compound problems looking for input

[86notch]

car overheated and I thought it was the thermostate I changed it and filled the system back up and all was good for around three thounsand miles then it overheated again.I found at this time the fan was not running when the car was hot unless the air was on,I figured this was the temp switch so I change the same and this seemed to fix the fan.I was out for the test drive and noticed the air was not working anymore then when I pulled in the drive the check engine lite came on.The next morning when I went to start the car it acted as if it was loosing fuel pressure,it was hard cranking and would not idle under 2000 rpm untill warm.I pulled the codes from the car and came up with the cylinder head temp voltage was low.Never have had this code before any help appr.Thanks Chad:shake:

[BigCars4Ever]

Is your water pump siezed? Loosen the belt and try to turn by hand. It is possible you damaged the head gasket but I thought these cars had failsafe managment.

[86notch]

Water pump seams to be fine I have thought of the headgasket but thught it strang on the way it will run fine for up to 3000 miles before heating problems again.I think it might just have been to defrent problems that have come back to back.One qwick question the 2 sensors that are in the crossover tube are they the same or are they defrent as far as replacing them?thanks Chad

[Zack]

Water pump seams to be fine I have thought of the headgasket but thught it strang on the way it will run fine for up to 3000 miles before heating problems again.I think it might just have been to defrent problems that have come back to back.One qwick question the 2 sensors that are in the crossover tube are they the same or are they defrent as far as replacing them?thanks Chad

One is for the PCM and the other is for the dash gauge.
Do a search on burping the cooling system, as i believe this is your problem.
FYI, the Marauder does not have a Cylinder Head Temp Gauge, so there can be no voltage associated with it or that code you pulled.

[Stangracer89]

The two sensors on the crossover tube, as you are standing in front of the engine, are (left) Fan trigger and (right) Gage temp sensor. The one on the (right) cly head is for the PCM head temp sensor. I had similar problems right after I bought mine late last year. Burp the cooling system and do not let it overheat. The aluminum hates it. The guy who owned mine before had overheated bad and warped the heads. 4K to repair.

[86notch]

Thanks Zack,I have been looking at the forms and have seen the debate on wether or not there is a cht sensor or not and I just got of the phone with the parts guy at ford who tried to say it was in the head as the guy had said in a previous post which hethen stated was not so.I think I found my problem with the over heating with the fan not coming on unless the ac was on.The only reason I asked about the code is that is what the code reader pulled.The air is now not working and the car is hard to start and wont idle below 2000 rpm untill it warms up.It will spit and sputter untill you break 2000rpm mark,also the ac clutch is not ingaging so it is not getting signal to do so I gess.The car runs fine after it warms up and I cant get it to over heat since I changed the tempature switch.I am at work all wek and just trying to get some insight before I work on it again this weekend.Will have to chase wiring for ac I gess.ThanksChad

[MitchB]

One is for the PCM and the other is for the dash gauge.
Do a search on burping the cooling system, as i believe this is your problem.
FYI, the Marauder does not have a Cylinder Head Temp Gauge, so there can be no voltage associated with it or that code you pulled.

In the Ford Powertrain Control and Emissions Diagnosis Manual for both 2003 and 2004, there is a referenced in-range expected value for CHT on PCM pin 66- which is the cylinder head temperature sensor. I do not know where the CHT sensor is located on the Marauder.

FYI - the factory Marauder PCM calibration all years uses failsafe cooling. CHT is the main input for this function. The diagnostic code he pulled is a legitimate DTC and should be followed up with a troubleshoot and possible corrective action. This DTC may or may not be related to his cooling problems.

Posting accurate information to others is paramount in any discussion. If you do not know something as fact, please do not offer advice.

Mitch

[86notch]

so the sensor on the right head if looking from the front of the car is the cht sensor i thought that was a knock sensor will run part number check in the am.The fail safe thing makes sense because the fan will run now even with the air off and the temp switch unpluged,I could also see where the other problems I am having would be incorparated in the fail safe mode I will let you know what I figure out thanks all.:(

[Zack]

In the Ford Powertrain Control and Emissions Diagnosis Manual for both 2003 and 2004, there is a referenced in-range expected value for CHT on PCM pin 66- which is the cylinder head temperature sensor. I do not know where the CHT sensor is located on the Marauder.

FYI - the factory Marauder PCM calibration all years uses failsafe cooling. CHT is the main input for this function. The diagnostic code he pulled is a legitimate DTC and should be followed up with a troubleshoot and possible corrective action. This DTC may or may not be related to his cooling problems.

Posting accurate information to others is paramount in any discussion. If you do not know something as fact, please do not offer advice.

Mitch

There is no Cylinder Head temp sensor on a Marauder.
Thats all I have to add to this conversation!

[86notch]

Zack you are correct thank you for making me ? it and serch for more info
MARAUDER ONLY
Note: Marauder Only - An ECT (Engine Coolant Temperature) sensor is used in place of the CHT sensor. However, internal PCM logic for DTCs and PIDs still references the ECT sensor as a CHT sensor. The ECT sensor is located in the water crossover near the passenger side cylinder head. During this pinpoint please reference the ECT sensor/circuit when asked to disconnect, measure or service the CHT sensor or circuit. :banana2:My problems I think are now from the sensor I replaced is the wrong one makes sense.Chad

[86notch]

Qwick update I got everything working great a special thankd to Dennis at Reinhart performance for taking time to talk to me and answer ?,s even though I had not spent any money with him.Class act and you can be sure we will use you when we start playing with this car.Just for your info if you get the code I got it is from the sensor on the passenger side of the cooling tube that send this to the computer not sure how but the computer reads it two defernt ways from what the ford manual says.The problem is that when you got to the dealer to get this part the book shows up a sensor that is wrong and if your dealer is not knowledgable about this it is all they show.I called Dennis and he gave me a number for a guy at a flordia dealer that when I called he looked up the sensor and gave me the same part number. I told him this was wrong and he asked if the sensor I needed was square with square termanels,I told him yes they where and he said that he knew what I needed and gave me part number f5az-12a648-ab this is the right part.He said the listing that they have on ford parts is wrong.Thanks a million.Chad