Question about 1999 Cadillac Seville

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How to replace IAT sensor on a 1999 Cadillac Deville?

The service engine light came on and the OBD told me that is the IAT sensor, how to fix the problem, maybe does not need to be replace, how do I check?

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  • Anonymous Mar 26, 2014

    INDICATED THE CAMSHAFT AND CRANKSHAFT SENSORS NEEDED REPLACEMENT DID THAT THEN READ CATLYIC THRESHOLD THEN LIGHT WENT OFF NOW ON AGAIN NOW SAYS SENSORS NEED TO BE REPLACED NOT POSSIBLE ALREADY DID. WHAT ELSE COULD IT BE

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Go to Autozone.com type in IAT sensor or MAF sensor for your vehicle, then click on vehicle repair guides, that gives you some information that could help you more.

Posted on Feb 10, 2009

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2 Answers

Tying to find crank sensor for 2002 Cadillac Seville std 4.6 liter


This answer covers 1999-2005 Cadillac Deville, Eldorado & Seville.
Example Engine:
2002 Cadillac Seville STS 4.6L SFI DOHC HO 8cyl.

This engine has (2) Crankshaft Position (CKP) Sensors: the Upper sensor is CKP sensor B, and the lower sensor is CKP sensor A (this is included for the OBD-II DTC codes - P0385 references Sensor B = upper CKP sensor, whereas P0335 references the lower CKP sensor (sensor A)).

Both crankshaft position sensors are located in the front of the engine just above the oil filter adapter. To access both CKP sensors, jack up vehicle on the passenger side, remove the oil filter, and the oil filter adapter, including the Engine Oil Pressure (EOP) switch. See illustration.
tying-find-crank-sensor-2002-cadillac-3hcuyyaerdphtgzyedxwn2k0-1-0.jpg
The ARROW points toward Front of Car.
1. Upper Crankshaft Position Sensor (B).
2. Lower Crankshaft Position Sensor (A)
3. Engine Oil Pressure (EOP) switch
4. Engine Oil Level switch
The Oil Filter is the can-type object below the oil filter adapter, which includes the EOP switch. Recommend: remove oil filter with an oil filter socket/strap wrench, since it's close to the oil pan.

Aug 21, 2014 | Cars & Trucks

1 Answer

Hi! My 1999 Cadillac Deville for about 2 weeks started messaging low refrig-ac-off. Check engine light on!.


When you change your oil is up to you,you set the
months & miles you go. Any car with a reminder
for oil is just a gadget

You were told that your low on a/c refrigerant by the
message

Now the check light related or not has to be addressed,
by checking for codes & diagnosing the effected system

Your a/c system needs repair,not added to, only to leak out
& polute the atmosphere

Nov 14, 2012 | 1999 Cadillac DeVille

1 Answer

I need to reset check engine dash light in 2004 deville. dealer has told me what is going on and i choose not to repair at this time. how do i make the check engine light in dash


If the check engine light is on, one of the sensors on the engine are not sending the computer the right signal. And most of the time the sensor is bad. And that is probably what is wrong with your car. So until the sensor is replaced, then you can not reset the check engine light.

Dec 15, 2010 | 2004 Cadillac Deville

1 Answer

My service engine light is on, took it was put on the machine and came back with the code po741 which was said to be a transmission problem. Took it to a transmission shop and was told that my...


Subject:
Service Engine Soon (SES) Light On, Diagnostic Trouble Code (DTC) P0741, Torque Converter Clutch (TCC) Excessive Slip, Transaxle Chuggle, Slip/Surge (Inspect/Replace Internal Transaxle Components) #04-07-30-034 - (08/06/2004)
Models:
1998-2002 Cadillac Eldorado
1998-2004 Cadillac Seville
1999-2004 Cadillac DeVille
2000-2003 Oldsmobile Aurora
there is a write up on this about 3/4 page down.

http://www.cadillacforums.com/forums/cadillac-forum/t-107360.html

Oct 25, 2010 | 2003 Cadillac Deville

1 Answer

How do I reset service engine light on 1999 cadillac deville


1996 on up OBD II systems require a scanner with the 'clear code' feature to reset the SES light.

Otherwise, one can cycle starting and stopping the engine 30 or 40 times to clear the SES light. This is not recommended, though, as it takes a long time.

Jun 03, 2010 | 1999 Cadillac DeVille

1 Answer

IAT sensor location


Don't even bother installing that, it won't do you any good! Check out the reason why here.

Mar 25, 2009 | 1999 Cadillac Seville

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