Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #16  
Old 09-16-2017, 04:48 PM
GSF1200S GSF1200S is offline
Wrist Twister
 
Join Date: Jun 2012
Posts: 990
Default Re: New IAC Valve but inconsistent idle RPMs

Quote:
Originally Posted by spry85 View Post
Thanks for all the input Tom, their recommendation didn't make any sense to me either. They claim that they think the cycling is from a worn out clutch in which my reply was then why don't you just change out the clutch instead of the whole compressor and they said well the compressor might be worn out from engaging/disengaging so much that it would be better to just replaced the whole compressor while you're at it. I said alright thanks, grab my keys and left. Haha As far as the pressure readings that you mentioned, I have no clue but I think I'm just gunna invest in some gauges and dig into this myself. I hate that you can trust mechanics anymore, I literally walked away with the feeling like they were just loading there shotgun and shooting from the hip lol


Sent from my iPhone using Tapatalk
Theyre full of it. Never take your vehicle there again. Follow tomw0's advice which is exactly what I would want to see. If the pressures are right, I would be looking at the pressure switches (unlikely) or a worn clutch assembly (much more likely). Usually pressure switches work or dont, but I've seen stranger things.

As for leaks, use refrigerant with uv dye (and only uv dye- no stop leak crap) and borrow a UV light to try and find the leak. You will likely need to evacuate the system, replace the part, have the system vacuumed, then recharge by weight. Recharging by PSI (using gauges) can work, but charging by weight is the right way. When my truck sat for 8 months it slowly leaked pressure until it was short cycling like yours is- I hooked up my hi/low gauges and charged using the cheapest R134a I could get- its still working fine 3 years later. Basically unless the leak is big enough where you're losing all your refrigerant multiple times in a season, generally its more cost effective to just throw a can of R134a at it once a year.
__________________
2002 Ford Ranger XLT Supercab, 2.3L Duratec I4, 5-speed manual, 4.10 gears, ~100,000 miles
Power nothing with air conditioning; crank windows for life!
Throttle cable mod, retained accessory power mod, 2006 thermostat w/resistor mod
Headlight relay harness, Philips xtreme-vision bulbs
P235/75R15 Michelin LTX M/S2s
Reply With Quote
  #17  
Old 09-29-2017, 12:41 PM
Harbor_Handed Harbor_Handed is offline
Buy a Ford
 
Join Date: Dec 2016
Posts: 195
Default Re: New IAC Valve but inconsistent idle RPMs

I'm the OP, just thought I'd update:

My idle RPMs still drop & fluctuate a bit sometimes when I stop, but I found out my AC refrigerant leak is coming from my compressor. A nice mechanic looked at it with yellow glasses and a special light and there was green dye already at the seam of the compressor. He said if it were him, he'd just keep recharging the system whenever it got low instead of paying $800 to have the compressor replaced. I would be fine with that if it were not for the fluctuating idle RPMs which are clearly linked to the AC system.

So? I'm pretty sure I'm going to replace the compressor myself. It's 200 for a new Motorcraft compressor from RockAuto, and then about $100 for vacuum compressor/manifold gauges/PAG oil from Ebay...

ChrisFix has a couple really good videos about replacing AC compressor and pulling vacuum & recharging. Doesn't look all that hard, so I'm thinking I'm going to do it myself, but just haven't pulled the trigger on a new compressor yet.
__________________
2003 Mazda B2300
2.3 L DOHC
4 Cylinder
Automatic Transmission
145,500 miles on Odometer

Reply With Quote
  #18  
Old 09-29-2017, 01:02 PM
spry85 spry85 is offline
Learning to use the forums
 
Join Date: Jul 2017
Posts: 11
Default Re: New IAC Valve but inconsistent idle RPMs

Quote:
Originally Posted by Harbor_Handed View Post
I'm the OP, just thought I'd update:

My idle RPMs still drop & fluctuate a bit sometimes when I stop, but I found out my AC refrigerant leak is coming from my compressor. A nice mechanic looked at it with yellow glasses and a special light and there was green dye already at the seam of the compressor. He said if it were him, he'd just keep recharging the system whenever it got low instead of paying $800 to have the compressor replaced. I would be fine with that if it were not for the fluctuating idle RPMs which are clearly linked to the AC system.

So? I'm pretty sure I'm going to replace the compressor myself. It's 200 for a new Motorcraft compressor from RockAuto, and then about $100 for vacuum compressor/manifold gauges/PAG oil from Ebay...

ChrisFix has a couple really good videos about replacing AC compressor and pulling vacuum & recharging. Doesn't look all that hard, so I'm thinking I'm going to do it myself, but just haven't pulled the trigger on a new compressor yet.


Awesome, canít wait to hear how it goes. FYI, I found a good deal on A/C gauges and vacuum pump combo on Amazon


Sent from my iPhone using Tapatalk
__________________
2003 Ranger XLT Supercab 3.0L 2WD Auto

2014 Harley Davidson ElectraGlide
Reply With Quote
  #19  
Old 10-15-2017, 08:23 AM
Harbor_Handed Harbor_Handed is offline
Buy a Ford
 
Join Date: Dec 2016
Posts: 195
Default Re: New IAC Valve but inconsistent idle RPMs

Just updating my thread to state that I think I solved my dropping/fluctuating idle by lubricating the mechanical part of the IAC valve. Now the idles seem smooth and stable, but I'll know for sure when I drive it more this coming week.
__________________
2003 Mazda B2300
2.3 L DOHC
4 Cylinder
Automatic Transmission
145,500 miles on Odometer

Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Inconsistent Idle jeffrey8164 3.0 Vulcan Tech 5 08-10-2015 08:49 PM
idle rpms and timing tpaint3 3.0 Vulcan Tech 1 04-19-2014 01:44 PM
Rough Idle and Surging RPMs bplturner 3.0 Vulcan Tech 11 11-26-2013 01:19 PM
RPMs sticking/ IAC valve? thebatman 3.0 Vulcan Tech 2 09-18-2013 09:03 AM
97' B4000 inconsistent high idle and and slow de-rev VenomRS4 4.0 SOHC / 4.0 OHV Tech 5 12-18-2012 11:23 AM