My car is doing something really wierd after 30mins of drivi

Juans_93_MX3 · Post by **Juans_93_MX3** » May 14th, 2006, 8:00 pm

It seems like the throttle body cable or something gets stuck a little and leaves the car reving at 2,300RPMs when driving (I notice 2.3k RPMs when I put it in Nuetral).
I wont have to press the gas and the car will just accelerate by its self slowly.
In order to stop this I have to put my foot underneath the pedal and push the pedal up to put it back to normal but even then, when I hit the pedal down again to start accelrating it gets stuck again

How should I fix this?

ruthless_mx3 · Post by **ruthless_mx3** » May 14th, 2006, 9:20 pm

yeah what he ^ said

mine does same thing, but mine will also randomly fluctuate the rpms at idle between about 600-1700rpm. Revs up revs down up down and so on. The only way to get it to stop, which still doesn't always work, is to rev it quickly to round 7000rpm. Not something I want to have to keep doing and besides you look like a moron when your sitting next to a minivan at a light and your reving like you want a race.

I am assuming it may be because I have kl31 cammed klze with millenia manifold and TB, stock k8 air meter, and kl31ecu, and crappy intake.
I would like to do the megasquirt's full control setup to eliminate ecu all together. I missed the BulkBuy on probetalk does anyone know where to get the setup that comes with the maps already set close to whatever mods you may currently have?

Bochek · Post by **Bochek** » May 14th, 2006, 10:23 pm

your tps is out of adjustment, look in the faq on how to adjust it, my car does this too, it the first thing im doing next weekend.

Bochek

Juans_93_MX3 · Post by **Juans_93_MX3** » May 14th, 2006, 11:11 pm

wow, just read the faq, I didnt really understand much of it
Where is the Throttle Positioning Sensor at? How does it look like?

I dont understand what he means by:

Insert .006" (0.15mm) feeler gauge between the throttle stop screw and throttle lever

Throttle stop screw and throttle lever? Whats that?
What does he mean by continuity?

Bochek · Post by **Bochek** » May 15th, 2006, 7:27 am

Juans_93_MX3 wrote:wow, just read the faq, I didnt really understand much of it
Where is the Throttle Positioning Sensor at? How does it look like?

I dont understand what he means by:
Insert .006" (0.15mm) feeler gauge between the throttle stop screw and throttle lever
Throttle stop screw and throttle lever? Whats that?
What does he mean by continuity?

by the sounds of things, you eather need to find another mx'r that knows how to do them, or print out the faq and take it to your mechanic and have him do it.

Bochek

sexy_mx3 · Post by **sexy_mx3** » May 15th, 2006, 8:34 am

mine does this too, I was also advsd by someone that it could have something to do with the oxygeon sensor and the air flow and what not...??

Does that make sense to anyone as well?

Spinkx79 · Post by **Spinkx79** » May 15th, 2006, 8:53 am

Mine did the same thing last summer (only when hot though) i took off the Throttlebody and cleaned all the brown gummy crap out of it and it went away.

g.l

Juans_93_MX3 · Post by **Juans_93_MX3** » May 15th, 2006, 10:02 pm

fuckn MX3 is nothing but problems
If I try fixing this myself, am I risking messing something up?

Rick Johnson · Post by **Rick Johnson** » May 15th, 2006, 10:46 pm

It's not TPS, or o2's or anything like that it's just the return springs suck on the throttle plate especially when hot. Clean the gunk out with throttle body cleaner and it will help.

ruthless_mx3 · Post by **ruthless_mx3** » May 16th, 2006, 10:43 am

what about the VAF? How important is it to have the JE50 VAF. I've heard about it but there hasn't really been any discussions about it. I've finally reallized that the closest matching ecu for the curved neck manifold is the domestic mx6/pgt ecu. Noone has really said much about VAF though.
If the TPS was off wouldn't it be off all the time, always causing wrong/sparatic idle, not just after driving for a while?

Juans_93_MX3 · Post by **Juans_93_MX3** » May 17th, 2006, 9:49 pm

Ok, I guess I will try cleaning the TB
But say its the TPS and I try to fix it myself, do I risk messing osmething up?

Oh yeah, can someone please answere my questions I had about what that guy meant on the FAQ?

Custom_V6_Limited_SE · May 18th, 2006, 12:06 am

Juans_93_MX3 wrote:It seems like the throttle body cable or something gets stuck a little and leaves the car reving at 2,300RPMs when driving (I notice 2.3k RPMs when I put it in Nuetral).
I wont have to press the gas and the car will just accelerate by its self slowly.
In order to stop this I have to put my foot underneath the pedal and push the pedal up to put it back to normal but even then, when I hit the pedal down again to start accelrating it gets stuck again

How should I fix this?

Correct me if I'm wrong, but if pulling the accellerator pedal back had any effect on the car wouldn't that mean that the throttle cable is adjusted too tight? (Or that there is a bad spring)

ruthless_mx3 · Post by **ruthless_mx3** » May 18th, 2006, 1:19 am

I noticed the cable comes in at a weird angle at the throttle body and also it is as if the cable is almost too long. I also have to pull my pedal back it usually fixes the problem.

BornSticky · Post by **BornSticky** » May 18th, 2006, 1:28 am

put some dry grafite in the clutch line it could be catching mine used to do it where you have to pull it up with your foot till i did that

Juans_93_MX3 · Post by **Juans_93_MX3** » May 19th, 2006, 11:51 am

I guess I will just remove the TB tommorrow
Last time I tried (didnt have much time) the acceleration cable spring thing by the TB would not get off. How do I remove that part (I think its called the throttle lever. The thing with the acceleration cable wrapped around it)? I took out the bolt by it, are there any left or do I just try my hardest and pull it off the throttle body? I removed a TB on a 5.0 Mustang before, this one is a tough one.

Where is the Throttle Positioning Sensor at?
How does it look like?

I dont understand what this means by:

Insert .006" (0.15mm) feeler gauge between the throttle stop screw and throttle lever

I know what a feeler gauge is, but what does he mean by "throttle stop screw and trottle lever"?

MX-3.com

My car is doing something really wierd after 30mins of drivi

My car is doing something really wierd after 30mins of drivi

Re: My car is doing something really wierd after 30mins of d