Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Ford V6 > 3.8 & 4.2L V6
Sign in using an external account
Register Forgot Password?


Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1 (permalink)  
Old 11-19-2011, 07:06 PM
EVERY DETAIL EVERY DETAIL is offline
New User
 
Join Date: Nov 2011
Posts: 4
EVERY DETAIL is starting off with a positive reputation.
Difficult to Start Engine? Replace the CHT (Cylinder Head Temp Sensor)

I battled a difficult starting problem with my E150 recently. My van would take 10 or more times of attempting to start it before it would actually idle. It would stumble and almost start many times. Once it started it would easily start again without issue. If I let it sit overnight it would have the same issue in the morning. It seemed time or engine temperature related. Many people told me it was my fuel pump, Fuel pressure regulator or fuel filter. Yet, a key-on-key-off testing situation proved to me that it was not a fuel pressure issue.

My issue turned out to be the Cylinder Head Temperature Sensor (CHT). Although I only got the error code P1289 once after many times of clearing the codes and driving more, that's the one that eventually lead me to this sensor. P1289 is "Cylinder Head Temp Sensor High Input". I learned through plenty of troubleshooting and searching that the dash cluster temp gauge gets it's signal from the coolant temp sensor on the thermostat housing. The computer gets it's signal from the CHT. My CHT was malfunctioning and was causing the engine to never start properly. It would take 10+ times to start it properly. The CHT sensor itself is a dealer only part. It was $23 dollars from a local Ford Dealer part number XL3Z 6G004 AA (XL3Z-6G004-AA). When I got back to replace it, I snapped the old one off inside the head. No biggie, because there are about 3+ other tapped holes in the head to screw the new one into. I used a different hole and the engine started on the first shot. This was a really easy job because this was a E150 van and I have direct access to the back of the engine. I imagine it would be sort of a headache on a F150.

I really hope this helps somebody!

Last edited by EVERY DETAIL; 11-19-2011 at 07:08 PM. Reason: Added part number
Reply With Quote
  #2 (permalink)  
Old 10-17-2012, 03:54 PM
mikekp mikekp is offline
New User
 
Join Date: Sep 2012
Posts: 18
mikekp is starting off with a positive reputation.
It did. Your the man.

1999 ford e-150 , I almost burst with joy when I looked and saw 3 other same sized holes threaded for my new CHT, DID NOT want to drill into that cylinder head. WHEWW
Reply With Quote
Old 10-17-2012, 03:54 PM
Reply

Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Ford V6 > 3.8 & 4.2L V6

Tags
2009, 42, 54l, automotive, cht, code, cylinder, engine, f150, ford, head, location, p1289, sensor, sensors, temperature, troubleshooting

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump



All times are GMT -5. The time now is 11:39 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.5.2 ©2010, Crawlability, Inc.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup