Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

1

Omega General Help / Re: 3.0V6 not starting on all cylinders, black smoke, strange errorcodes

« on: 14 January 2019, 15:32:05 »

The car already was running with the new style dis module so I don't think that's the problem. It's not like the car never ran before with those Frankenstein like parts.

2

Omega General Help / Re: 3.0V6 not starting on all cylinders, black smoke, strange errorcodes

« on: 14 January 2019, 08:50:15 »

Typing error. It was error 39, not 29.
The dis module is 100% working because my omega from 2000 was running with it. I changed it for an other one because I thought it was broken but in the end it was a damaged signal lead. Also the problem doesn't  change at all when I change the modules in the current omega.
The ECU is definitely one for the old sensors. The type number is ending with HJ and the new style 900 Ohm crank sensor causes errors with it.
Checking the plug leads over and over again was one of the first things I did after I got the engine to start again. They should be in the correct order according to the numbers printed on the dis modules.
By the way I found out there should be ECU grounding connections using 3 screws on top of the dis bracket of the old style dis module (the one with the plug lead connectors pointing towards the fire wall) but where are those grounds with the new style dis module which is mounted with the plug lead connectors pointing towards the engine hood?

3

Omega General Help / 3.0V6 not starting on all cylinders, black smoke, strange errorcodes

« on: 13 January 2019, 22:07:10 »

Hi,
I bought a 1995 manual Omega 3.0 V6 Caravan some weeks ago. I didn't introduce myself yet because I'm writing from my smartphone. I'm going to do it tomorrow, I promise it .

The problem I have right now is that I bought it not running. The previous owner told me the engine shut down when he stopped the car at a stop light and then it wouldn't start anymore. He tried replacing the crank sensor which unfortunately only made it worse because some other previous owner changed the engine wiring loom for a 97+ one with the newer plugs. That guy built a crank sensor out of an old sensor and a new plug.
I did the same again and now the engine at least starts again... somehow at least. I can start if I push down the accelerator and with some luck it fires up on 4 cylinders but won't idle and it smokes black and smells of fuel. It doesn't burn oil or water.

What I already did is, as I said, changing the crank sensor, new timing belt (because the previous owner gave me one, nothing wrong with the old one), installed new spark plugs, new plug cables, new dis module (because I had a known good one from one of my previous Omegas), checked the compression (all cylinders 11-13bar), checked the injectors without the upper intake half (all giving good atomized squirts of fuel when cranking the engine).
I've also unplugged every sensor but the crank and camshaft sensors and tried to start so the engine had to take failsafe values just in case one of the sensors would give false values and the ECU is trying to drown the engine in fuel but that changed nothing. Still rich and not running right.

The errors I get when the engine is not running because I can't keep it running long enough to get the running error codes are:

21 tps voltage high
54 fuel pump relay voltage high
74 air flow sensor voltage high
29 O2 sensor voltage high

19 crank angle sensor wrong signal (at least this error goes away when the engine crankshaft over

Extremely strange error codes if you ask me.
I'd like to check the engine and sensor grounds but didn't find them all till now. If you could tell me where I should search for them that would help me very much.

The only other possible cause I could think of would be a broken ecu (maybe a transistor for the ignition) but if you know anything I could look for... I'm open for any idea.