IDLING PROBLEM When driving car is spot on.After 15 seconds in traffic the car will cut out.Starts up fine and drives until it stops again.I have fitted new plugs,top and bottom inlet manifold gaskets and checked all breather pipes.I have also had the car plugged up and no faults are showing.could someone please help me. Thanx

Radiator cooling fans not working? The ECM is protecting the engine by shutting it down.

1. Replace the fuel filter; and

2. Check the operation of the electric fuel pump.

Then retest to see if the problem recurs.

Could be a fan clutch, sticking thermostat, or restriction in the cooling system including air in the system.

sounds like 'vapor lock' try leaving your gas cap loose

radiator blocked try changing it.

change you pcv vavle and distrubter rotor

A reason for hard shifting could be a problem with many things with various degrees of seriousness. It could be your ATF( automatic transmission fluid) is low or broken down and old. This would cause the hardness and the reason for stop and go traffic effecting it. Another possibility is your transmission is just shot, and the timing gears inside are worn and not properly shifting at the correct RPM causing a **** during shifting.

Some possibilties, not all!

~Lucas

Check all ground connections and clean them thoroughly. If I was a gambling man, I would lay down money on it being a bad ground. It likely is a combination of all the ground connections being poor.

You have one of two very common problems.
Number one may be a stuck open EGR valve
Number two would be a failing Idle Air Control valve (IAC).
Try this: Open the hood & locate the EGR valve, close to the firewall, behind the intake. Find & take with you a small hammer. The next time that it happens, open the hood & tap on the EGR valve. If it is sticking "open" the tapping may dislodge the carbon particles that are keeping it open.When the EGR valve is open, exhaust is getting into the intake at idle, and this will def stall out the car.
There is no repair to the IAC valve, it would need to be replaced if it is bad.
One of these two scenarios will cure your problem, I see it every day.

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