20 Most Recent 1990 Cadillac SeVille - Page 7 Questions & Answers

Check battery cables. Clean and replace bolts that hold them on.

This is your firing order....

Things that cause this are usually carburetor problems....sometimes the fuel/air mix is off and the timing too.

What have you done so far to the engine that coould be related to either of these?

Serpentine Drive Belt Routing

If you hear the relay clicking,and even faint horn, check the connections on the horns themselves, there are probably two. If they seem okay then take a piece of wire and jump from +power to the horn terminal. Be prepared because if it works it will be very loud, and I know more than one person who's hit his head on the hood doing this. If it doesn't work, replace the horns. Hope this helps. Cheers.

Check Spark Plugs And Distributor Cap. Make Sure All The Wires Are On To Start.

2 bolts and wire harness. Difficulty 3 of 10. Common hand tools used.

Go to http://alldatadiy.com/ and buy a subscription for your vehicle. If you want to repair it yourself you will need this data. It is good for 1 year and has, testing and inspection guides, component locations, wiring digrams and a lot of info the DIY'er needs.  I am looking in all my code manuals and still do not see an e49. AIR is a system that puts fresh air into your exhaust so the emissions at the tailpipe are lower. It's an EPA mandated system. If you have to pass an emissions test in your state or county you will have to get them system woking properly. Check out alldata it is worth the 30.00.

At The Bottom Of Clock You Will See A Little Dot like Buttom Press In With A Ball Point Pen And Then The Clock Will Start Flashing Hours Hit The Up Down Buttons To Change The Hour
Then Once Hour Is Set Push The Button With The Pen Again Than Mins Should Start Flashing And Than When Finished Push With The Pen And You Have Just Set Your Clock

Your Vent Doors Open And Close By Vaucum So Have Your auto Repair man Check Your Vaucum Lines Starting Under Your Glovebox And Then Working His Way Out Under The Hood

Good Luck

if it is a north star you nead a special socket the size of the pump you can rent one from some part stores

You would have to take a picture and send to [email protected] to verify fix. Sadly if its that bad I imagine the rest of the car is pretty rough underneath. Technically speaking if the car is worth fixing the welder would have to be an up to date D.O.T cerfitied welder.

the first thing to check is to have the engine running. as soon as it reaches operating temp the upper radiator hose should get hot. if it doesn't then it's the thermostat. if it does then i believe your water pump is probably not circulating like it should and it should be replaced. however before replacing the wter pump make sure that the wire to sending unit is tight and not giving you a false reading. if your model has electric fans make sure the fans are running when the engine is hot. if they are not running check the relay in the fuse box for the fans with the engine running switch out the fan relay with the a/c clutch relay. ifthe fans kick on replay the relay with a new one. if they don't click on the it's either a bad wire or the temp sensor probe is bad. hope this answers your question. please rate this solution...thanks.

4.5 And 4.9L Engines

1. Remove the air cleaner.
2. Remove the TP sensor connector.
3. Unscrew the 2 TP sensor attaching screws and retainers, and remove the TP sensor.

To install:

1. With the throttle valve in the normal closed idle position, install the TP sensor on the throttle body assembly.
2. Install 2 TP sensor attaching screws with retainers. Do not tighten the screw until the TP sensor is adjusted.
3. Install the TP Sensor connector. Adjust the TP Sensor and perform the idle learn procedure.
4. To Perform the TP sensor adjustment.
   1. Disable the generator by grounding the green harness connector plug adjacent to the generator.
   2. Start the engine, enter diagnostics, and select PCM override PS103 'ISC Actuator'
   3. Press the 'COOLER' button on the CCP to retract the ISC Actuator. This action will disengage the A/C compressor and command the EGR 'OFF'. The Climate control center display will change from '50 to 00'. The ISC Actuator will slowly retract (about 20 seconds) to a fully retracted position. Verify that the throttle lever is resting on the minimum idle speed screw. With the ISC Actuator plunger fully retracted, disconnect the ISC harness.
   4. Select the PCM data PD01, 'TP Sensor', while still in PCM override PS03. Note the throttle position (in degrees) displayed on PCM parameter PD01.
   5. (-0.5° TO + 0.5°) No TP sensor adjustment required. Reattach the ISC Actuator harness and disconnect the grounding wire at the generator.
   6. TP Sensor (-10.0° TO -0.6°) or TP Sensor (+ 0.6° TO + 90.0°) TP Sensor adjustment required.
5. With the engine 'OFF' and the ignition 'ON', reenter diagnostics and select PCM override PS03 'ISC Actuator'. Press the 'COOLER' button to retract the ISC Actuator the minimum air setting.
   1. Loosen the TP sensor screws just enough to permit the sensor to be rotated. Open the throttle slightly and allow the throttle lever to snap shut against the minimum air screw. Adjust the TP sensor so the parameter display is 0°. Tighten the TP sensor mounting screws with the sensor in the adjusted position. Recheck the parameter to be sure the TP sensor parameter is (-0.5° to + 0.5).
   Install the air cleaner.

on brake pedal bracket under dash disconnect wiring remove switch -replace

their is none

your damper control has a problem

Videos and text based articles. They are nearly always to the left and right of the centre console under the dash. https://www.google.com/search?q=1994+cadillac+seville+sts+replace+blend+door+actuator ..

Could be the interlock brake switch . don't guess an just replace parts . You don't know how to test , take it to someone who can .