Code reads P0217. Replaced ECT Sensor two weeks ago and check engine light (CEL) went out. CEL illuminated again yesterday (10/8/13) 10 mins after engine start in the morning going 55mph slightly down a hill with outside air temp (OAT) 68 degrees. No sysmtoms before or after CEL illuminated. Temp gauge normal; A/C was On and working; Coolant levels normal; No loss of power; Radiator 2yrs old. Where should I start troubleshooting? ECT Module? Thermostate? Water Pump? A/C condenser?
P0217. (throwing parts) that is $$$
2004
The ECU sees overheating , that can be TRUE, or false
the ECU is stupid and can only see the sensor and believes it.
http://engine-codes.com/p0217.html
where to begin, well its called a scan tool
you plot the ECT and see if it is going high,
easy huh?
the dash temperature guage is just a toy, it is seperate toy , too boot. if it does not show over heat or bouncing , then ignore it.
there are only 2 possibliites, here.
1: it is overheating or just for a few seconds, DYNAMICALLY
2; or the ECT is fibbing. (sure its wires)
2 possibles !
the key is finding out which it is.
the scan tool will show you , (be ,that the ECT in fact does show overheat. you can be sure it does, see my logic, ?)
no? well the ECU saw it , but you failed to look !
see light blue line here, that is bad sluggish thermostat.
if you ECT shows a glitch at any time. above say 215F
the FSM covers this rule on the 217 page, read that.
if it glitches high , it was an overheat.
even air below the thermsat can do that
or some bumpkin put it in upside down or with the bleed hole
in the wrong direction
or any of 10 other failures. overheating can be caused by vast number of reasons. i can list them all, but will not.
first scan the ECT , report what you saw and we CAN fix it.
if the ECT glitchs to insane temps, the wire fell off, or is corroded.
knowing glitch actual level, speaks VOLUMES to good tech.
http://www.fixkick.com/my96-16v/TP-MAF-VSS-ECT-FUEL.JPG
Need to check the plug for the ect sometimes you can buy a defected sensor
SOURCE: car starts to overheat
Hi
It certainly sounds like a faulty thermostat, and I have to say, I'm shocked that the dealer just cleaned and reinstalled the old one, he should have fitted a new one.
My first port of call with this one would be to fit a new thermostat.
Very best regards
Geordie
SOURCE: Temperature gauge problem on a 1987 Samurai
There's two sending units in the intake. The little on with single prong at the t-stat housing is for the guage and the bigger one plastic connector is for ecm.
Your signal is getting grounded somewhere.
SOURCE: 2002 Suzuki xl7 Mysterious Overheating Issue
Most Suzukis A/C systems will cut out when the engine tempurature is too high (to reduce the load on the engine). Also, in this condition, when the A/C compressor cuts out, the A/C thermo fan (electric - in front of the condensor) may come on ( to try and cool the engine). Combined with the fact that your temp gage says the engine is hot, I would be checking your cooling system very closely. It could be as simple as leaves blocking the air flow through the radiator (between the condensor and radiator), or as serious as the internal cores of the radiator being blocked (different sorts of coolant being used can sometimes produce solid matter that can do this).
Testimonial: "Great explanation and advice to check the cooling system, specifically the radiator. Unfortunately the internal core of the radiator was blocked."
SOURCE: where is the coolant level sensor? service engine ...
coolant level sensor will be in the coolant expansion tank.
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Thanks for the feedback. It turns out that I didn't properly vent the system after tinkering around with the coolant levels. All I needed to do was run the heater on high as the system circulated until all trapped gases were removed.
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