98deville Posted March 20, 2006 Report Share Posted March 20, 2006 How hard is it to do this myself? and what brand fuel pump to go with. The reason I'm asking is cause my car doesnt want to start at all...the engine just keeps turning. and when the engine did kinda start it sputtered then cut off...any idea of what it could be.. and I have a 98 deville with 91k Link to comment Share on other sites More sharing options...
Ranger Posted March 20, 2006 Report Share Posted March 20, 2006 Put a fuel pressure guage on it and see what kind of fuel pressure you have (or don't have). It's in the tank so if you have to change it, you'll have to drop the tank. Link to comment Share on other sites More sharing options...
PAUL T Posted March 21, 2006 Report Share Posted March 21, 2006 Are there any codes? Link to comment Share on other sites More sharing options...
98deville Posted March 21, 2006 Author Report Share Posted March 21, 2006 I've checked the fuses and relays they're all good I also opened the gas cap to listen if the fuel pump turns on and there's nothing I priced a fuel pump at advanced auto parts it was 298$ which was a carter brand Link to comment Share on other sites More sharing options...
jhall Posted March 21, 2006 Report Share Posted March 21, 2006 If you pinpoint the problem to the pump and you're going to go to the trouble to do it yourself, I'd suggest you buy a GM pump as the replacement unless someone else on the board can vouch for an aftermarket unit. Doing the work is not too bad as long as you make sure the tank is down to 3 gallons or less. Any more than this makes it a challenge to handle the tank as it's removed. Make sure you pull the electrical connectors to the pump / fuel gauge loose before you loosen the tank brackets too much. Keep us posted. Link to comment Share on other sites More sharing options...
98deville Posted March 21, 2006 Author Report Share Posted March 21, 2006 and for the bad part....my gas tank is full. I just had filled my tank before the pump finally gave out... can i pump it out someway? Link to comment Share on other sites More sharing options...
Ranger Posted March 21, 2006 Report Share Posted March 21, 2006 Don't assume that the pump is good just because it is running. Check the pressure at the rail with a guage. Link to comment Share on other sites More sharing options...
PAUL T Posted March 21, 2006 Report Share Posted March 21, 2006 I would use only a GM pump. Also I have found it easier to use a floor jack with a board on it under the tank for support while I loosen the straps. The strap bolts won't come off easy. Then lower it slowly just far enough to disconnect the wiring. Then check to see if anything else is connected then lower it some more and just roll it out from under the car. Put the car on jack stands or back the car up on some solid blocks or a stack of 2X8's for extra ground clearance. Do not empty the tank completely because it will explode easier. If you do it in a garage be careful about any open flames and do it in a well vented area. Use the floor jack again to reinstall. Make sure the tank is seated good before you tighten the straps. Link to comment Share on other sites More sharing options...
98deville Posted March 21, 2006 Author Report Share Posted March 21, 2006 Here are the codes I pulled up PCM P0603 - Control Module Long Term Memory IPC B1552 - Keep Alive Memory Error SDM B1147 - Driver Side Air Bag System Malfunction B1148 - Passanger Side Air Bag System Malfunction TCS C1255 - EBCM Internal Malfunction PZM B1552 - Keep Alive Memory Error B1558 - BCM EPROM Checksum Error all of these are HISTORY codes Link to comment Share on other sites More sharing options...
joeb Posted March 21, 2006 Report Share Posted March 21, 2006 I replaced the FP on my seville last summer. when i checked the wire connector on the pump itself, I found a good bit of funky green scale. of course when you are holding a "good used" pump in your hand, with 100k miles of use, its probably not a good idea to put it back in. so i put in a new pump and chalked it up to life's usual quirks. I believe the tank on a seville can be accessed thru the trunk. not sure about a deville. Link to comment Share on other sites More sharing options...
98deville Posted March 22, 2006 Author Report Share Posted March 22, 2006 how can you tell if the fuel pump is turning on...can i hear it from outside the car? Link to comment Share on other sites More sharing options...
BodybyFisher Posted March 22, 2006 Report Share Posted March 22, 2006 Pressure test. Put a fuel guage on the schrader valve on the fuel rail... 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 Link to comment Share on other sites More sharing options...
98deville Posted March 22, 2006 Author Report Share Posted March 22, 2006 I also took off the fuel filter to replace it, and there was no gas coming from the fuel line when i turned the key. I also tried to blow thru the old filter and it was clogged bad. here are some codes I had months ago P0102 - Mass Air Flow (MAF) Sensor Circuit Low Frequency P0231 - Fuel Pump Feedback Circuit Low Voltage P0463 - Fuel Level Sensor Circuit High Voltage P0603 - Control Module Long Term Memory Reset P1660 - Cooling Fan Control Circuits Link to comment Share on other sites More sharing options...
BodybyFisher Posted March 22, 2006 Report Share Posted March 22, 2006 They are hard to blow though, don't let that be an indication that it was clogged That you didnt get fuel when you turned the key on, is not good. Before you go to the trouble of replacing the pump I would, 1) check the fuel pump relay and 2) check for power at the fuel pump connector when you drop the pump and disconnect the wires.. If you have power with the key on, then its the pump. Do this test with the hoses and pump in place so NOT to have gas FUMES in case of a spark... 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 Link to comment Share on other sites More sharing options...
mhinchley Posted March 22, 2006 Report Share Posted March 22, 2006 Carter makes good fuel parts. Carbs and Pumps. Link to comment Share on other sites More sharing options...
BodybyFisher Posted March 22, 2006 Report Share Posted March 22, 2006 I am a big Carter fan from the old days (AFB was my favorite and an OEM carburetor on old Cadillacs), but this is another instance where you are safer with an AC DELCO OEM pump as others have said. Again, OEM has been validated for your car and how long did this one last? When you start talking out there, TONS of cars are having fuel pumps replaced. My grandmother had a pump go in a 2000 Taurus last week at 23,000 miles, when I called ford the service manager said its common, he just replaced two on 2004 Explorers.. I want to make sure that 1) the correct insulation is used on the coil, 2) it can provide proper volume at all engine output levels 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 Link to comment Share on other sites More sharing options...
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