Monterey Discuss the Mercury Monterey here...

2004 monterey 4.2 Misfire when cold

Old 07-09-2013, 08:53 PM
Junior Member
Thread Starter
Join Date: Jul 2013
Posts: 1
Default 2004 monterey 4.2 Misfire when cold

I have a 2004 Monterey with the 4.2 Right after we just got it we noticed that after it has sat for awhile, overnight, it will misfire till you get it warmed up a little bit. That takes about 2 miles down the road. I just changed all the plugs, coil, plug wires, and put in a new fuel filter and that did not solve the problem. After it has warmed up, it is fine. the plugs I took out did not look bad. The van only has 54,000 miles on it. We did not notice it when we bought it, as it was always warm when we drove it. It does not throw a code or have any light on at all that would lead me to what to check. I do notice when I am driving and it misses, I hear what sounds like a "HISS" or "TISS" maybe and it sounds like it is coming from the passenger side dash up near the firewall???? I am at a loss, if anyone has any ideas I would love to hear them. Thanks!
Old 03-14-2014, 05:12 PM
Junior Member
Join Date: Mar 2014
Posts: 2

Well, I just had a similar problem on my Mom's Monterey, only the car would completely die out sometimes. The mechanic said it was a crankshaft position sensor, which makes sense because I had the same problem in my jeep.

It never threw a code in my jeep or in my mom's van either. In either regard, it's a relatively cheap solution to check. It's a 50 dollar part, and shouldn't take very long to get the old one off and the new one on.

I do have a question though (sorry to thread jack, but it goes along with your question). Do you need to replace the camshaft synchronizer as well, or is it usually just the sensor?
Related Topics
Thread Starter
Last Post
New Member Area
06-12-2014 06:38 PM
04-12-2011 08:25 PM
03-04-2008 01:11 PM
01-08-2007 02:07 PM

Thread Tools
Search this Thread
Quick Reply: 2004 monterey 4.2 Misfire when cold

Contact Us - Archive - 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 and affiliated sites.