My 90 v6 4runner is running really rich. Idle is horrible, black smoke, stalling. Any ideas on the cause besides 02 sensor? How do I check the fuel pressure?

 

Dont know too much about the 3.slow, but could be a bad MAF. The MAF on my mom's '00 runner with a 3.4 just went out, 400 miles past warrenty :-(..It threw an engine code. I know the 3.4 is a bunch more hitech than the 3.slow but try reading a code...

 

I did pull trouble codes and the only one I got was this 243132. There is nothing even close to this listed in the manual. Anyone know what this code is?

 

What do you mean by "horrible idle"?

 

I mean that it won't idle smoothly. It surges and stumbles and stalls at idle.

 

Pardon me, but what is a "MAF"?

 

MAF= Air Flow Meter The code you posted looks like 3 different codes to me -- a 24 , a 31 and a 32.

24= INTAKE AIR TEMPERATURE SENSOR SIGNAL--OPEN OR SHORT IN INTAKE AIR TEMP. SIGNAL

--INTAKE AIR TEMPERATURE CIRCUIT

--INTAKE AIR TEMPERATURE SENSOR

--ECU

31 = MANIFOLD AND/OR AIRFLOW METER SENSOR SIGNAL CIRCUIT

--AIRFLOW METER/CIRCUIT

--MANIFOLD PRESSURE SENSOR/CIRCUIT

--ECU


32 = AIRFLOW METER SIGNAL (VANE-TYPE)

--AIRFLOW METER./CIRCUIT

--ECU

Go here for the entire list and other help:

http://www.off-road.com/toyota/tech/codes/index.html

Mike in AR

 

How do you pull trouble codes?

 

The link I posted has all the info. It's really not hard.

Mike in AR

 

I am new to this forum but I have a '95 4Runner that has recently been running very sloppy and here is what I have eliminated by trial and error and using a shop.

If you don't have a Check Engine light on it is difficult, mine indicated a code 25, and I used Mike's routine to read it. That is a lean mixture error and currently I think I have a clogged injector on #6 of all places. Just to let you know about the MAF - it is a swing door type and seldom needs maintenance.

Any help from you all on how to check injectors would be appreciated. Also, how about using the Seafoam going through the brake booster hose? Has anyone used this method because that's the only way I think I can get cleaner to the port on this injector.

If I have to replace the injector is there any procedure that has been posted to get the intake off so I can get to the injector?

jammer6