Q: 2004 Lincoln ls v6 my car runs bad when cold until it hits normal temp. The breaks are stiff during the warm up process

asked by on

When cold my car runs bad it shakes hard it shuts off the break peddle is hard until the car reaches normal temp. I had it scanned and the O2 sensor and all coil packs came up including the fuel pump popped up I have had all of them replaced I have replaced the thermostat as well I have had all codes reset an the problem is still there I have also replaced both coolant temp sensors these are things a certified mechanic had said was wrong with my car I assume he was wrong I'm at a lost. Any ideas this seems to be a common issue with these cars but no common answer.

My car has 130 miles.

To identify the cause of poor operation like that you are describing, the cylinder firing patterns have to be looked at on a scope. That diagnostic reveals whether the issue is fuel or ignition related and also which cylinders are affected. Engine compression and intake vacuum should be verified to make sure the engine is basically mechanically sound. If the engine is mechanically sound, that is no sticking valves, steady intake vacuum, even compression, you have a problem in the fuel or ignition system. A possibility is partially plugged up fuel injectors, by the way. If that is the issue, or even a contributing factor in the rough operation, it’s best to remove the injectors from the fuel rail and send them to a lab (e.g., Mr. Injector). On car cleaning is not effective because each injector has an internal miniature, replaceable filter basket. Other possibilities are a vacuum leak, an air induction fault like a stuck idle air control valve or a faulty throttle position sensor, problems with the mass air flow sensor, defective spark plugs, faulty wiring to the coolant temperature sensor and so forth. If you desire that this problem be diagnosed by a certified Mechanic, dispatched by YourMechanic right to your location, please request a rough idle diagnostic and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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. 2004 Lincoln ls v6 my car runs bad when cold until it hits normal temp. The breaks are stiff during the warm up process

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: What do you recommend for transmission fluid and engine oil for a 2010 Lincoln Town Car?

Hello. Ford or Motorcraft brand would be the OEM fluid brand that your vehicle came equipped with from the factory. However, any brand of oil and transmission fluid will work fine as long as it meets the API certification rating,...

Q: How do i get to my timing chain in my 2000 Lincoln ls 3.9L v8?

Hello there, The timing chain is in depth repair on your 2000 Lincoln LS. To get to the timing chain most of the engine accessories must be removed, the timing covers, valve covers, and various other parts. When removing the...

Q: Engine shaking when turned on. Steady Check Engine light.

Hi there. Though there are many reasons that this can occur on your car, most of the time it is caused because of a worn out spark plug or failing ignition coil. Since the check engine light is on you...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...