Junior Member
New to the group and it looks like you guys know your stuff. I have a 03 MM that has trouble starting but starts. Then it sputters as i press the gas but is okay pass a certain idle. I have replaced the IAC, cleaned the throttle body, cleaned MAF, new filter. Then when i hooked up my obd2 the temperature gauge reads 116 on a 34 degree morning while the gauge on the dash reads low. And when the dash temps reads normal the tablet says 233. Whats going on, any idea what to do?
Sick-Speed play toy
Originally Posted by Roofcris
Did you replace the temp sensor? If not then do it. It will play hell with your cars starting ability.
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Junior Member
Yes replaced that also... even ran a test on it not hooked up read -40 and with it hot wired read 318 so that area is fine.
Supporting Member
The dash gauge doesn't go above the middle until ~235*
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Sick-Speed play toy
Which one did you replace? Drivers side or passenger?
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SOLD 12/31/2021
Cobra short block / ProCharger F1-A / Cog drive upgrade / Manley valves / Brian Tooley Racing valve springs / 80# inj. / -8 fuel line / -6 return / Aeromotive 340 pumps and regulator / 2012 GT500 TR6060 six speed / twin disc clutch / Driveshaft Shop GT500 upgraded CV joint shaft / BA5000 blow thru MAF/ 4.10's / Ford Racing 31 spline set up and Girdle / Metco D.S. safety loop / Stainless Works headers, cats, and everything else out back / ClassGlass hood / Bob's hood strut mod / Hurst line lock / Metco control arms / Addco front and rear sway bars / Monroe severe duty shocks all around / Race concepts rotors / Badgeless grille / 35% tint / FBM's interior LED kit and ambient lighting kit / Pioneer FB700 deck / kenwood speaker 4 Ch. / Rockford Fosgate 10" sub and amp / Kicker 6 X 8's all around / back up cam / bluetooth / Pioneer Xm / 704 RWHP 603 RWTQ tuned by Mo's Speedshop.
Junior Member
Passenger side
T242 - Ricer ricer
According to my 03 Mercury service manual the Passenger side sensor is the ECT (engine coolant temp sensor) and the drivers side is the CHT (cylinder head temp sensor)
If I'm wrong, someone will chime in.
If so, you replaced the wrong one for the issue you have.
Drivers side sends info to PCM.
WLB
BB#1) 1996 ImpalaSS - 16,500 miles - 100% stock
______________________________ ___________
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T242 - Ricer ricer
CHT: Tasca lists p/n 8I3Z6G004-A $29 on Amazon with free shipping.
My research may be in error, your results may vary.
WLB
BB#1) 1996 ImpalaSS - 16,500 miles - 100% stock
______________________________ ___________
BB#2) 2003 Marauder (300a) - 34k miles - Daily Driver
#2912 of 7093
Conceived 8/6/2002
Delivered 9/19/2002
Adopted 8/10/2011
Trilogy 242 - Self Installed 9/9/12 (0-60 5.5 sec)
Pioneer 6x8 Front
Legacy 600w 6x9 Rears
JL 6.5 SubWoofer
K&N CAI
Window tint 50% rear/35% front
FBM CHMSL with Strobe mod 7/1/12
DR Deep Aluminum Trans Pan
Sparta FOMOCO Racing 8.8 Girdle
Mo's Dyno Tune
Gorilla Nuts - The System
Ford Racing 4.10s, 31 spline Cobra carrier & axles 7/1/12
Powder Coat Axle Housing 7/1/12
CME HP Rear Control Arms & Watts Link 7/1/12
______________________________ ________________
Rex "SC Cheesehead" Weinbender 11-14-13
Ed "Baaad GN" Linthicum 8-6-2014
Junior Member
I will go ahead and replace the other one... hopefully that does the trick.
Sick-Speed play toy
FYI the harness ends differ between the two and the output differs as well. I believe what black beasts mentioned is correct. Passenger - gauge / driver - PCM
It’s been a long time however..
I assume this problem started before replacing all of this stuff?
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SOLD 12/31/2021
Cobra short block / ProCharger F1-A / Cog drive upgrade / Manley valves / Brian Tooley Racing valve springs / 80# inj. / -8 fuel line / -6 return / Aeromotive 340 pumps and regulator / 2012 GT500 TR6060 six speed / twin disc clutch / Driveshaft Shop GT500 upgraded CV joint shaft / BA5000 blow thru MAF/ 4.10's / Ford Racing 31 spline set up and Girdle / Metco D.S. safety loop / Stainless Works headers, cats, and everything else out back / ClassGlass hood / Bob's hood strut mod / Hurst line lock / Metco control arms / Addco front and rear sway bars / Monroe severe duty shocks all around / Race concepts rotors / Badgeless grille / 35% tint / FBM's interior LED kit and ambient lighting kit / Pioneer FB700 deck / kenwood speaker 4 Ch. / Rockford Fosgate 10" sub and amp / Kicker 6 X 8's all around / back up cam / bluetooth / Pioneer Xm / 704 RWHP 603 RWTQ tuned by Mo's Speedshop.
Junior Member
Can you guys give me a picture of where this part is. The part i took off isnt matching the part they are giving me at the counter.
Turbo Marauder
As I've always remembered it.....
Driver-Dashboard
Passenger-PCM.
When you unplug the passenger side sensor, the cooling fan comes on. Which verifies I am correct
Turbo Marauder
You will never find a Marauder Sensor at the Parts store.
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