Can you figure it out?!?! - Subaru WRX Forum
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post #1 of 17 Old 07-07-2014, 01:05 PM Thread Starter
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Arrow Can you figure it out?!?!

So I had a problem a few days ago. And just for fun I want to see what others would have thought it was. I will give no hints but will answer any questions. When answered it has to be exact. If admins don't care I will even look into sending out a free T-shirt for the winner.

Here was my problem:

Driving on a highway in 90 degree weather. Traffic backed up for miles only moving an inch at a time for an hour. Out of nowhere the rpms slowly started to stay a little higher. Around 1200. a few minutes go by and the rpms slightly climb to 2200. and so on over the next ten minutes it is now idling at a staggering 4200. intake temp read 195. Coolant was going from 195 to 208 (as fans kicked on and off).

What is the issue?

05 WRX Wagon - East Coast Swappers Protuned "Stage 4" w/Cobb AP

282 WHP / 247 WTQ
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post #2 of 17 Old 07-07-2014, 02:39 PM
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I'm going to guess it climbed only after those short moving distances where you would put it partially in gear for a few seconds and then back into neutral? If so, there might be nothing wrong with it besides an ECU that was trying to be too clever.

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post #3 of 17 Old 07-07-2014, 02:54 PM Thread Starter
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The RPMs stayed at the high #'s in neutral at a stop for minutes at a time and never dropped. It climbed more and more as I would go an stop. If I rev'd the car at a stop it made it worse

It got scary...

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post #4 of 17 Old 07-07-2014, 03:03 PM
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Cruise control cable. If Im not mistaken there was either a recall or tsb on this. Something heats up and causes expansion which in turn makes the cc cable tighten up and rpm's rise.

I wear xl

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post #5 of 17 Old 07-07-2014, 03:49 PM
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Your car was getting pissed off in traffic.

My blood pressure and temp rises when I'm stuck in stop and go traffic too : )

Jason
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post #6 of 17 Old 07-07-2014, 05:45 PM Thread Starter
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Cruise control cable is correct! But!!! not for the reason you stated lol. When i put everything back together from upgrading the injectors and turbo inlet i guess i didnt tighten the locking nuts on the cable.

I will mock up a tee and post tomorrow.

Thanks for playing this game. Maybe i will come up with some more guessing games or what not and have tees as the prize.
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post #7 of 17 Old 07-07-2014, 05:47 PM Thread Starter
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Quote:
Originally Posted by arcticscythe View Post
Your car was getting pissed off in traffic.

My blood pressure and temp rises when I'm stuck in stop and go traffic too : )
Believe me i was flippin out. My wife was none too happy either
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post #8 of 17 Old 07-07-2014, 05:59 PM
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Quote:
Originally Posted by GSMNZ View Post
Cruise control cable is correct! But!!! not for the reason you stated lol. When i put everything back together from upgrading the injectors and turbo inlet i guess i didnt tighten the locking nuts on the cable.

I will mock up a tee and post tomorrow.

Thanks for playing this game. Maybe i will come up with some more guessing games or what not and have tees as the prize.
Awww shux! I was half right anyway. Great idea for a little forum fun! Glad it was an easy fix.


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post #9 of 17 Old 07-07-2014, 07:26 PM
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I was going to say an idle air control solenoid and/or something on the throttle body is sticking (not returning to its proper place).

Matt
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post #10 of 17 Old 07-07-2014, 08:05 PM Thread Starter
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Quote:
Originally Posted by sleepr View Post
I was going to say an idle air control solenoid and/or something on the throttle body is sticking (not returning to its proper place).
this was actually what i thought it was when i was diagnosing it.
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post #11 of 17 Old 07-09-2014, 09:19 AM
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stupid drive by cable 02-05 WRX...

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post #12 of 17 Old 07-09-2014, 12:07 PM
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This happens to my WRX too in stop and go traffic, so thank you very much for posting it GSMNZ.

I'll share this with my mechanic.

Laszlo - blue '04 WRX
Meet the turbocharged rally-bred Subaru WRX.
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post #13 of 17 Old 07-09-2014, 12:12 PM Thread Starter
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Now this problem might not be your problem. My cable adjustment was out of whack due to my failure to tighten everything. So even the next day when my car was cooled down the RPMs stayed high due to the cable being over tightened. If you think this is your issue the easiest way to see is to completely remove the cable from the TB and see if your RPMs stay high.

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post #14 of 17 Old 07-09-2014, 04:58 PM
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http://www.roadandtrack.com/rt-archi...eza-wrx-models

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post #15 of 17 Old 07-10-2014, 08:35 AM
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Nice find, Adair.
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