What to do before 1200 miles?

[Vendetta]

Hi Kate,

I had the exact same problem - high idle, racing RPM, stalling, etc. etc. just like you describe, and this lasted for a while as the troubleshooting continued.

In the end, all it took was giving a real good cleaning to the part I've circled in this pic. It's some valve that regulates air mixture or some such voodoo about which I know shamefully little. Some gunk builds up in there and the plunger gets caught up. Take that sucker apart, give it an carburetor-cleaner enema, and hopefully you'll be good to go!

Let us know!
-V

[JAMAS]

Hi Kate,

I had the exact same problem - high idle, racing RPM, stalling, etc. etc. just like you describe, and this lasted for a while as the troubleshooting continued.

In the end, all it took was giving a real good cleaning to the part I've circled in this pic. It's some valve that regulates air mixture or some such voodoo about which I know shamefully little. Some gunk builds up in there and the plunger gets caught up. Take that sucker apart, give it an carburetor-cleaner enema, and hopefully you'll be good to go!

Let us know!
-V

Anyone know what that part is and if its inexpensive to just replace?

What are the steps to remove it? (other than the obvious)

[jeeperkate]

Anyone know what that part is and if its inexpensive to just replace?

What are the steps to remove it? (other than the obvious)

The exact questions I was going to ask!

[VX KAT]

Happened upon this when looking for something else...thought I'd post it....
TITLE: Rough Engine Idling or Engine Stalling
It's page 6A-6 in the Workshop manual:
(the nice table format didn't copy into this post...go to the original...)

6A–6 ENGINE MECHANICAL
Rough Engine Idling or Engine Stalling
Condition Possible cause Correction
Trouble in fuel injection system Idle air control valve defective Replace
Throttle shutting off incomplete Correct or replace
Throttle position sensor circuit open
or shorted
Correct or replace
Fuel injector circuits open or shorted Correct or replace
Fuel injectors damaged Replace
Fuel pump relay defective Replace
Mass Air flow (MAF) Sensor circuit
open or poor connections
Correct or replace
MAF Sensor defective Replace
Manifold Absolute Pressure (MAP)
Sensor circuit open or poor
connections
Correct or replace
MAP Sensor defective Replace
Engine Coolant Temperature (ECT)
Sensor circuit open or poor
connections
Correct or replace
ECT Sensor defective Replace
Intake Air Temperature (IAT) sensor
circuit open or poor connections
Correct or replace
IAT sensor defective Replace
Knock Sensor (KS) cable broken or
poor connections
Correct or replace
KS defective Replace
KS Module circuits open or ground Correct or replace
KS Module defective Replace
Vehicle Speed Sensor (VSS) circuit
open or shorted
Correct or replace
VSS defective Replace
Trouble in emission control system Powertrain Control Module defective Replace
Exhaust Gas Recirculation (EGR)
Valve circuit open or poor
connections
Correct or replace
EGR Valve faulty Replace
Canister purge valve circuit open or
poor connections
Correct or replace
Canister purge valve defective Replace
Evaporative Emission Canister
Purge control valve defective
Replace
Trouble in ignition system Refer to “Hard Start”

[VX KAT]

Hi Kate,

I had the exact same problem - high idle, racing RPM, stalling, etc. etc. just like you describe, and this lasted for a while as the troubleshooting continued.

In the end, all it took was giving a real good cleaning to the part I've circled in this pic. It's some valve that regulates air mixture or some such voodoo about which I know shamefully little. Some gunk builds up in there and the plunger gets caught up. Take that sucker apart, give it an carburetor-cleaner enema, and hopefully you'll be good to go!

Let us know!
-V

Idle Air Control (IAC) perhaps? (page 6E-22 in Workshop Manual)

[VXorado]

Idle Air Control (IAC) perhaps? (page 6E-22 in Workshop Manual)

Thats it.

I pulled the IAC a couple years ago and cleaned out all the carbon. Its worth cleaning even if you don't have issues, I was surprised much it was clogged up. I believe its a $30 part if you need to replace it.

[jeeperkate]

Thank you for everyone's help. I am putting in a new IAC and TPS within the next few weeks. I am picking them up tonight. We are also going to stick a code reader on there and see what it comes up with.

PS - The windows are tinted and the pinstripe is removed!

[Vendetta]

Thank you for everyone's help. I am putting in a new IAC and TPS within the next few weeks. I am picking them up tonight. We are also going to stick a code reader on there and see what it comes up with.

PS - The windows are tinted and the pinstripe is removed!

No problem, let us know if it solves the issue! Meanwhile, keep on eye on those revs. Betty might chomp at the bit at red lights or in traffic if she's idling too high. Not good for your brakes, transmission and temperature - or your bumper if she breaks free.

As for the tint and stripe? Pics or it didn't happen.
-V

[jeeperkate]

I just had to get home from work - here they are!

Before:


After - 20% in the rear, the fronts will get 40% once I fix the passenger window: