2000 Toyota corolla idles but then bogs down when you try to accelerate. This happened after changing the fuel pump

SOURCE: 1990 toyota camry 4afe engine

First I suggest a full tune up, including air and fuel filters. If you have already taken care of this, then you maybe overloading or flooding your engine with fuel. If the problem seems worse when you first start the car in the morning and gets slightly better as it warms up then you may have a bad coolant temperature sensor. This is about a $30 part. This sensor adjusts the amount of fuel pumped through your injectors to make up for cold temps much like choking an older vehicle. If it goes out, it sends the ECM a signal that the temp is negative 27 f and so it dumps all the fuel it can on the fire to compensate. A good indicator of this would be poor fuel milage, with this car you should be getting between 27 and 32 mpg. Most mechanics charge about 60 to 90 bucks to change this part.

SOURCE: Toyota corolla verso d-4d loss ofpower

Just change the air flow meter.Thats faulty.

SOURCE: 2001 TOYOTA COROLLA NO POWER

This problem does not seem to be the fuel pump. it appears to be an electrical problem in particular your ignition. Also check the MAF (Mass Air Flow) sensor. if the computer cannot read how much air is coming in it will try to shut down.

SOURCE: 1994 toyota corolla has a runs rough at idle and

I have a similar problem with one of my Toyota Corollas. It's a 95 model with the 1.8L engine (7A-FE, automatic). But unlike yours, it has plenty of power while running. Here's what it does. Occasionally the engine misses. Sometimes it will die. This is most likely to happen when you start the car and put it in reverse and start rolling without giving the engine time to adjust. I've been told by some customers that it will die sometimes when coming to a stop. But this has never happened when I drive it. I don't think it's a fuel issue because the car runs just fine when it's running.

Here's what I've tried so far:

1. Replaced spark plugs and wires.
2. Used gasoline additive fuel injector cleaner.
3. Checked air filter.
4. Checked vacuum hoses for leaks.
5. Replaced PCV valve and hoses.
6. Cleaned the air intake and throttle body with carburetor cleaner.

1. Check the throttle position sensor.
2. Check the MAF sensor.
3. Adjust the idle via the set screw.

SOURCE: Toyota 1999 Corolla,low idle,my corolla idles at

adjust the accelerator cable.

Testimonial: "i thought the idle was ecu controlled,but i see what your saying,ajust cable stop.ie allen screw with locknut to bring up revs.thanks"