1999 rx300 4000rpm @ 65mph?
#17
Spark Plugs
I received the car back and all they have to say is spark plugs?? I just had the spark plugs changed 5 days ago..I will find out more about the coil packs. They also wouldn't give me the rest of the CEL codes without changing the spark plugs for $500. "They have to start with the first code and move on to the next" Doesn't Autozone check for free?
$500 for six plugs is kind of steep. I had mine done at Lexus for $220 installed and got a nice loaner for a day. Try to talk that price down, you're talking almost $100/plug, that's crazy.
As for Autozone, yes, they will read all your codes for free. They might just give you a code, so you'll have to search online to see what each code means.
#18
Moderator
When I replaced spark plugs, immediately one of the coil packs went out .. misfire went from one cylinder to another cylinder.
Salim
Salim
#19
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Update!
First, thank you, everyone for the advice.
I was having problems with my transmission not shifting into O/D.
I took the advice to disconnect the battery and pull the ECU fuse. I did this and waited for 1hr to reconnect everything. I drove the car and after about 2mi. the CEL came on again. Althought the CEL came on, the transmission shifted beautifully into overdrive. This was great. I was still a little concerned about the CEL and wondered what the code was. So I took somemore advice and went to Autozone today and had the code checked.
The code was P0125 (Insufficient coolant temperature for closed loop fuel control). A bad ECT (Electronic coolant temperature sensor). The part cost $24.00 @ Autozone. Looks like I have a little work to do this weekend.
Thanks everyone for the help.
I was having problems with my transmission not shifting into O/D.
I took the advice to disconnect the battery and pull the ECU fuse. I did this and waited for 1hr to reconnect everything. I drove the car and after about 2mi. the CEL came on again. Althought the CEL came on, the transmission shifted beautifully into overdrive. This was great. I was still a little concerned about the CEL and wondered what the code was. So I took somemore advice and went to Autozone today and had the code checked.
The code was P0125 (Insufficient coolant temperature for closed loop fuel control). A bad ECT (Electronic coolant temperature sensor). The part cost $24.00 @ Autozone. Looks like I have a little work to do this weekend.
Thanks everyone for the help.
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First, thank you, everyone for the advice.
I was having problems with my transmission not shifting into O/D.
I took the advice to disconnect the battery and pull the ECU fuse. I did this and waited for 1hr to reconnect everything. I drove the car and after about 2mi. the CEL came on again. Althought the CEL came on, the transmission shifted beautifully into overdrive. This was great. I was still a little concerned about the CEL and wondered what the code was. So I took somemore advice and went to Autozone today and had the code checked.
The code was P0125 (Insufficient coolant temperature for closed loop fuel control). A bad ECT (Electronic coolant temperature sensor). The part cost $24.00 @ Autozone. Looks like I have a little work to do this weekend.
Thanks everyone for the help.
I was having problems with my transmission not shifting into O/D.
I took the advice to disconnect the battery and pull the ECU fuse. I did this and waited for 1hr to reconnect everything. I drove the car and after about 2mi. the CEL came on again. Althought the CEL came on, the transmission shifted beautifully into overdrive. This was great. I was still a little concerned about the CEL and wondered what the code was. So I took somemore advice and went to Autozone today and had the code checked.
The code was P0125 (Insufficient coolant temperature for closed loop fuel control). A bad ECT (Electronic coolant temperature sensor). The part cost $24.00 @ Autozone. Looks like I have a little work to do this weekend.
Thanks everyone for the help.
#21
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CH53...The CTS part costs $24.50 @ autozone. I haven't changed the part out yet but the change looks straight forward. I did buy a Haynes manaul for the Toyota Highlander/lexus RX300/330 that Autozone sells. The replacement directions are striaght forward and shouldn't take too long. Apparently , you need to drain the coolant so it's below the CTS level, remove the CTS with an open end wrench. apply teflon tape to the new CTS part and install. Just thread it back in. The Haynes manual gives you location directions and pictures. I'm probably going to change it out this weekend.
It's not that I'm not worried about the consequences by not changing it right away, but the only real issues are some fuel idle hesitation below 1000rpm. or possible fuel loading in the Catalytic converter. I don't let it idle too much so it doesn't seem like it would be an issue until the weekend. I'll let you know
It's not that I'm not worried about the consequences by not changing it right away, but the only real issues are some fuel idle hesitation below 1000rpm. or possible fuel loading in the Catalytic converter. I don't let it idle too much so it doesn't seem like it would be an issue until the weekend. I'll let you know
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Update...
Update...The CTS was harder to find than it was to install. It is located on the coolant return housing on the left side of the engine (looking from the front of the car) near the end of the return hose. Disconnected the battery terminals, drained the coolant/anti-freeze, disconnected the wiring plug, removed the CTS with a deep 19mm socket. Put teflon tape on the new CTS, reinstalled the CTS, connected the plug and filled the radiator. All done within 1hr. Damn check engine light is still on!!!!!!!!
The CEL code only showed 2 possible problems 1) bad t-stat or 2) Bad CTS. I figured the engine was not over heating and was providing heat, so I eliminated the t-stat.
I phoned a mechanic friend and he said that it's possible the t-stat could be stuck half open which would still give me heat and not over heat the engine.
Looks like I'm changing out the t-stat this weekend.
Still no problems with the Transmission shifting since I originally cleared the CEL.
Will keep you updated.
The CEL code only showed 2 possible problems 1) bad t-stat or 2) Bad CTS. I figured the engine was not over heating and was providing heat, so I eliminated the t-stat.
I phoned a mechanic friend and he said that it's possible the t-stat could be stuck half open which would still give me heat and not over heat the engine.
Looks like I'm changing out the t-stat this weekend.
Still no problems with the Transmission shifting since I originally cleared the CEL.
Will keep you updated.
#24
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Update...The CTS was harder to find than it was to install. It is located on the coolant return housing on the left side of the engine (looking from the front of the car) near the end of the return hose. Disconnected the battery terminals, drained the coolant/anti-freeze, disconnected the wiring plug, removed the CTS with a deep 19mm socket. Put teflon tape on the new CTS, reinstalled the CTS, connected the plug and filled the radiator. All done within 1hr. Damn check engine light is still on!!!!!!!!
The CEL code only showed 2 possible problems 1) bad t-stat or 2) Bad CTS. I figured the engine was not over heating and was providing heat, so I eliminated the t-stat.
I phoned a mechanic friend and he said that it's possible the t-stat could be stuck half open which would still give me heat and not over heat the engine.
Looks like I'm changing out the t-stat this weekend.
Still no problems with the Transmission shifting since I originally cleared the CEL.
Will keep you updated.
The CEL code only showed 2 possible problems 1) bad t-stat or 2) Bad CTS. I figured the engine was not over heating and was providing heat, so I eliminated the t-stat.
I phoned a mechanic friend and he said that it's possible the t-stat could be stuck half open which would still give me heat and not over heat the engine.
Looks like I'm changing out the t-stat this weekend.
Still no problems with the Transmission shifting since I originally cleared the CEL.
Will keep you updated.
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vivawafs
RX - 1st Gen (1999-2003)
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10-26-15 01:11 PM