fleck
New Member
- Joined
- Sep 22, 2008
- Messages
- 359
- Reaction score
- 2
- Points
- 0
- Location
- Florida
- Vehicle Year
- 1994
- Make / Model
- Mazda
- Engine Size
- 3.0
- Transmission
- Manual
So ever since I Sea Foamed the truck she seems to be running a whole lot better and like I said before basically ripping through the higher RPM range like it's none of your business. But I have noticed something strange happening that I hadn't quite noticed before.
First, when idling, the tach 'bounces' or 'spikes' up just a tiny bit real quick, sometimes it'll stick a little and sometimes it'll drop right back immediately. It doesn't feel like this is what the engine itself is doing, but with a spike of only like 50 or 100 RPMs it makes sense that I wouldn't notice. I was wondering if this could mean that my IAC valve has always been clogged up and is now showing signs of being bad.
Second, it seems to hop between RPMs in the high range, like it will seem to jump from 3.8K to 4.2K then hop right to 4.8K and it will stick at 5K for a while before it opens up beyond 5. The only part of this that is noticeable while driving is the stick at 5K, it takes a couple of seconds to rip up to open throttle once it's there. I have no idea if this could be a bad TPS issue, hopefully not a bad cam sensor unless those just keep the truck from running.
Any help/ideas would be appreciated.
First, when idling, the tach 'bounces' or 'spikes' up just a tiny bit real quick, sometimes it'll stick a little and sometimes it'll drop right back immediately. It doesn't feel like this is what the engine itself is doing, but with a spike of only like 50 or 100 RPMs it makes sense that I wouldn't notice. I was wondering if this could mean that my IAC valve has always been clogged up and is now showing signs of being bad.
Second, it seems to hop between RPMs in the high range, like it will seem to jump from 3.8K to 4.2K then hop right to 4.8K and it will stick at 5K for a while before it opens up beyond 5. The only part of this that is noticeable while driving is the stick at 5K, it takes a couple of seconds to rip up to open throttle once it's there. I have no idea if this could be a bad TPS issue, hopefully not a bad cam sensor unless those just keep the truck from running.
Any help/ideas would be appreciated.