Running rough and engine shutting off on start

Hi myscrubjays,

Thank you for the donation.

From the symptom description, I would suspect either the spark plug wires were incorrectly installed or the ignition coil is faulty or wire harness is loose. Recheck those and see if you can find anything out of place.

If plug wires are correctly installed, check if sparks are bright when cranking.

If I am correct on the 1999 Camry four cylinder the longest spark plug wire's end goes to the closest connection to the front of the car and the other follow to the back. Am I correct?

Also, where is the ignition coil? I appreciate your help.

Here is a diagram of the ignition coils and the firing order.

.

Car specs: 199 Toyota Camry LE 4 cyl 2.2 L, 101K miles . The problem is after car has been running for about 20-30 minutes the car stalls out completely ( usually on the highway which makes it a dangerous problem ) with the check engine light coming on . When you try to start the car back up it starts but dies instantly unless you keep your foot on the gas . Once you let the car sit for an hour or two the car starts normally and idles fine without having to keep your foot on the gas . About 12-18 hours after non use the check engine light goes back off and the car appears to run fine until the next incident . Only common factors that ocurr when the problem starts happening is that it is at night so it is colder than normal and the heat is on and sometimes on the highest setting . Took it to a mechanic who ran codes and was sure the ignition coil was bad ; replaced this . Problem still reocurrs, not sure if somthing is killing the igition coil or if my mechanic is just misdiagnosing the problem . Not happy with the mechanic since I'm 236 bucks into this with no resolution of the problem . Any suggestions would be greatly appreciated . :cry:

[quote:b75edef2de="Frederickg"]Car specs: 199 Toyota Camry LE 4 cyl 2.2 L, 101K miles . The problem is after car has been running for about 20-30 minutes the car stalls out completely ( usually on the highway which makes it a dangerous problem ) with the check engine light coming on . When you try to start the car back up it starts but dies instantly unless you keep your foot on the gas . Once you let the car sit for an hour or two the car starts normally and idles fine without having to keep your foot on the gas . About 12-18 hours after non use the check engine light goes back off and the car appears to run fine until the next incident . Only common factors that ocurr when the problem starts happening is that it is at night so it is colder than normal and the heat is on and sometimes on the highest setting . Took it to a mechanic who ran codes and was sure the ignition coil was bad ; replaced this . Problem still reocurrs, not sure if somthing is killing the igition coil or if my mechanic is just misdiagnosing the problem . Not happy with the mechanic since I'm 236 bucks into this with no resolution of the problem . Any suggestions would be greatly appreciated . :cry:[/quote:b75edef2de]

Try the fuel pressure and MAF sensor for a start.

Hi,
I have Toyota camry 4 cylinder 1999 model. Current mileage is 105K.
2 months ago I did my complete 60K service with Toyota Dealer. I am not satisfied with the service since they over charged. And also my fuel milage went down from 24 to 21 miles per gallon.

Nowadays I see an new issue.

Issue:
While I drive suddenly the engine stops. This happend 2 times in the past 2 months. When I start again, it starts fine and runs good. I dont get any engine check.
The timing belt was changed recently ( 2 months ago). Can somebody tell me what could be the reason for this?

Thanks a lot for the help.

Maybe your throttle body needs to be clean after a certain amount of carbon that has been building up over time.

this guide can help

https://www.2carpros.com/articles/engine-stalls