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New 2001 STS Owner


Heff

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I am a new and proud owner of 2001 Seville STS. This car was owned buy an older woman how loved to drive into and over things. In the front portion of the drivers under carriage near the bumber there was a protective shield gaurding something in which it is now broken. What this looks like is a plastic container and like a 1/12 inch hose that is hanging there. It looks like the rubber hose goes into this plastic thing cause there is a 1/2 of a circle cutout in it for looks like this cap or whatever it is broke off. This is not a coolant hose for the cooling system doesnt leak. This rubber hose is connected to something that is buried in upper part of bumper/wheel well. Any Ideas? and for other little things the suspension message is displayed in viewer but OBDII computer pulls no codes? Passenger window will go down using driver switch but not passengers?

Any help is greatly appreciated

Geoff

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Under what bumper, drivers or pass side? Take a digital photo and post it

Is this a black thing that looks like a football?

Do the windshield washers work?

Does the parking brake pop off when you put the selector in Drive?

Do you know how to extract the DTC codes stored in the computer?, you dont need a code scanner, your on board diagnostic system stores them. Go to the top of this page, click caddyinfo.com, go to how to, then DTC codes then follow the directions for your year and post the codes here or go here

http://myweb.accessus.net/~090/dtcobd2.html

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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It is on driver side. Its is round looks like a filter maybe? will post picture tomorrow for it is raining here and havnt a garage... Any info about this car I can get, tips and pointers would be greatly appreciated. I purchased this car for 2700$ with 38,000 miles on it from a very nice older woman. I am disabled and needed a safe dependable car.

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That appears to be the Secondary Air Pump, it appears you are missing the bottom of it. Someone with experience will post more about it

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Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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a5bc4ddc.jpg this is exactly what it is. Thank you for your help it really shows what real Cadillac owners are, a stand up crowd of individuals. Glad I joined.
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Welcome aboard, glad we could help.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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So now I have a new problem... I had bought a new secondary air pump...after instal now i get a p0101 code Maf sensor It wasnt doing this before the car hesitate and coughs and wont accelerate can anyone help?

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So now I have a new problem... I had bought a new secondary air pump...after instal now i get a p0101 code Maf sensor It wasnt doing this before the car hesitate and coughs and wont accelerate can anyone help?

You could accidentally pull off some vacuum lines or disconnect some connections and forget to reconnect.

The saddest thing in life is wasted talent

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not that I know of it is 10 pm here and i am frustrated!!!! I removed head lamp air box and that's about it anything in the vicinity of where I was working?? where these vaccum lines may be?

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not that I know of it is 10 pm here and i am frustrated!!!! I removed head lamp air box and that's about it anything in the vicinity of where I was working?? where these vaccum lines may be?

Vacuum lines run usually from the throttle body to all kind of devices such as Fuel Pressure Regulator, EGR solenoid, etc. Do not get frustrated. I am sure there is something simple. A small vacuum leak can cause very serious driveability issues.

The saddest thing in life is wasted talent

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I will say I appreciate your prompt replies and will go over these areas tomorrow. Am I glad I joined this forum....The past replies I have gotten have been a HUGE help...

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I would try disconnecting the battery and letting the system go through a relearn, its possible that with the air pump running now, its introducing additional air, compared to before and confusing the PCM.

DTC P0101

Circuit Description

The mass air flow (MAF) sensor is an air flow meter that measures the amount of air entering the engine. The powertrain control module (PCM) uses the MAF sensor signal in order to provide the correct fuel delivery for a wide range of engine speeds and loads. A small quantity of air entering the engine indicates deceleration or idle. A large quantity of air entering the engine indicates an acceleration or high load situation. The MAF sensor has an ignition 1 voltage circuit, a ground circuit, and a signal circuit. The PCM applies a voltage to the sensor on the signal circuit. The sensor uses the voltage in order to produce a frequency based on inlet air flow through the sensor bore. The PCM uses the barometric pressure (BARO) , air density, manifold pressure, throttle position (TP), and the engine RPM in order to calculate a predicted MAF value. The PCM compares the actual MAF sensor signal to the predicted MAF value in order to determine if the signal is stuck based on a lack of variation, or is too low or too high for a given operating condition. Diagnostic trouble code (DTC) P0101 will set if the actual MAF sensor signal is not within a predetermined range of the calculated MAF value

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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See this thread, pay attention to what Logan has to say

http://caddyinfo.ipbhost.com/index.php?showtopic=6868

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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not that I know of it is 10 pm here and i am frustrated!!!! I removed head lamp air box and that's about it anything in the vicinity of where I was working?? where these vaccum lines may be?

Here is a part from the thread recommended by BBF which may directly refer to your situation.

Important

An improperly installed air cleaner or a distorted /missing Intake Air Duct may cause this DTC to set. Ensure air cleaner assembly / IA duct is installed correctly and that there are no kinks, folds or damage to the IA Duct or possible debris in the air cleaner assembly or the MAF sensor inlet screen that may distort the air flow.

The saddest thing in life is wasted talent

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So this morning I went out to car made sure all duct, sensors lines and plugs were plugged in; they were. I stil;l had the problem. so I said hey lets take it for a ride. so I did, about 1/4 of a mile the car was doing the coughing and bucking. So as I hit a straitaway I got on it. It would go up to 3000 rpm than not shift, eased off pedal it shifted. when i came to a stop the battery light came on car stalled. I was then able to restart the car. After I restarted the car problems gone!!!!! I can now rev engine past 3000 and car idles beautifully is it possible that the car retaught it self? cause it's in fine running condition now.

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So this morning I went out to car made sure all duct, sensors lines and plugs were plugged in; they were. I stil;l had the problem. so I said hey lets take it for a ride. so I did, about 1/4 of a mile the car was doing the coughing and bucking. So as I hit a straitaway I got on it. It would go up to 3000 rpm than not shift, eased off pedal it shifted. when i came to a stop the battery light came on car stalled. I was then able to restart the car. After I restarted the car problems gone!!!!! I can now rev engine past 3000 and car idles beautifully is it possible that the car retaught it self? cause it's in fine running condition now.

I do not know whether you should disconnect the battery to reset computer default settings when secondary air pump is disturbed. I know you should do that when say, you clean the throttle body. BUT besides disconnecting the battery for a minute there is a second option - just driving the car for a while and let it learn new conditions that way. From your description it sounds like the car did just that, learned itself and learned the hard way! lol Glad you are a happy camper again.

By the way, because the car was driven by an old lady, you probably need to clean the throttle body, EGR valve when you have a chance. A couple of WOTs (wide open throttle) never hurt a Northstar either. On a highway put it in second gear accelerate with full throttle to say 70 MPH and let it decelerate to 30 MPH. Repeat it a couple of times.

The saddest thing in life is wasted talent

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Will do that..... So on a lighter note I had just received and new passenger mirror from a 98 STS It has Memory but no Dim color match and all for 31.99..... Everyone I talk to says I stole it for that price....

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