Recently tranny cooling line broke in radiator and replaced but check engine light came on after being fixed and car shifts hard into 3rd gear around 25 mph. I received codes:
P0302: Cylinder misfire detected-cylinder number 2
P0455: Evap
P0720: Output Speed Sensor
P0760: Shift Control Solenoid Valve C
P0765: Overdrive Solenoid Valve System
I've know about the output speed sensor for a while and the evap code comes up every now and then (probably need a new fuel cap), but will the speed sensor mess with the solenoid valves? Where is the wiring located for the solenoid valves so I can check to see if the wires are corroded?
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patriots have all kinds of cooling problems,make sure that you have enough tranny fluid in it and remember your torque converter uses about 4 quarts,the tranny has a cooler in the radiator,replace the radiator with one that has 2 rows of cooling,your radiator is going to die just like the rest of patriots
sounds like the bands need adjusting and the valve body needs to be cleaned. parts store has a valve body kit but its not for faint hearted. tranny valve jobs must be done in clean organized area.other possibility is the trans-oil cooler inside radiator broke. that'll ruin tranny and cooling system. only link of tranny and heat is at trans-oil cooler in radiator
Have you checked the coolant level in your radiator? GM puts a cooling unit in the bottom of the radiator, and that is connected to the tranny cooling system. Check for oil(tranny fluid) in your coolant of the radiator. Don't panic if you see it, just pull the radiator and have it fixed, or buy new radiator, then change all fluids in tranny and radiator.
Thats not oil,its transmission fluid. The transmission fluid also runs through the radiator to help cool it off. Most likely,when the radiator was replaced,and they hooked the transmission lines back up,they either broke an o-ring on the lines,or dont have it locked in all the way. I cant remember if the lines are threaded or not,...but either way,..it happened when the radiator was replaced,ad should be taken back to the shop that did it,and have them fix it. For FREE of course...
The transmission and engine are there own entities. Unfortuantly the radiator in some vehicles cool the tranny fluid. Its possable when the coolant lines were disconnected from the transmission or from the radiator, the seal was broken on the radiator where the line goes in from the radiator, so you wont see it because its internal. This will allow trans fluid to enter into the radiator. Be careful with trans fluid mixed with the coolant may cause engine damage. Your solution to the problem if this is infact the source would mean replacing the radiator, if you do this be sure to flush the coolant system to rid trans fluid.
could be a good candidate for the overheating problem
it is probably the oil line that goes to the oil cooler in the radiator and if it doesn't have sufficient flow then the oil in the transmission gets progressively hotter
before replacing it consider this
transmission oil coolers that are in the radiator tank keep the oil at coolant temps which is around 95 C
if you spend a bit of cash and fit an air to air transmission cooler , it brings the operating temp of the oil down to 1/2 ambient temp
besides the fact that your are now removing an added heat source from the coolant of the engine the results are --cooler running engine and cooler running transmission
worth talking to an accredited transmission specialist shop
Either you have loose connections for Transmission cooler in rad, or your tranny cooler in the rad is defective. First, check the transmission lines and connections to the rad. If they are tight you'll have to either replace the rad or put an exterior tranny cooler on your car.
did you recently empty the tranni? like fluid or filter change? If not, there is a leak. I've seen the radiator go bad and tranni fluid gets forced into the cooling system. Check cooling system for reddish oily substance. If there is, replace radiator and refill tranni and cooling systems. may be a good idea to do cooling system flush.
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