2002 Camry 4 cyclinder. P0128 code - replaced the thermostat and coolant. P0128 code is now locked in. Lifetd the battery cable, but it is still there when I start the engine - or - it comes comes back immediately when I start the engine. Coolant temperature looks normal on the dashboard gage when I drive the car. What should I do now?
View 3 RepliesI'm getting a P0128 thermostat coolant below temp. Coolant level checks out. Temp sensor seems to work. It climbs to 160 and holds steady. I simultaneously had a thermometer in the top of the radiator. It went from 86 to 160 with with jump from 86 to 135 which corresponded to the temp sensor reading of 135.
I am assuming this is the thermostat opening. So, the level is right. The sensor is working and the thermostat appears to open and close. Why its throwing a code?
2009 Ford Explorer, 6 cyl, 4.0L, 74K. Read code w/scanner - "P0128 - Coolant Temp below thermostat regulating temperature". Assuming this is pretty straight forward but was wondering what the most likely culprit is (?thermostat?). Ironically, this code popped about a week ago, I cleared it and actually got my inspection sticker earlier today and then later in the day, the CEL came on again and once again, the P0128 code. The coolant level is perfect so I know there aren't any leaks.
View 5 RepliesI have unfortunately inherited a 2007 Toyota Camry LE at the passing of an uncle. I recently purchased an Innova 3140 b diagnostic scanner which pulled up several codes. One of which keeps popping back.
P0128 refers to (according to innova).
Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature).
I have replaced the coolant temperature sensor but the codes came back after a few days. I cleared it once again and the code reappeared that same day. I have a thermostat on standby ready to install if the fix requires such.
I have an engine code of P0128 (low coolant temp etc.) I now think it's because I no longer have an Engine Splash Shield under my engine and the extra air is cooling the engine. I took it off after backing into a snow bank like an idiot. At first I thought it might be that I poured green coolant into the pink coolant because I lost coolant cleaning the throttle body (120,000miles). This mixture supposedly causes clumping and clogs in the system etc. Since then I flushed the coolant system and replaced it with yellow coolant which popular mechanics said was OK. So I'm left with the question of do i change it again to the pink coolant (~$50 compared to ~$15 for yellow coolant, thats why i got the yellow) or do i get an engine splash guard? Or Both?
View 11 RepliesI recently had the engine light come up on my Hyundai Elantra 2003. I read the code with my cheap little code reader with the torque lite (free) app on android. It threw the P0128 code which means a faulty thermostat.
Here's the web link to all the details on the code: [URL] ....
I have checked the coolant level and its good. The strength of the coolant is good to -40 Celsius. The engine fan is not running at all. I recently changed the thermostat. I'm leaning towards faulty ECT. The car takes forever to blow hot air too. It has done weird readings in the past with the temperature gauge in the cab.
I just bought a infrared temperature reader of Amazon and want to check the temperature where the water comes out of the engine past the thermostat and compare it to the reading on the torque app readings. I'm thinking it won't match.
I'm getting a P0128 code on my 2003 V4 Camry. Autozone diagnosis says it's either
a) coolant low level
b) sensor not working correctly
c) thermostat not working correctly.
As part of 90k mile check about 3500 miles ago, the mechanic replaced the coolant. I didn't check the coolant after he had replaced it but I just checked it today and it's about 1 inch below the full level. Is this normal coolant usage considering that it's been about 3500 miles and 3 months since it was last filled?If the coolant level is okay, then how do I figure out if it's the sensor/thermostat?
I have a 2002 v6 Camry with over 270k on it. Today the Check engine light came on while driving on the freeway. When I got home I used my scan tool and it gave me the following codes.
P0128, P0440, P0446 and P0440, P0441, P0446 pending.
I understand that the 128 has to do with coolant temp and that the other codes are evap system related.
What I'm trying to figure out is what might have caused them to all occur at the same time. I know once with my 98 Camry it threw a P0125 which had to do with coolant temp issues but it also threw several other codes for a bad 02 sensor and the 125 was just a false code (replaced the 02 sensors and they went away). If this 128 is possibly a false code or if I also have a bad thermostat/sensor on top of an evap system issue.
Also. coolant level is good and I checked the gas cap and insured it was on tight, reset the codes and am waiting to see what comes back.
