Rough idle after head gakest replacement - Ranger-Forums - The Ultimate Ford Ranger Resource

Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

Rough idle after head gakest replacement

  #1  
Old 12-04-2018
Kharon's Avatar
Member
Thread Starter
Join Date: Oct 2018
Location: San Antonio
Posts: 29
Rough idle after head gakest replacement

Recently replaced the head gasket on my 2.3L 2008 Ranger it started up fine but when I stop it idles rough and the rpms are going up and down and it also shakes...any ideas ?
 
  #2  
Old 12-04-2018
RF Veteran
iTrader: (1)
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 11,305
A lot of territory on that one, lol.

Warm up the engine and then let it idle
Unplug the 2 wire connector on the IAC Valve, it should then close and RPMs should drop, or engine may even stall, either is GOOD, it means no vacuum leaks
If RPMs stay up then there is a leak somewhere, start checking hoses, maybe something got missed.

I assume the engine runs fine and has normal power when driving?

PCV valve is a pain to get at on this engine, did you change it when doing this work?
 
  #3  
Old 12-04-2018
Kharon's Avatar
Member
Thread Starter
Join Date: Oct 2018
Location: San Antonio
Posts: 29
Head gasket replacement

Originally Posted by RonD View Post
A lot of territory on that one, lol.

Warm up the engine and then let it idle
Unplug the 2 wire connector on the IAC Valve, it should then close and RPMs should drop, or engine may even stall, either is GOOD, it means no vacuum leaks
If RPMs stay up then there is a leak somewhere, start checking hoses, maybe something got missed.

I assume the engine runs fine and has normal power when driving?

PCV valve is a pain to get at on this engine, did you change it when doing this work?
Reply- I only just replaced the gaskets and that was all, when driving it starts off fine but studders a bit and reversing it studders more.
i just did it and the vehicle turned off, what’s the issue?
 

Last edited by Kharon; 12-04-2018 at 03:41 PM. Reason: adding
  #4  
Old 12-04-2018
RF Veteran
iTrader: (1)
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 11,305
So on the highway it is fine?
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
milesc22
General Technical & Electrical
5
11-14-2018 07:19 PM
ChargerOnDavins
2.9L & 3.0L V6 Tech
3
03-23-2015 04:25 PM
whiskeybreath
SOHC - 2.3L & 2.5L Lima Engines
1
11-27-2014 05:06 PM
gwillakers
General Technical & Electrical
2
10-08-2012 01:13 PM
rybread5520
2.9L & 3.0L V6 Tech
3
05-24-2008 11:50 AM


Thread Tools
Search this Thread
Quick Reply: Rough idle after head gakest replacement


Contact Us Sitemap Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.