1995 mustang RPM issues?
I own a 1995 v6 ford mustang. When I'm driving some of the times it's a bit normal, but lately at slow speeds or when stopped my RPMs will rise and drop. When stopped it rises and Lowers pretty obviously especially as I slow down to a complete stop, you can hear it as well. When driving at slow speeds any where up to about 45 or 50 it also does this but not as noticabally and normally when I give it gas. If I give it more gas it definitely runs a little smoother but still does it.
Verbrenne das Stück und kaufe einen Volkswagen. Immerhin wurde es von mir erfunden.
Moostang is kil
RIP moostang </3
Does it happen when you have the brakes on? Check the vacuum booster on the power brakes for a vacuum leak.
Check for air leaks on the induction system.
Hi so what about engine wear with such an old engine. This is now a very old car over 22 years old. Design to last just 8 years or 100k miles.
Check for vacuum or air intake duct leaks or possibly a bad TPS. Vacuum leaks or air intake leaks can cause erratic idle speeds or erratic rpm's due to too much unmetered air entering the system that the PCM/computer can't adjust for properly to maintain proper fuel trims. Test the TPS for smooth voltage readings as you slowly open the throttle from closed to full open… If you get erratic readings at some points, replace the TPS… Common issue that the sensor may develop wear spots or carbon buildup in some areas of high use such as closed throttle or low speed throttle angle which can give erratic voltage readings to the PCM as to actual throttle angle which then alters fuel trims improperly and results in high/low rpm's or erratic idle speeds. Could also be due to varying fuel pressure issues… Test for proper fuel pressure… Bad pressure regulator, clogged injectors, clogged filter, etc. Check the primary O2 sensors as well… A lazy/bad sensor can trick the computer into altering fuel trims improperly which can cause erratic idle speeds or power lags.
Based on your description, it sounds more like a bad TPS but could be other issues that need further testing.
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