I have a coolant leak coming from I am assuming the thermostat housing or thermostat. My question is, is there a gasket behind this that I am assuming is bad or is the thermostat bad.
View 6 Replies2006 F350 5.4L 5R110W
I've had the TCC solenoid replaced. Not long after, it locked up again. I had the whole solenoid body (including harness & sensors) replaced .....continues to run hot and eventually lock up. IIRC, it gives code P0743
Transmission shop seems to think it's an electrical issue outside the transmission and thus not something they can deal with.
I took it to a dealership and they said that if it was an electrical issue outside the transmission, it would be throwing codes every time I start it up....which it isn't. They would start be replacing the solenoid (and possibly the whole body) with 'brand new' parts.
This weekend my friend and I plan on doing a coolant flush, new Mishimoto thermostat housing with high temp thermostat and install a Mishimoto coolant filter.
Truck currently has some unknown green coolant in it and Im going to replace it with Rotella ELC. I plan on doing a couple hose water flushes then follow with about 5 distilled water flushes. I've been reading about putting some Cascade in on first flush to dissolve any silicate goo that might be in there hanging out. I might give that a try. Im sure I can manage this part from all the stuff I read about doing flushes.
This is the part that looks like a little more work involved than the flush. Doing the thermostat kind of worries me because of the tight area in there to work with the fuel line and the EBP sensor being right there. The current thermostat holds temps around 175-185 under normal driving. I bought the new Mishimoto thermostat housing with the high temp thermostat installed in it when they had their pre sale going on for the housing.
I decided to just go with the whole thing because of all the stuff I read about people having issues with the thermostat not fitting the older housing correctly since Im certain I have the original housing from 2004, like everything else that's still original on my truck. I plan on removing the thermostat before doing the flushes and then installing the new housing and thermostat and coolant filter before I add the ELC.
The coolant filter install looks fairly simple to do so I should be ok with that.
Four cylinder, 2004 Camry (2AZ-Fe), Auto with 98,000 miles.
I had to replace my water pump after driving with newly replaced Toyota Red antifreeze from the 8 year old Pink. I drove only two weeks and 1000 miles on it.
I believe that was just a coincidence. Some Camry's water pumps do not last even that long. Even if the coolant was not compatible with Toyota specification, it still could not destroy the pump seals in two weeks.
I keep getting the same code for the check engine light of P0128. I have replaced the thermostat twice and the ECT sensor already. I do know know what else I can do for getting this fixed. I have checked the fans and they are working correctly. I have also checked to make sure there is nothing wrong with the head gasket. My car does not over heat, but it does take forever for the temperature gauge to rise. This is for a 2006 Hyundai Elantra. What else I can do?
View 2 RepliesSo i've had this volvo for about 6 months now.I knew when I purchased it that the two codes being thrown were p0128-Engine coolant temperature, and p0420- Cat efficiency Bank 1.Inspecting mechanic said it needed a new cat to clear the p0420....I went ahead replaced the thermostat and changed the coolant to "fix" the p0128, and cleared the codes, I think the jiffy lube state inspector did not notice the that the catalytic converter test was Incomplete when he passed it. Lucky me I guess.
But now I know that I'll probably have to fix before it gets inspected again. Eventually the p0128 came back on, so I went and got a new ECT sensor. Still doesn't clear the p0128. What am i missing? Coolant temperature sits at a 3'oclock position pretty regularly and quickly. Where to start on the p0420 besides understanding its the Pre-cat o2 sensor that is throwing the code, is there anyway that these are related?
My engine started overheating, and because I was stuck on a bridge during rush hour (George Washington Bridge in NYC), I couldn't get stop the car. I drove it for approximately 30 min (slow crawl), and this happened: [URL] .....
Yes, I know how stupid it is, but there was not even a shoulder to pull over to the side. The only good thing is that this happened pretty much soon as Igot off the bridge, and not on the bridge.
Hose by the radiator cap (is that the overflow hose?) popped out and spewed steam for good 5 minutes. The car did not start at this point. I left the car by the gas station after the bridge, and came back later on in the night. It started and I was able to drive it home (about 10 min away) at crawl speed without it reaching the red zone.
Today, I just did the oil change, topped off on the coolant, and also replaced the thermostat. But the engine still overheats (to the red). The upper radiator hose is burning hot and the bottom radiator hose is not. Also, the fan is working, but it blows out pretty hot air.
