runs rough when cold

Reply Subscribe

Thread Tools

Search this Thread

Nov 28, 2006 | 07:44 PM

unger316

Thread Starter

Senior User

Joined: Jun 2006

Posts: 157

Likes: 0

runs rough when cold

hey guys

heres my problem, my truck runs rough and has no power when its cold, but once it starts to get warm it runs fine. it seems to only happen when its cold outside, if its 45 or warmer outisde it runs fine.

thanks, chris unger

87 f150 302 4x4 a4od

Nov 28, 2006 | 10:22 PM

luke245

Junior User

Joined: Oct 2006

Posts: 55

Likes: 0

From: Kansas

I have the same problem. It still runs but it is skippy when just sitting in park and skippy when I put gas on it. Once it gets warmed up though it runs fine.

Dec 1, 2006 | 10:39 PM

unger316

Thread Starter

Senior User

Joined: Jun 2006

Posts: 157

Likes: 0

anyone got any ideas

Dec 2, 2006 | 04:17 AM

tim73

Mountain Pass

Joined: Feb 2003

Posts: 136

Likes: 3

Does it appear to run rich? Check your Engine Coolant Temp Sensor(It controls how much fuel the engine burns until it is warm enough for the O2 sensor to take over)

Dec 2, 2006 | 08:29 AM

unger316

Thread Starter

Senior User

Joined: Jun 2006

Posts: 157

Likes: 0

Quote:

Originally Posted by tim73

Does it appear to run rich? Check your Engine Coolant Temp Sensor(It controls how much fuel the engine burns until it is warm enough for the O2 sensor to take over)

my engine temp gauge barely gets above the normal area and i know thats not right. Could that be my problem. the engine isn't getting warm enough?? but that doesn't make sense. i think its the engine temp sensor.

Dec 2, 2006 | 01:11 PM

95Ford4x4

Elder User

Joined: Nov 2006

Posts: 614

Likes: 0

From: Pensacola, FL

replace your engine temp sensor, the computer uses that information to determine how much fuel to feed the motor. some engines have more than one so make sure you replace them all.

Dec 2, 2006 | 03:03 PM

Mountianeer

Freshman User

Joined: Oct 2006

Posts: 30

Likes: 0

From: Cincinnati, Ohio

Sorry to jump in like this but I may have a similar problem in my 96 F150 (302 FI). Can someone post where all the possible engine temp. sensors are.

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Verdad Gallardo

10 Best Ford Truck Engines We Miss the Most!

Joe Kucinski

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Brett Foote

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Michael S. Palmer

10 Most Surprising 2026 Ford Truck Features!

Joe Kucinski

Top 10 Ford Trucks Coming to Mecum Indy 2026

Brett Foote

5 Best / 5 Worst Ford Truck Wheels of All Time

Joe Kucinski

Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Joe Kucinski

Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Michael S. Palmer

The Best F-150 Deal of Every Trim Level (XL through Raptor)

Joe Kucinski

Dec 3, 2006 | 12:26 AM

Tdvjensen

Senior User

Joined: Apr 2003

Posts: 448

Likes: 0

From: Edmonton, AB Canada

The engine coolant temp sensor is located in a tee on the front of the intake directly below the throttle body. The engine coolant temp switch, which runs the gauge, is located on the driverside front part of the head with a one wire hook up. If your the guage isnt coming up and the motor feels fairly cool to the touch and not warm or hot to the touch, then change the thermostate before you start buying more expensive parts like sensors. As for it running better when warm outside then try looking at the air charge temp sensor which is located on the intake to the driverside, right between the front two fuel injectors. www.fordfuelinjection.com goes through how to check them with a voltmeter. The truck relies on both of these sensors to determine fuel mixture during the warm up portion of run time.