View Full Version : why does my catera sometimes doesnt want to start

06-16-13, 02:40 AM
I drive the car around town and I park it when I try to drive it again it doesn't want to start the radio turns on I checked the battery its new I dont know whats wrong . I try later againg to start it and it starts ???

06-16-13, 04:12 AM
Need more info than that. Does it crank? If not, does it make any noise? A click? Some punctuation would make your post a little easier to follow.

BTW, :welcome:

06-16-13, 11:36 AM
CPS, Crankshaft Positioning Sensor may be bad. Very common problem.

06-16-13, 09:02 PM
Informative nitpicking:

CPS - Central Power Supply.

CKP - CranKshaft Position (sensor)

06-16-13, 09:15 PM
CPS sounds right. Add a longer section of heat shielding when you replace it. Aluminum foil works well. Heat from the exhaust manifold cooks the wire.

06-16-13, 11:43 PM
Or stick to the incorrect acronyms... either way :noidea:

We don't know if it even cranks. Impossible to diagnose it as CKPs without more information.

06-18-13, 05:25 PM
It doesnt crank. I put a new battery and ignition coil. After a few hours I try againg and it starts its weird I never had this problem with any car

06-18-13, 08:25 PM
I thought about this again. Basically the car is a piece of crap. No reflection on you, but on GM. Once you figure it out, something else will go wrong.

06-18-13, 10:43 PM
Does it make any noise at all when you turn the key?

Does it ever have a problem starting when the engine is cold? Or just when warm?

06-18-13, 11:35 PM
Seems like your starter is beginning to fail.

06-19-13, 12:17 AM
No sound when I turned the key, when its warm

06-19-13, 01:14 AM
Starters on their last leg sometimes won't function when hot.

06-19-13, 11:53 AM
My 98 did this 3 years ago replaced starter was all good til yesterday temp got to 3/4 would not start. Open hood cooled off to 1/2 in 30 min. Started right up. Only does it when it gets too hot.

06-19-13, 08:42 PM
Thank you all for your help im going to change the starter when I get some money cuz its expensive

06-19-13, 11:42 PM
Expensive? Where have you looked?

06-20-13, 07:09 PM

07-27-13, 12:35 PM
My 2000 would run and then intermittently not restart, let it cool down and it would restart.

The Battery was less than 10 months old. The positive terminal was getting hot enough to melt the nylon bag around the battery.

Although the primary connection to the battery was tight there are two other bolts that connect wires to the terminal that were loose. Tightening that connection eliminated the excessive heat (resistance) and haven't had a starting issue since.

12-25-13, 12:04 PM
Informative nitpicking:

CPS - Central Power Supply.

CKP - CranKshaft Position (sensor)

Actually, your acronyms are slightly incorrect.

CPS is the correct acronym for Crankshaft Position Sensor
CPS can also mean Central Power Supply
and CKPS is also known as a Crankshaft Position Sensor


12-31-13, 02:20 AM
No, CKP is the correct acronym for Crankshaft Position Sensor.

Manufacturers do not use the same acronyms for multiple systems/components. They each have their own.

If CPS was the acronym for Crankshaft Position Sensor, and Central Power Supply, wouldn't it also be the acronym for Camshaft Position Sensor? (Nope. Camshaft Position Sensor - CMP sensor)

From a Helm Cadillac Service Manual (1999 Seville):

http://i1130.photobucket.com/albums/m538/moistcabbage/EAFB35E3-520A-4894-B638-7AF301EACC43_zpsa3zdhokr.gif (http://s1130.photobucket.com/user/moistcabbage/media/EAFB35E3-520A-4894-B638-7AF301EACC43_zpsa3zdhokr.gif.html)

12-31-13, 12:08 PM
I don't see how CPS could be confused for Central Power Supply when the Catera doesn't have a Central Power Supply. I'm just saying.

12-31-13, 01:22 PM
I never said anything about confusing it for something else, I was just pointing out the correct acronym (see my first post in this thread... Informative nitpicking).

...The Catera doesn't have a PCM, but you wouldn't use the acronym for something else.

There have been a good number of members here, since I joined the forum, looking for diagrams of the CKPs, and wondering why they can't find any on Google. It's because the dealer websites and parts websites that have diagrams list the correct acronym, and they're searching CPS. There is an advantage to correct terminology.

12-11-14, 10:47 PM
I know this post is about a year old but there may be someone else with this problem. The answer to this problem is the range sensor/ neutral safety switch. In about a half hour to 45 minutes the switch cools enough to tell the starter interlock that the car is in park and will crank again. Take the switch off and clean the contacts or replace the switch and no more problem.