So I replaced my thermostat today... to do that I unhooked the negative terminal of the battery, removed the hose off the thermostat housing (I think that's what it's called) and disconnected the switch to the alternator as well as take off the 13mm jam nut holding the wire to the side of the alternator. I reconnected everything up, put the key into the ignition and just turned it before starting the car and the alarm started going off. I disabled the alarm from controlling the lights and horn by unplugging the electrical connector just behind the fuse panel so I could do some errands today. I then disconnected both terminals on the battery and touched them together to reset the ecu.
After reading that holding the key into the door lock until the windows roll down would reset the alarm; this weekend I'm going to hook up my driver side door lock mechanism (been a little lazy) and give that a try.
problem is the my 1998 Legacy (142K) overheated this past weekend. It shut off and I had it towed to a "new" mechanic around the corner from my house. He diagnosed the problem as being a faulty thermostat. He replaced the thermostat and returned the vehicle to me. Two days later my wife was driving home and the car had a major overheating incident with resulting serious mechanical failure. I did a little research and within about five minutes found that this problem is quite common for this car and is more commonly related to a head gasket issue. My question is should this mechanic be held responsible in any way for the misdiagnosed problem? If so, what would be the best course of action? The car was otherwise running fine and in fact I recently had the transmission rebuilt.
View 3 RepliesBought this truck at auction a few days ago. Started drive home and noticed temp gauge almost pegged full hot. Stopped and left it and pickup up later that day with trailer. Got home and started and ran it. Will not overheat at idle. Gauge fluctuates between full cold and 1/2 at idle. Rev up and temp drops to full cold. Drive around town under 35 and it stays between 1/2 and 3/4. Get on the highway and Pegs full hot. Replace thermostat and flushed system. Lots of rusty water and chunks of rust/mud poured out.
Upper rad hose is firm and hot. Lower rad hose is warm soft. Bypassed heater core and still over heats. I can run water hose from top hole on radiator and water crosses threw radiator and pours out the bottom so I don't think it's clogged. It's not the head gasket, I have no smoke, no milky oil and no oil in coolant. Fan clutch seems fine, I can spin it with the engine off and feel resistance. Truck hasnt boiled over while running hot so the gauge may be wrong. If it means anything the truck runs very rough and pulled up a misfire on cylinder #1 and had a iac code.
Got a 2002 GT with the NA 3.8 and 150,000 miles. The car has pretty much sat for the past 6 months, driven very sparingly. If it's been sitting for a while (like over night or longer) it will start no problem. If I turn the car off for a shorter period, it will crank but not fire. It will start only if I pump the gas as I'm turning the ignition.
In addition, on occasions it has died while at idle or coasting to a stoplight. After it dies it will fire back up no problem.
Fuel problem perhaps?
The "Service Engine Soon" light has been on for about a month before it started acting up. I had the codes checked at AutoZone and it came up with P0442 and P0128.
I just had my thermostats replaced in my 6.4, and I'm concerned about the regent process. I read that when the P0128 code is thrown, truck will not go into regen. Is this true? How can I manually start the regen process?
View 1 RepliesCar's a 2005 SE I4, auto, US-made
So, I finally got the Techstream to work; I think. I had ordered one which never came, then ordered a second one, which showed up after some five weeks. It took some playing around with the software, but it seems that I finally got it to work tonight on my old, and slow, Dell laptop (Windows 7, 32-bit), which will be devoted purely to car diagnostics, since there are supposed trojan viruses in the software.
The car's temperature gauge had been running very low, I had lost top-end power, as in, hitting a wall at 80-85 mph+ where there was no acceleration despite the pedal being floored, and eventually the check engine light came on. After the light came on, I took it easy on the car and ordered the software and cable. In full disclosure, I did a complete coolant flush in late Summer/early Fall, 2015, pouring in the proper fluid. There are no leaks and the level is correct. There are no foul odors from the engine. There is a slight head gasket leak on the upper right hand corner which I plan to address when the temps warm up again (no codes pertaining to vacuum leaks).
Tonight I managed to use the software and cable for the first time and pulled the following codes:
Engine and ECT, Monitor Status COM, DTC (Code) P0128
Occupant Detection, Monitor Status None, DTC (Code) B1771
So, do the symptoms described above, including loss of power, "match" the bad thermostat diagnosis?