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1

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 21 April 2024, 17:22:09 »

Just because something was previously changed,. doesn't mean that a) it's not faulty or b) not correctly fitted.

Fuel filter may not have made a difference, but I would wager that it was overdue.

The gear selector issue is yet another, separate, issue rather than part of everything else.

Have you replaced the MAF yet?

Have you reseated the cluster yet?

Also what other parts have been replaced recently?

Get the codes read, either with the pedal trick or an actual code reader and report back.

Crank sensor produces the rpm signal.

We have found problem!!!!!! Verry funny thing  One small wire on battery - Ground was too rusty so it was poor connection with ground. (sorry hard to explain in English )

And someone asked photos of car. So I made a few

2

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 19 April 2024, 14:37:45 »

Or a weak pump, or fuel pressure regulator...

FUel pump was changed by previous owner. I changed fuel filter nothing worked.
Also I've noticed that when I cant start engine Sport light on the dash starts blinkink (I've googled it its gearbox some error)
For now I dont have "My Naff Code Reader" to read faults but maybe there is some kind of sensor which checks rpm?

3

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 16 April 2024, 13:44:07 »

That points towards an issue either with the cluster or the connection from the engine ECU.

The dash is the one major difference between the Catera and Omega, and without seeing behind the cluster there may be additional wiring/plugs for the extra displays/warnings.

I suspect that the alternator only feeds the charge light (and battery voltage gauge), whereas the rpm signal comes from the engine ECU information (crank and/or cam sensor).

If the pedal trick works*, any codes may highlight a discrepancy.

* It should as the car is DBW.

The speedometer issue is almost guaranteed to be unrelated.

But engine right on high rpm. Car starts to stall when accelerating. Maybe I should start with (crank and/or cam sensor)?
Previous owner said that they changed crank sensor from omega.

Fuel filter ok?

if it miss fires on acceleration that points to ignition voltage and coil packs

I'm expecting fuel filter too And I will start to change it first soon.
Coil pack are new. Engine is not misfiring.

4

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 16 April 2024, 07:53:39 »

That points towards an issue either with the cluster or the connection from the engine ECU.

The dash is the one major difference between the Catera and Omega, and without seeing behind the cluster there may be additional wiring/plugs for the extra displays/warnings.

I suspect that the alternator only feeds the charge light (and battery voltage gauge), whereas the rpm signal comes from the engine ECU information (crank and/or cam sensor).

If the pedal trick works*, any codes may highlight a discrepancy.

* It should as the car is DBW.

The speedometer issue is almost guaranteed to be unrelated.

But engine right on high rpm. Car starts to stall when accelerating. Maybe I should start with (crank and/or cam sensor)?
Previous owner said that they changed crank sensor from omega.

5

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 15 April 2024, 19:02:05 »

And how does the battery voltage gauge look...

On dash it looks like normal voltage.



Or should I test with voltmeter ?

When the rev counter is erratic?

And what's that red light above it?

Tomorrow or Wednesday I will do new video with voltage arrow. But I think arrow is stable and always at same position.
That light is seatbelt warning for pasenger.

6

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 15 April 2024, 18:27:59 »

And how does the battery voltage gauge look...

On dash it looks like normal voltage.



Or should I test with voltmeter ?

7

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 15 April 2024, 17:21:36 »

Does the rev counter do that without driving?

And what does the battery gauge do when the rev counter fluctuates?

Is Fuse 12 intact?

12 Fuse is normal.
Without driving and not accelerating rev counter looks good +-

8

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 15 April 2024, 14:27:39 »

Perhaps I should have been clearer about the video...

There's too much back round noise to hear what the engine is doing, if anything, when the rpm spikes.

No driving and no radio. Just the rpm and the engine.

And for the third or fourth time, have you tried removing and reseating the cluster?

No I didn't tried.
I created third long video:
https://youtu.be/q-fGX4W9tDQ?si=uDNFD65pVkSo1CJN

9

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 15 April 2024, 12:27:21 »

You could always look to find somebody good with a soldering iron, the failure mode on the ABS module is a fractured bond wire, in fact two, (as there are two in parallel to increase current handling), not to hard to repair but it is fiddly.

https://www.youtube.com/watch?v=fpBmT0s8GnY

Great thanks I will try!
And I created another video for rpm problem, Mabey it would more clear.
https://youtu.be/tgfxWicssL8?si=s0sWJNb4javBIs4Y

10

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 15 April 2024, 09:55:38 »

Ok, that's the later car, so treat the engine as a 3.2 Omega... ie DBW with two coil packs And the MAF will be the same Bosch unit, although you should rule out vacuum leaks.

Re the ABS, that's possible, but not sure if all code readers are able to read the ABS or gearbox ECUs. The fact the the TC light isn't on suggests a different problem, iirc both lights come on when the speedometer fails if it's the ECU that's failed.

What does the TC switch do?

ABS and TC Lights comes together.
Maybe you have some ideas about RPM issue?

11

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 14 April 2024, 21:19:36 »

[/img]

Sooo...

You need a new MAF for a start. Again a picture of the engine bay will help a certain the correct one for your car.

A decent code reader to read the ABS ECU and see what it's complaining about, although that's potentially a wheel sensor or ECU fault.

Reseating the cluster might help with the rpm, but again, there could be an issue with the wiring that provides the signal or the cluster itself.

Any sign of moisture behind the driver's kick panel or under the carpet?

I cant access to ABS so that's I think its faulty.

https://ibb.co/S7HQJb3
https://ibb.co/rcLvpRN
https://ibb.co/QMsTDkf

12

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 14 April 2024, 16:12:35 »

And sometimes cold engine does not start. I have to disconnect Air flow sensor. only than engine starts Warm engine everything is fine.

13

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 14 April 2024, 16:09:13 »

Throttle issue is probably unrelated to abs and rpm issue.

The ABS light looks very dim, if you press the TC switch does the light come on fully?

I am thinking either the cluster isn't seated fully or it isn't grounded correctly/fully.

When I was driving I took out ABS fuse just for checking if it would change something. Abs and tc lights turns on almost every time and than speed does not work. And I cant read abs fault codes with diagnostic.
But the rpm is verry strange. (RPM arrow bounces by self, I'm not doing anything and driving like usual.)

14

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 14 April 2024, 14:23:49 »

Hi,
I've bought that catera  And maby could advise me what is the problem? RPM arrow does not work correctly. It bounces. And when accelerating suddenly, the car stalls, but when driving normally, everything is fine.
I've uploaded video:
https://youtu.be/66dB_xBW6CY?si=tKtjKzw2Fx1x5qXV

And ABS Ecu is faulty can it cause this ?

15

General Car Chat / Re: Cadilac Catera 3.0 V6 is it worth to buy for fun or collection ?

« on: 28 March 2024, 21:40:42 »

If you do buy the Catera, you have found the right place for help and advice to keep it in tip top condition! 

Yesterday I saw that Catera, It looks like the car body is good spedometer shows only 80k miles. engine runs flawlessly.
So I'm planing to buy it as weekend car for now.