Question about Toyota Cars & Trucks
The transmission speed sensor was replaced and the diagnostic test show no codes. Took battery cables off overnight and still acting the same. It looks like it wants to pull off but giving me a rough pull off in drive one minute and the next time around when in drive, it acts like its in neutral. Any other suggestions please...Thanks
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Posted on Jan 02, 2017
Symptoms of a faulty Camshaft Position Sensor can include hard starting (or no starting), rough running/misfiring and/or loss of power.
Code 340 COULD be caused solely by a faulty Camshaft Position Sensor. However, this code refers to the entire circuit. So, replacing the sensor may not fix the issue. The problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM.
Codes 171 and 174 typically appear together. They are caused by the 02 sensors reading too much air (lean) in the exhaust. In most cases, simply cleaning the MAF sensor does the trick. I typically take it off and spray it with electronics or brake cleaner. Just make sure it dries before reinstalling. If this doesn't eliminate the codes, inspect all vacuum and PCV hoses, check for a dirty fuel filter and ensure the furl pressure is within limits.
For clarification, the first trip to the shop your car showed codes 402, 732, 733, 171 and 174. After changing the DPFE/EGR, did ALL those codes go away and now only codes 340, 171 and 174 exist? Or do you have the second set of codes in addition to the first codes?
Posted on Jan 15, 2009
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For the record: if the sensors they're referring to are the input or output shaft speed sensors, they are very easy to find...just remove the air intake box (where the air filter is) and they're right there on top of the transmission. Input sensor is the one closer to the front of the vehicle, output towards the rear.
Posted on Aug 08, 2009
SOURCE: 2002 jeep liberty speed sensor
Jeep Liberty 2002 woahs !
by porth21 - 2/1/09 7:35 AM In reply to: Jeep Liberty 2002 speedometer not working by Dannywon
I have a 2002 Jeep Liberty Limited with the same problem. The main problem I have found to be the routing of the speed sensor wires located on the rear difrential. They are 2 blue wires on my jeep and probably the same on yours. The problem is that they rub on the E-brake cable and once the wire is exposed they short and the speedometer and any other options running off they speed sensor quit working and that includes the tranny shift points and can cause the torque converter to not unlock and cause stalls. I am having the same problem for the third time and chrysler and jeep are both aware of the problem and unwilling to repair the problem or post a recall.
Posted on Apr 01, 2010
Well, first do the service. Pull the pan down and look for metal shavings. If there is metal shavings your in for a transmission. If not, you may have a problem with one of the transmissions shift solenoids located near the valve body.
P.S. The Duramax has the Allison 1000 transmission not the dodge cummins and they are one of the best trannys on the market.
Posted on Sep 04, 2010
This is Ron out of Vero Beach Florida. I have been doing trannys for years. The problem you described is caused (more than likely) by a seized clutch pack. Depending on the trans, and your car should be RWD with a 700r4 tranny, there are several sets of clutch packs and at least one band. Automatic transmissions rely on fluid pressure to "engage" the correct set of clutch discs, at the right time , to engage and change gears. I have seen in the past, where a customer parks his car for the evening and the next morning, no move. What happened?? More than likely, a clutch pack was on it\'s way out but cause the car was hot the plates were free, but after cooling, they can weld themselves together and actually "lock-up". In the morning you know the end result. Your tip on "moves in Nuetral" is the give away. Ron
Posted on Jan 18, 2013
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Mar 28, 2017 | 1996 Toyota Avalon
Mar 09, 2016 | Toyota Cars & Trucks
Oct 30, 2013 | 1998 Toyota Avalon
Oct 15, 2012 | 1996 Toyota Avalon
engine and the automatic transmission (transmission control is only
for automatics, engine is still computer controlled no matter the
transmission type) in this vehicle are computer controlled and in
most cases when a fault occurs a fault code is stored in the memory
of the computer control module. There are exception to this, such as
the Mass Airflow Meter and fuel pressure problems. What must be done
is to have all the basic testing done such as a scan of the system
for fault codes as well as a check with a live data scanner tool for
engine functions that are not within range of normal, a trained
technician is required to know what is correct and what isn't, then
based on careful diagnostics done from a factory repair manual the
correct part is replaced or the wiring repaired or the computer
replaced (known as the PCM), which is very rarely the problem. Other
basic checks must be done as well such as mechanical problems with
the engine as well as engine state of tune and mileage on the engine.
The transmission can have mechanical issues as well such as no gear
engagement at all or a failed pump or other pressure related
Oct 04, 2012 | 1996 Toyota Avalon
Sep 28, 2012 | 1995 Toyota Avalon
May 16, 2012 | 1996 Toyota Avalon
Nov 03, 2009 | 1998 Toyota Avalon
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