Tip & How-To about 2008 Audi A8

Running an engine in

When cold-starting the engine, always run the engine warm gently. This will help considerably to make the engine last a long time. Vary the engine load when driving on the motorway for the first time: change the load condition and only run the engine at very low or very high revs for short periods. The accelerator pedal should only be pressed right down in emergency situations. Only use high-grade branded oil of the quality specified in the owner’s manual. If you have to top up with oil, this should have the same viscosity as the original oil. In general, all branded oils from known oil companies meet Audi’s demands and can be mixed with each other.

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2000 ford focus w/ 2.0L on cold start-up runs ruff, idles badly until it warms up


Could be a problem with ECT (Engine Coolant Temperature) sensor or fuel injection system. Will need to test and check in order to discard.

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Feb 16, 2012 | 2000 Ford Focus

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Good day: I don't accept that cold starting an engine at 2000 RPM is OK. Those immediate revs on a cold engine are wearing out parts that need oil lube and warm-engine clearances. Is there a simple way of limiting those cold-start revs to around 1200-1400 RPM? I don't need nor do I want instant warm-up .... I always give my cold engine 30 seconds or so to warm up. Thank you Happy owner of a 2002 Taurus SE with a 3.0 Vulcan engine


I have heard that Fords theory behind that is to supply maximum oil pressure to moving parts sooner. All the Ford products do this and the motors last well into the hundreds of thousand of miles. I wouldn't be to worried about it since there is no issue with it to my knowledge and there is no way to limit the cold start RPM's.

Cold start warm ups are a thing of the past. Better lubricants, engines, fuel injection and other computer controls have made start ups easier on the engine. 30 seconds is barely enough time to warm up anything and after a few seconds oil has already reached all of its intended lubricating points. That first few seconds is the hardest on the engine. Regardless of how any RPM's it is turning.

Oct 20, 2010 | 2000 Ford Taurus

3 Answers

97 Saturn sl2. Won't start after it gets warm. If you drive it for 15-20 minutes and try to restart it will not engage the starter. Wait a couple hours and it will start fine


It is your engine coolant temp sensor (ECTS). 99.9%. the saturn made them with a plastic tip, so they crack over time. A replacement should be about 15 bucks and not too hard to replace. You'll notice your engine temp gauge not working (always cold).

I don't know much about cars, but here's what happens. When your car is cold, the fuel runs rich. Your broken sensor is always reading that the engine is cold, but when it is warm, it runs too rich and floods your engine, not allowing it to start. When your engine is actually cold, everything is fine.

Mar 31, 2010 | 1997 Saturn SL

1 Answer

2.0d x-type 2005 Est. Starting problems when engine is warm


Ok, time for car school. The vehicle is operated by the computer, every electrical concept that is. When the engine is cold, it starts fine because the computer has placed it in "cold start mode", putting more fuel into the engine than normally would until Once the engine is warmed up, a temperature sending unit or temp sensor tells the computer to change to normal run mode. IF said temp sensor is faulty and is not telling the computer to make said change, it stays in cold start mode, still dumping excess fuel in the engine that is now not required, cause it's warmed up. Like keeping the choke closed on older vehicles. Now I think you can answer your own question, when this no start action is happening after warm up and it always starts fine when cold, what's the first thing you check ? Right, the unsuspected temp sensor. Change that and no more start problem. Have a wonderful day. Glad I could be of service.

Jul 11, 2017 | 2005 Jaguar X-Type

1 Answer

from cold start engine warms to quater temp then cuts out leave to cool then will restart and warm up to normal running temp and stays running well after that till next cold start any ideas? the car is a 2liter petrol hyundai trajet 2000 model


Does the Check Engine light come ON when this happens? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. Otherwise, guesswork. I have MANY ideas that could send you on a wild goose chase. I strongly suspect EMS (Engine Management System) sensor beginning to malfunction as it warms up. First strong suspicion is the crank position sensor (CKP) - however,usually always sets a DTC (i.e., P0335, P0336). The next suspicion is the Engine Coolant Temperature sensor. The ECM uses this sensor's signal to adjust fuel, timing, engine RPM, etc based on engine temp. If malfunctioning at a particuar point during engine warm up, it could be telling the ECM the temperature is LOWER or HIGHER than it ACTUALLY is, resulting in the ECM to increase fuel (flood it) or give it LESS fuel (starve it). If this malfunction lasts long enough, the ECM will usually set a DTC for that sensor circuit, either a Range/Performance code, or a "LOW Input" or "HIGH Input" code.

May 09, 2009 | 2000 Hyundai Elantra

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