1st timer

Today my car was reving at around 2k rpms,i unplugged the map sensor and the revs went just below 1k rpms. What does this mean?

01tl4tl

does this mean you fixed the water pump and this is an unrelated issue?

or have you overheated the engine enough times that its starting to sieze??

01tl4tl

there have been some recent failures of TPS throttle position sensor and required TB replacement

1st timer

It overheated once 3-4 notches before red,the other 2 times just 2-3 notches above normal. Yeah this a separate issue. I replaced the Map sensor and the idle is back to normal. The only things left to do are,timing belt water pump,rear main seal,ball joint,valve adjustment and clean the iacv.

1st timer

why replace the TB and not the sensor?

1st timer

The overheating and erratic rpm were caused by faulty temp sensor.

01tl4tl

I dont recall if it was entire tb or sensor was able to be replaced in other cases,
Im getting old- memory full

How much was your part and where does it go?- for the next person trying to figure it out

acurabum

1er timer : What temp sensor are you talking about ? And where is it ?

1st timer

i'll take pics and post them later.Part cost me 28$.

1st timer

here you go,it's number 15 on the diagram.

acurabum

So it's your coolant temp. sensor that cause the erratic RPM in your 99TL ? My cousin 99 Tl got the same problem with Rpm going at 3500rpm at stop when engine and outside temp is hot .