Check engine light--dealer says it's the thermostat
My yellow check engine light has been on (steady) for the last 3 days. I took it to the dealer and was told that the thermostat needs to be replaced. I was also told that due to the design of the 2004 Ascender, the engine would have to be removed to replace the thermostat. I was quoted $700 to do this repair which is primarily labor.
I know that dealers upcharge but this seems extremely high. Not being all that knowledgeable about cars, I typically don't mind paying a little more for factory parts & service at the dealer but this just feels way out of line. Is it even true that the engine has to be removed to replace this part? If I wanted to hold off to get a better price, am I putting the engine at risk of an even pricier repair while I drive for a few more days? I'm trying to shop around but not having a lot of luck since Isuzu is basically out of business now. Thanks!
Re: Check engine light--dealer says it's the thermostat
It's not the t-stat they read the code wrong go to checker or any auto parts store and use one of there code readers, I had a shop tell me the same thing. the codes are right next to each other Also you don't need to remove engine to do this job you just take off the alternator it's right under. My shop quoted me $300 for a $25 dollar part
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Could be the thermostat. I know nothing about cars but I noticed my 2000 Grand Prix temp gauge was not going to the normal level. My wife drives this car so I didn't notice it for a month or so. Eventually the Engine light came on. Took it to Autozone and the code came back as P0180... (1) low coolant (2) bad thermostat (3) enginge fuel temp sensor. They used a code reader that was about the size of an Ipod nano.
Coolant was okay, so took it to my mechanic. His netbook sized computer showed it was the Thermostat. He reset the codes and the temp guage went back to normal. Was short on $40 for the fix at the time, so I parked the car and promised to bring it back in 3 days. Went out and checked the car a day later at 25 degrees outside without starting the car... gauge still sitting at the normal level. No question it's the thermostat. That car will not be driven again until T.stat is fixed in 2 days.
Running rough and misfiring is usually a one or more bad spark plug wires. Don't go back to that dealer. Replace the wires or have your mechanic do it for you. If you replace them, take one off at a time and install the new one. If you put the wires back on in the wrong order, it will misfire.
Could be a number of things. Should still be under 3/36000 warranty. Take it to the dealership. If the place you got your oil change from used the wrong weight oil, this could cause the light to come on. There are thousands of possibilities, which is why you need a computer to check them now.
f the light is on steady it is prob one of the emission sysytem's like 02 sensor.. as long as light is not blinking ok to drive till fixed..
Clear light by: taking batt cable off for about 3 min and prees your foot on break while cable is off.. then put cable back on.. light will go off for a while but as soon as it sees the problem again it will come on