Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN









1998 Volvo S90 revving issue


  Email This Post



anash715
New User

Aug 5, 2012, 10:22 PM

Post #1 of 4 (792 views)
Shortcut
1998 Volvo S90 revving issue Sign In

So yesterday morning when I was leaving for work when I started my car it just started revving up to about 3500rpm it did it a few more times and then stopped and now it starts fine but when I tap the gas pedal in park it revs to about 4000rpms on its own and drops. Could to be my TPS or maybe the MAF


Discretesignals
Veteran / Moderator
Discretesignals profile image

Aug 5, 2012, 10:30 PM

Post #2 of 4 (781 views)
Shortcut
Re: 1998 Volvo S90 revving issue [In reply to] Sign In

Not sure without testing.

The idle speed is determined by the engine computer based on readings it gets from the engine coolant temperature sensor, TPS, engine speed, pressure switch signals, etc. All those things would have to monitored along with the how the PCM is controlling the idle air control motor to give you an idea what is going on and where to look for the problem.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


anash715
New User

Aug 5, 2012, 10:33 PM

Post #3 of 4 (774 views)
Shortcut
Re: 1998 Volvo S90 revving issue [In reply to] Sign In

I'm taking it to the mechanics in the morning but right now I unplugged the battery hoping that reseting the computer could fix the problem


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 6, 2012, 6:20 AM

Post #4 of 4 (729 views)
Shortcut
Re: 1998 Volvo S90 revving issue [In reply to] Sign In


Quote
I'm taking it to the mechanics in the morning but right now I unplugged the battery hoping that reseting the computer could fix the problem


So when you arrive at the mechanics he has to send you away because you already erased all the valuable diagnostic info from the computer. You need to decide who is fixing this car, you or them and them stick with it because you don't want to mess with it yourself and then ask a mechanic to look at it. He won't be real happy about that or able to help much.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.





Advertising


  Email This Post
 
 






Latest Forum Post

I apologize I have not got a lot of time in it so far, so I do not have a lot of...


I have a 1992 ford ranger 3.0l v6 5 speed. today i ran out of gas and when i got...


Hello I have a 1993 Toyota Corolla w/1.8L and 3 sp +overdrive tranny. I took it ...


2008 Nissan Sentra 2.0 50000 Miles The trunk wouldn't open neither with the rem...


Hey people, Just as soon as I've got rid of one car and got another, I've got a...


on a 1998 Chrysler cirrus the heater blows warm thru the vents. When u turn it o...


Feed Button






Automotive Forum Categories
AC Auto Repair
Auto Body Repair
Auto Insurance
Automotive Repair
Automotive Wiring
Automotive World
Brake Systems
Car Care Tips
Car Racing
Car Shows and Events
Car Stereo Repair
Car Troubleshooting
Engine and Car Noises
Engine Fault Codes
Engine Troubleshooting
Exhaust System Repair
Gasoline and Motor Oils
General Discussions
Motor Vehicle Inspection
Motorcycle ATV Repairs
Motorcycle Body Repair
Motorcycle Clutch Repair
Motorcycle Engine Repair
Motorcycle Repair
Motorcycle Seat Repair
Remote Control Cars
Steering and Suspension
The Bargin Bin
Traffic Ticket Help
Tricks of the Trade
Truck Repair
Truck Repair Advice
Truck Engine Repair
Truck Suspension Repair
Car Forum - Sitemap


Search for (options) Privacy