93 mazda 626 idles ok. Cuts off when i mash and release gas pedal?

Answer 1

When you "mash" on the gas pedal, does the engine stay running or slowly cut off?

If so, the most likely problems are:
1 Fuel filter clogged and not suppling enough fuel to the engine when you "mash" on the gas pedal.

2 There is also usually a filter inside the gas tank before the fuel pump, and that filter may be clogged.

3 Your fuel pump going out and needs to be replaced

4 You have bad gasoline in your tank.

5 Fuel injectors need to be cleaned.

If after you "mash" on the gas pedal and it stays running fine, but then cuts off only after you release the gas pedal. Check the air filter.

Answer 2

Most likely the car has a vacuum leak. It idles fine, but then cuts off after you release the gas because the car goes too lean too fast.

You can check this without buying any parts and changing fuel filters and stuff by simply hooking up a vacuum gage to one of the vacuum lines and actuating the throttle from under the hood while you are watching the gage. If the vacuum does not increase dramatically when you release the throttle there is a vacuum leak somewhere. All you have to do is find it and plug it. It usually only requires replacing a 2-3 dollar piece of rubber tubing.

Alternatively, you can hook up scanning software to the engine computer, and watch the MAP from the software, but this requires extensive knowledge of the software and computer.

Answer 3

hi Rachel, you probably did no longer point out what engine determination you have on your Cougar: the two.0L 4 cylinder or the two.5L DOHC V-6 engine? (There are extremely some issues on each and each engine which will reason your subject) If yours has the two.0L (4 cylinder) probability is the subject is a split PCV hose elbow. extra: @ keith p, which comprise your self! there is no adjustment in this engine of ANY style, the PCM (Powertrain administration module) has comprehensive administration of the full engine! extra be conscious: The engine will nevertheless idle @ approximately 500-550 RPM with the IAC unplugged! it is how the minimum air fee is adjusted!

Answer 4

i own are repair shop,and you need to check the air filter,and the gas filter on it,,there's a good possibility they may be clogged up,,this will cause what yours is doing,,,it may also just need a little tuning to get it to run better,,in some cases the 0-2 sensor will make one die when you give it gas and let off of it like that,,you need to have it checked to be sure,with today's cars there's a lot of things that can cause this,,good luck with it,hope this help,s.