bigboy Posted May 18, 2010 Report Share Posted May 18, 2010 my sts of 09/1993 with i hear makes it a 94 has a bit a a prob i just put a new rad in because the old was really badly leaking since then the sat will run really well would never know anything was wrong just driving down the road it seems the longer i let the car sit the longer it takes to get it started when i do try to start it it seems to pop and when i let off the key it will try to idle under 10000 rpm only been going on for about a week really love the car dont want to see it blow up anything anyone can tell me im sure my sts will thank you for it thanks for your time Link to comment Share on other sites More sharing options...
Ranger Posted May 18, 2010 Report Share Posted May 18, 2010 Check the FPR. It's probably leaking. That cause hard hot starts. Link to comment Share on other sites More sharing options...
bigboy Posted May 18, 2010 Author Report Share Posted May 18, 2010 Check the FPR. It's probably leaking. That cause hard hot starts. what is the FPR this morning i had to call into work because the battry died before it started the cooling problom is fixed hasnt over heated since the new rad Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted May 18, 2010 Report Share Posted May 18, 2010 FPR Fuel Pressure Regulator Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
BodybyFisher Posted May 18, 2010 Report Share Posted May 18, 2010 On the 93, the FPR is located inside the intake, you must take off the top of the intake to see the FPR. DO NOT, start the engine with the top of the intake off, it will rev uncontrollably. You need to take the intake top off and inspect the FPR Give us more detail about the starting problem, does it sound like it wants to start? Have you checked for codes? 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...
bigboy Posted May 18, 2010 Author Report Share Posted May 18, 2010 On the 93, the FPR is located inside the intake, you must take off the top of the intake to see the FPR. DO NOT, start the engine with the top of the intake off, it will rev uncontrollably. You need to take the intake top off and inspect the FPR Give us more detail about the starting problem, does it sound like it wants to start? Have you checked for codes? well i don't know how to do anything as far as codes go and im taking the intake off right now iv already taken the "box" that holds my air filter now im working on the large hose what should i be looking for? how do i know is something is not right this is my first caddy and im doing all the work myself. i love the car and thats why i want to fix it thanks for all the help everyone!!! Link to comment Share on other sites More sharing options...
Ranger Posted May 19, 2010 Report Share Posted May 19, 2010 Once you get the cover off and locate the FPR on the fuel rail, turn the key on to energize the fuel pump, but DO NOT crank the engine. If any fuel leaks from the FPR nipple it needs to be replaced. Link to comment Share on other sites More sharing options...
bigboy Posted May 19, 2010 Author Report Share Posted May 19, 2010 Once you get the cover off and locate the FPR on the fuel rail, turn the key on to energize the fuel pump, but DO NOT crank the engine. If any fuel leaks from the FPR nipple it needs to be replaced. cool going to give it a try is there anything els that i should try if thats not the problom? Link to comment Share on other sites More sharing options...
BodybyFisher Posted May 19, 2010 Report Share Posted May 19, 2010 Explain your hard starting again, is it cranking, slow, fast, etc Try holding the pedal to the floor that shuts off the injectors in case of flooding the next time 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...
Ranger Posted May 20, 2010 Report Share Posted May 20, 2010 Once you get the cover off and locate the FPR on the fuel rail, turn the key on to energize the fuel pump, but DO NOT crank the engine. If any fuel leaks from the FPR nipple it needs to be replaced. cool going to give it a try is there anything els that i should try if thats not the problom? One thing at a time. Lets condemn or rule out the FPR first. Link to comment Share on other sites More sharing options...
bigboy Posted May 22, 2010 Author Report Share Posted May 22, 2010 Once you get the cover off and locate the FPR on the fuel rail, turn the key on to energize the fuel pump, but DO NOT crank the engine. If any fuel leaks from the FPR nipple it needs to be replaced. cool going to give it a try is there anything els that i should try if thats not the problom? One thing at a time. Lets condemn or rule out the FPR first. its a slow crank almost sounds like a misfire or something fowling out it also somkes when cold but clears up with in min's iv been thinking it might be best to just drop it of at the shop but i would hate to i was able to jump the car to a start yesterday and drove it down the road drove really well like nothing was wrong? so what do you guess think i should try Link to comment Share on other sites More sharing options...
BodybyFisher Posted May 23, 2010 Report Share Posted May 23, 2010 Load test the battery and check and clean the battery connections especially the positive cable 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...
bigboy Posted May 28, 2010 Author Report Share Posted May 28, 2010 Load test the battery and check and clean the battery connections especially the positive cable the battery is new just put it in about a week ago i couldnt see it just sit in the drive way anymore so i took it to a shop got it started in like 5 min's just trying the start it over and over again and then she came alive when i flet like it was going to start i let of the keey and she came to an idle under 1000 rpm the man at the shop said he was not the best guy for a cadillac and said it could be the fule pump does that sound like it could be right the sls is back in my drive way just siting there i would really like to know how to check the codes for the car but i cant find anything online for my year and make. Link to comment Share on other sites More sharing options...
BodybyFisher Posted May 28, 2010 Report Share Posted May 28, 2010 Here is how to check the codes Go to the top of this page, click www.caddyinfo.com, go to HOW TO, go to DTC CODES, go to the instructions for your year and model, and post the codes here and we can help Here is where to find out there meaning 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 Link to comment Share on other sites More sharing options...
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