My check- engine light kept come on. I have taken to the shop over and over i get car on thursday drive it 2 day and the light is back on. it back in the shop for a nother week they drive around we will reset the system. the last time is was the catalytic converter and two sensor/ the engine light came on two day later, it went back in the shop for week. bad sensor they said. Just got the car back this pass Tues here is Thurs light is back on this morning I think I have repace every thing can be repace I have use my auto shop for a long time they BMW and Lexus all of the high end car.

Where I live there is a Schuck's auto parts...and they have a hand held diagnostic tester that plugs right in to your harness. This will tell you whats is wrong.It only takes about 2 min and they don't charge you.On my car it was the mass air flow censor.If you can't find a Auto parts store that does this...take it to a shop soon. Good Luck

Check the oil level before driving it. It must be low on oil. Find out where the leak is. Look underneath the car at the oil pan's drain plug-maybe the service guys forgot to tighten it, or worse, cross threaded it. If they made a mistake, take it back to them to fix it.

check for a bad connection like a bad ground at the battery, make sure both terminals are tight at the battery, the starter and the ground at the engine. the shop that installed the EGR should have erased the codes, after 50 to 100 miles you would be able to go through emissions.

Did you buy this from a dealer? if so, you should have taken it back ASAP I dont know why you didnt have the Toyota Dealer fix the car, now your in the middle of a mess, getting 2 shops involved, and the car still has a problem. When you bought the car, whoever you bought it from, knew there was a problem, cleared the code and it took a while for the check engine light to come back on. So now you will just have to pay someont to fix the car. The trans shop told you it needed a converter and solenoid, the problem is still there, so make it their problem. I think you need someone who knows toyota . theres no recall that I know of. Recalls are free, anyhow. . ecm is warranteed 8 years or 80k miles. Have the dealer check it out. Have them Check Bulletin TC008-04 and T-SB-0378-08

 the alternator belt broke

check the earth straps on the gear box body and engine for corrosion also check the ******** the back of the starter motor hope this helps

Regardless of why the misfire is happening, the shop needs to find and make it right. If you don't return it to them, they can claim it's a new problem, unrelated to the work they did. As I don't have any idea if any sensors were imported with the new engine or if anything was damaged on install, I really can't comment past what I've said.
Hopefully you are dealing with a reputable competent shop...If so, aside from the obvious annoyance, they should definitely take care of the problem for you. I would check fluid levels to make sure that they are good and perhaps even check sensors to make sure they are all on securely but past that I would do nothing more. As far as driving, since you don't know what's wrong, I'd limit driving to only what's necessary but no more.

have the car checked when the check engine light is on,also a good scanner will be able to give you the history codes,get back to me with the codes and we'll go from there. you need someone with a professional scan tool

Sounds like you spilled a little oil on the engine when you added oil. Don't worry it will burn off by itself as long as you don't have an oil leak somwhere. If the smell doesn't go away after running the engine for 50 miles or so have a shop check the engine for oil leaks.

f the light is on steady it is prob one of the emission sysytem's like 02 sensor.. as long as light is not blinking ok to drive till fixed..

Clear light by: taking batt cable off for about 3 min and prees your foot on break while cable is off.. then put cable back on.. light will go off for a while but as soon as it sees the problem again it will come on