why does my 92 topaz have an extreme high idle in park when car is warm

joe0256
0

Asked by joe0256 Feb 04, 2010 at 08:39 AM about the 1992 Mercury Topaz

Question type: Maintenance & Repair

1 Answer

diyer4life88
65

I know the question is a year old, but if it helps someone, great!! 99 out of 100 times its the TPS (Throttle Position Sensor)...very typical... Many of my families' Tempo/Topaz's developed the exact same issue at usually around 15 or so years old, idle was good in Drive, but as soon as the car was put in Park, the RPMs would shoot up to 3,000. Scanned the computer for free,(never pay for this, if the garage wants your business, they'll do it for free) or like us we have invested in our own scan tool, which can be had for less than the price of 2 scans at most shops, lol. Installed a new TPS and they all idled like new, not to mention taking the "Check engine" light off! :)

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Mercury Topaz Questions

Mercury Topaz Experts

#1 kbro
kbro
Reputation 70
#2 diyer4life88
diyer4life88
Reputation 60
#3 Racer_X
Racer_X
Reputation 40
View All