97 seville cold crank problem... Help

hero281 · #1 (**permalink**) 01-09-07, 12:16 AM

I love my caddie, however I have a problem. since it has been cold 50 it takes sometime 10 minutes to crank my car. especially in the morning or if the car has sat all day. this does not happen when the car is warmed up. When the car is warm is runs like a champ. When it was fall the car started great. The car will turn over but ofthen will not fire. eventually it sputters a few times and cranks. I have replace the FPR, I new plugs and wires (which were replaced prior to this problem). The fuel pump does come on when the key is turned (not started). I need Help

could it be the Coolant temp sensor (ect), fuel pump it self, any other sensor, injectors

boricuacaddy · #2 (**permalink**) 01-09-07, 09:35 AM

I had the same problem on my car, when it was cold it would take a few cranks to get it started. I did exactly what you did, changed the FPR. and it helped. but when I left my car sitting for a few day it kept doing it again. it would even let out woosh! sound after it did finally start. Someone suggested that maybe my battery did not have enough juice to crank it properly, since it wasn't a daily driver and sometimes sat for weeks. So, I bought one of those trickle chargers and hooked it up and guess what? it worked! Now my car starts up on the first crank everytime. I don't know if this is your problem but I just wanted to share what was wrong with mine.

David

**Ranger** · #3 (**permalink**) 01-09-07, 12:22 PM

You might also check the fuel pressure. Could be a weak pump.

dkozloski · #4 (**permalink**) 01-09-07, 02:24 PM

If everything is up to snuff your car should start at -27F cold soaked per GM Powertrain engineers.

hero281 · #5 (**permalink**) 01-10-07, 11:56 AM

thanks guys, i am going with ramger and get fuel pressure tested. I pulled the fpr off after setting over night and it did not spray out. which means it may not be under pressure!

Cad tech · #6 (**permalink**) 01-10-07, 03:30 PM

Try a fuel pressure regulator, know if steel or nylon rail when u get it. easy to install

Relieve fuel system pressure. Refer to Fuel Pressure Relief Procedure .

Clean any dirt from the fuel pressure retaining ring.
Remove the vacuum hose from the pressure regulator.
Remove the retaining ring.
Catch any spilled fuel using a shop towel.
Lift and twist the fuel pressure regulator from the fuel rail socket.
Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system.
Clean the fuel pressure regulator filter screen with gasoline.
Installation Procedure

Important
When servicing the fuel pressure regulator, insure that the O-ring backup, large O-ring, filter screen, and small O-ring are properly placed on the regulator.

Install the new O-rings on the fuel pressure regulator, if a new fuel pressure regulator is not being installed.
Insert the regulator into the fuel rail socket using a turning motion to properly seat the O-rings.
Install the retaining ring.
Install the vacuum hose to the fuel pressure regulator.

Install the intake manifold top cover. Tighten
Tighten the nuts to 2 N·m (18 lb in).

Notice
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Install the negative battery cable.
Inspect for leaks.
Turn the ignition switch ON for 2 seconds.
Turn the ignition switch OFF for 10 seconds.
Turn the ignition switch ON.
Check for fuel leaks.

clarkz71 · #7 (**permalink**) 01-10-07, 04:45 PM

Good instructions, sounds just like the FSM.

Cad tech · #8 (**permalink**) 01-10-07, 05:16 PM

SI2000 lol hate typing

hero281 · #9 (**permalink**) 01-10-07, 08:16 PM

cad tech,

I understand what you are saying! but i replace the fpr already? with new part and seals etc...

Clarkz71, what does fsm stand for?

Thanks.

Cad tech · #10 (**permalink**) 01-10-07, 08:29 PM

Was the regulator for the new updated steel fuel rail????? or the old nylon rail???? 2 different parts....if you have the nylon still go to dealer and get the new rail put on they should have phased it everywhere now....then tell them to replace the regulator at that time should do it for free since they have to dismantle the old one and reuse your injectors and regulator, they just put new o-rings on.....