I have a 97 Bonneville that in cold weather it doesn't want to crank...as the day gets warmer it will fire right up,?Also check engine light is on and giving p003 code,random misfire code??? I just replaced the crank sensor,cause it went completely out and wouldn't fire at all so replaced and now this..is the crank sensor adjustable?kind of like timing??

first please put your year and the model in your signature

as for the random misfire.....

have you done a tune up at all??
how old are your plug wires and the plugs them self??

Is a 97 Bonneville SSE 3800 v6..

Hi and welcome...

The cold cranking is most likely a battery starting to go bad. I would assume you live in an area where it'* been getting colder latey. I'd suggest having the battery checked at a local parts store.

You may also pull both battery cables and check for corrosion while cleaning both ends of both cables. Corrosion is an issue on these cars.

On the code, can you be more specific, the actual trouble codes are listed in TechInfo. The code you posted doesn't necessarily look like any for a misfire.

On the crank sensor, there is no adjustment on the 97 and no way to adjust timing.

the car turns over fine when trying to crank,just doesn't crank,fires but doesn't crank up...the code i got was from a cheap pocket scanner actron?P003 they have site and was told it is a random misfire code?does this car have a cold crank sensor?

I'm confused... it fires but doesn't crank? Please elaborate further, this is confusing.

The starter cranks the engine and then it should fire the plugs and start.

When was the last tune up? (in time and mileage)

I guess we're getting old Bill, cranking used to mean the starter was turning over the engine. It sounds like he means it'* turning over but won't start.

Plugs, wires & coils is where I would look first.

what i am saying is when its cold weather it doesn't want to crank,as it warms up in the day it will crank right up,yes turning over fine,battery good,tuned up.i even put another coil on it..what would cold weather do with coil plugs wires?no being smart just asking... thanks

Even after the last post I am confused. Proper grammar will help. Like Ted said, cranking is when the starter is turning the engine over, and firing up is when the engine starts and runs.

So when its cold, the starter does or does not turn the engine over at sufficient speed?

The fuel mixture is richer as the weather turns colder. You need a good hot spark to ignite the richer mixture. If your coils are putting out 15,000 volts instead of 30,000 (not sure of the exact numbers) you'll start hae problems with cold starting. Here'* a link to a techinfo article on checking the coils. Take a look at the plugs also.

http://www.bonnevilleclub.com/forum/...e=article&k=33