My car runs fine when the engine is cold, but as soon as it warms up, it stalls whenever i stop.?

Question

My car is a Vauxhall Vecra 1.8 R reg.

Answer 1

Perhaps the carburettor is set on a lean mix. It saves petrol but if it's set too lean, there won't be enough of a petrol/air mixture to burn.

If the automatic choke enriches the mixture, there's more petrol in the petrol/air mix and there will always be a flammable mix.

Once the engine heats up, the auto choke disengages and the mixture goes back to normal.

Also the other stuff mentioned here. Idle speed (auto choke causes idle to run higher when cold). And dirt in the carb or the fuel line. Have you ever accidentally run the petrol tank dry? Sometime dirt can get in the pipe from the tank to the carb and cause problems.

Although, since it's only causing problems when reaching working tempertaure, the idling and the mixture are the two areas I'd check first.

Invest in a Haynes Workshop Manual - from Halfords - they're invaluable and it will give you clear instructions on what to do - with photographs. Right after I buy a car, I buy the Haynes manual for it. Best money invested in the car.

Answer 2

it isn't incorrect to operate water to a warmth engine. that is purely that the stress interior the radiator must be decreased first and thoroughly. The layman won't be able to attempt this thoroughly and it is the reason manufacturers take the threat-free way out and allow you to recognize to operate at the same time as chilly. maximum cases, if the plastic reservoir has water in it, the purely element necessary is to fill up the reservoir to its severe mark element. it particularly is adequate and must be executed chilly. at the same time as the thermostat opens the water will be sucked in, if there's a want. at the same time as the water temperature rises, the extra water on boom is channeled lower back into reservoir. The water is sucked lower back into the device at the same time as that is cool. in this type, the water want no longer be refilled in many cases. A examine once a week is adequate for a threat-free and non leaking device and water is purely necessary to make amends for evaporation from the reservoir. although, once you've allowed the water to dry out interior the reservoir, you'll want to open the radiator cap.attempt this at the same time as the engine is contact warmth or chilly purely. Fill the water to the properly. do no longer replace the cap yet. keep it on a threat-free position remote from the vehicle engine. commence the vehicle and enable it idle till the water is operating by ability of the device. you will see the water swirling in the course of the neck of the radiator at the same time as the engine is warmth. it is at the same time as the thermostat is open. fill up the radiator till the neck of the radiator if necessary. Do it heavily because the engine is operating and is a feasible threat to you. when you've executed so, end the engine, replace the radiator cap firmly and fill up the reservoir to the severe element mark. Now, you're properly and prepared. the reason of the engine operating technique is to allow the thermostat to open and any trapped air to be expelled. Air is seldom trapped yet at the same time as the point of the water is low adequate you may have trapped air. too a lot bubbles of air isn't good in a radiator device. One very last element, examine the water element interior the reservoir primary for a week. Any severe lack of water ought to signify a leak someplace interior the device. through the way a chilly operating engine isn't as effective as a marginally warmth engine.

Answer 3

Your idle is set too low. When the engine is cold the choke speeds the engine up hence the absence of the problem. Rather than just adjusting the idle, get the engine tuned.

Answer 4

The same thing was happening to me!! I took it for a service, and they changed all the filters which fixed the problem... Until then I had to be really careful not to put the clutch down too early when slowing down and stopping, as I found this helped me not to stall!!

Answer 5

If it's fuel injection, it's the idle air control (some are switches, some are valves). If it's carburetor, it's likely something with the choke.

Answer 6

If it eventually runs fine after finally warming up, it is usually a problem with the automatc choke. It will need to be adjusted or the little heater element replaced. Should be under one hour's shop time.

Answer 7

If its an injection, then its probably the fuel pump or possibly the injectors are dirty. If its a carb model, it could be . Fuel pump. Blocked fuel filter. Blocked float jet in the carb or even the auto or manual choke failing to disengage.

Answer 8

could be an air leak in your intake gaskets spray with wd40 to test remember to degrease your engine while it is still running to evaporate the water and it doesn't mess with your ignition system wd40 can loosen your bolts if you don't remove it also check the air and fuel mixture sensor refere to a repair manual or ask an auto parts store to show you one

Answer 9

dont drive it long enough to get it warm .