions. If...
Question
Paint/exhaust
Hi there. We typically don't answer questions like this, as our website and Q & A is directed to help people with routine maintenance and repairs on cars, trucks and SUV's sold in the US. The truth is that any...
Question
I have a Dodge Ram and I ran a mailbox over on my right side. When I turn left and right there's a grinding noise on the right.
After running over the mailbox, the box or stem could have bent the backing plate and is now causing the grinding noise as the backing plate is scraping against the brake rotor on the right side. Inspect your brake system...
Question
While driving it stated making a loud noise. Then it started to jerk, it began to brake itself and wouldn't move.
This may be a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission...
Question
At a half tank of gas my truck will start to studder and then shut off with no warning.
This occurring at a half a tank or below, leads me to believe that the fuel pump and/or fuel pump pick up tube in the fuel tank is the culprit. If the pick up tube is cracked or broken, once...
Question
door lock malfunction has occurred.
The body control module (BCM) can be replaced, but you will need to have it flashed (programmed) to match the VIN number on your vehicle. The dealership or manufacture are authorized to flash the new BCM. If you need further...
Question
Oil pressure gauge at zero
Hi There, This may not be as bad as it sounds. The oil pressure may drop like this when a few things could be happening. Either the motor is in fact low on oil, the oil pump could be failing...
Question
Crankshaft position sensor keeps burning out
It's been my experience that typically when I have run across a situation where a sensor keeps failing in the same way, it comes down to one of two situations. Either there is a problem with the wiring/connector for the...
Question
My key ignition won't turn.
The issue could be the steering column lock mechanism or the key cylinder, or both. To repair those components, typically there will be partial disassembly of the steering column. That is a sensitive area as the air bag is installed...

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