cheesebox

I just went out for a drive now that I got it working!!! YAY. anyway Im driving along and all is well, then BEEEEEEEEEEEEEEEP so I get off the gas and put it in neutral... 3k rpm. so I put it in gear and it drops to 2000 rpm for the gear, then accelerates me up to 3k rpm where it holds 3k rpm steady.. It seems like its constantly boosting too. though the gauge shows nothing. Now I 3k rpm my way home and shut her down.

Turn it back on... 3k rpm. so I closely inspect the engine bay and the Vac line running off the compressor leading to the boost controller then to the wastegate blew off. I fix it and put a nice new clamp on. Start the car... 3k rpm. So I check the slack in my throttle cable and its WAY more then enough, just for ***** and giggles I take my throttle cable OFF, start it up. 3k rpm. please please help me! I want to go driving again, to find all my other mysterious problems!

dawicka2

Where in ny are you? Did you try adjusting the idle set screw on "it". I dont think i have ever seen the word "it" printed so much. hehehe

john ny

cheesebox

im not in NY right now, im down in herndon VA, I will be back in ny on the 25th if my car can make it. I really have no idea whats going on with this damn thing, this 3k rpm dealie is not letting up.

Sideo

On my 3rd gen the idle set screw fell off and jammed the throttle body open and the car would rev to 5k. you said there is alot of slack in your cable so it is possible the TB is jammed open like what happend to me.

NCross

iTrader: (18)

fast idle cam is jammed.

SpeedOfLife

iTrader: (16)

mmm, good idea. Pull it along with your secondary throttle plates and learn finer throttle control to manage the change, you'll be better for it.

Sideways7

iTrader: (7)

Actually, I just got my car back together and it was revving at 3k RPM. The only thing I had changed, really, was getting the BAC working again. So I pinched off the hose going to the BAC valve, and it went back to a normal idle. This was just last night, so I'm not quite sure why it did this yet, but its something to think about.

Also, I didn't think the fast idle cam boosted the idle that high, I thought it only boosted it to 1.5k or so. The 3k idle is the accelerated warm-up system, and I honestly am not sure what actually boosts the idle. Once I figure it out, I will post it up.

dazed01

On mine the thermowax went bad and it would idle at 3k. When you bringing your 7 out man? I've been driving mine every day, leaving the evo parked int ehdriveway. Tho since working at mazda driving this thing I spend almost a carpayment on it every month lol.

cheesebox

Well, it was not doing it untill I went for a long drive. Then the coolant beep started going off. Then it started doing the 3k idle thing gay. I will check my throttle screw, I really REALLY dont want to get rid of thermowax and all that, I want to auto-cross tomorrow and hate to start another god damn project. I dont have a BAC valve. if my fast idle cam is jammed can I spray abuncha PB blaster at my throttle boddy and wack it with a hammer a few times or something, I am getting awfully sick of pulling this car apart.

juice22

iTrader: (4)

Same here sort of. My thermowax passage was clogged causing it to idle between 2-3k. Took off the tb and thermowax and unclogged it. Now its fine.

Force Fed

I just zip-tied the fast idle cam up on mine where it never interferes, works fine just have to keep it running for a minute or two before it will idle on it's own. My engine has low compression though too, so yours may just crank up and idle normally.

cheesebox

which one is the fast idle cam, Can I clean the thermowax passage without pulling the TB, I am getting really really sick of pulling my UIM and my small snap-on torque wrench that I actually trust is on loan

Sideways7

iTrader: (7)

The thermowax valve is screwed onto the TB, so you should be able to take it off without removing the TB. At least there aren't any gaskets to remove with the TB. I can get it off and back on in less than 5 minutes now.

As for me, I don't have the thermovalve on mine, so that can't be my problem.



Dazed - I'll bring mine out as soon as I get it running well, hopefully in the next few days. It has been down for ever until I rebuilt the engine this winter. Once it got got again, the coolant temps were higher than I wanted so I tore it down and put in a new all-brass rad. Hopefully that will help me out with the temps some.

dazed01

The thermowax is a bitch to get off without taking the throttle body off. I took it (throttlebody) off and it made too easy to replace the thermowax and set the fast idle cam