Camry Won't rev past 3000 - Toyota Nation Forum : Toyota Car and Truck Forums

Sailingdude · 02-18-2011, 07:54 PM

Hello all,

I have a 2001 Toyota Camry LE with the 2.2 four cylinder auto transmission. I just replaced the engine and tranny and everything seems to run fine except the enigine won't rev past 3000 rpm. Its almost like it has a rev limiter set there or something, I'm not sure whats going on. What do you all think?

Thanks!

tacosteelersman · 02-19-2011, 07:22 AM

Check your air filter box and air intake hose, look for sensors missing or fallen out of the air hose. Also look for cracks in your air hose, this issue reminds me of air entering the engine and not being metered by the MAF sensor.

Sailingdude · 02-19-2011, 09:33 AM

Thank you, I'll try that and see if it does anything.

Jason.MZW20 · 02-19-2011, 06:18 PM

Quote:

Originally Posted by tacosteelersman

Check your air filter box and air intake hose, look for sensors missing or fallen out of the air hose. Also look for cracks in your air hose, this issue reminds me of air entering the engine and not being metered by the MAF sensor.

Well the only thing is the 5SFE uses a MAP sensor.

Sounds like a camshaft position sensor issue. The camshaft position sensor on the 5SFE is behind the timing cover near the cam gear.

***fenixus*** · 02-19-2011, 06:38 PM

... or clogged cat converter ...

Sailingdude · 02-19-2011, 06:59 PM

The mechanic said it could have been the cat converter. He said the easiset way to check was to unscrew the O2 sensor, and set it aside and see if it revs any better then. I tried that and it didn't make a diffrence. I remember the camshaft position sensor. Would there be a way to test that to see if it was bad?

***fenixus*** · 02-19-2011, 07:02 PM

do you have a CEL on or tried scanning computer for pending errors (those last only up to turning the ignition off)?

Jason.MZW20 · 02-19-2011, 07:53 PM

Well don't rely on code output too much. My MAF on my 1MZ is reporting extremely low and my fuel trims are maxed out at idle. Do I get P0101 for a problem with the MAF range? Nope. It sucks.

You still have to do a reasonable amount of troubleshooting. It really does help to have a live data OBDII program/connector with logging capabilities.

Sailingdude · 02-19-2011, 08:21 PM

It keeps throwing the P0401 code. Something with the EGR recirculation or something. I have checked the EGR stuff, and the mechanic checked it too. It is all hooked up right. Would the EGR, or that code cause it? I wouldn't think it would but I could be wrong.

***fenixus*** · 02-19-2011, 08:26 PM

Quote:

Originally Posted by Sailingdude

It keeps throwing the P0401 code. Something with the EGR recirculation or something. I have checked the EGR stuff, and the mechanic checked it too. It is all hooked up right. Would the EGR, or that code cause it? I wouldn't think it would but I could be wrong.

P0401
Exhaust Gas Recirculation Flow Insufficient Detected

DTC detecting condition:
After engine is warmed up, intake manifold absolute pressure is larger than value calculated by ECM while EGR system is ON
(2 trip detection logic)

Trouble area:
-EGR valve stuck closed
-Open or short in VSV circuit for EGR
-Vacuum or EGR hose disconnected
-Manifold absolute pressure sensor
-VSV for EGR open or close malfunction
-ECM

Sailingdude · 02-19-2011, 08:49 PM

Quote:

Originally Posted by fenixus

P0401
Exhaust Gas Recirculation Flow Insufficient Detected

DTC detecting condition:
After engine is warmed up, intake manifold absolute pressure is larger than value calculated by ECM while EGR system is ON
(2 trip detection logic)

Trouble area:
-EGR valve stuck closed
-Open or short in VSV circuit for EGR
-Vacuum or EGR hose disconnected
-Manifold absolute pressure sensor
-VSV for EGR open or close malfunction
-ECM

Thank you! That is very helpful, I will need to look at that further and see what it could possibly be. Do you think that would cause it not to rev though?

***fenixus*** · 02-19-2011, 08:57 PM

Quote:

Originally Posted by Sailingdude

Thank you! That is very helpful, I will need to look at that further and see what it could possibly be. Do you think that would cause it not to rev though?

I would check the MAP sensor first. it's rubber vacuum hose may have a minor pin size hole leak for starters or the sensor itself went haywire and reports wrong pressure to the ECU (ECM).

EGR stuff is tricky too. you may simply have closed shut valve (full of carbon, unable to open) or shot electrical control unit (VSV = Vacuum Switch Valve) which doesn't respond to signals from ECU. check the EGR modulator too, it has a filter inside, maybe be clogged up. also make sure the backpressure hose connecting bottom of modulator and side of EGR valve is OK, without it the system won't work at all.

Sailingdude · 02-19-2011, 09:54 PM

Ok, I'm going to try that. I have a buddy that is a mechanic, and he has one of those nice OBD II scanners that you can go through everything with so I think I'm going to try that too. I'll post back and let know what I found. It may help someone else later on.

Jason.MZW20 · 02-19-2011, 10:19 PM

P0401 won't cause limited revs, but a bad MAP sensor can.

***fenixus*** · 02-19-2011, 10:25 PM

tell the friend to read the freeze frame data on that P0401, it should have recorded all engine operating conditions when P0401 was triggered.

also use the datalogging feature and replicate the problem. then browse the logs to find any indication of what went wrong right before engine had revving problem.

as Jason noted above, bad MAP (or its hose) may cause your problem for sure. there are other things possible too, but check that one first. OBD2 results should help in further troubleshooting.