Search found 269 matches

by Robou
Sun Oct 18, 2020 11:36 pm
Forum: Electrical system (30)
Topic: Help needed. No start. No spark
Replies: 39
Views: 746

Re: Help needed. No start. No spark

It is quite difficult in this lengthy conversation to find out what actually happened, so I didn't. But it may not be superfluous to point to the fact that the relays in many cases are activated by the ECU only if the engine is turning e.g. by the starter motor. At ignition on relay connections 86 c...
by Robou
Sun Aug 09, 2020 4:14 pm
Forum: Tuning And Tweaking
Topic: ECU Modification
Replies: 71
Views: 35925

Re: ECU Modification

Seemingly off topic, but servicing the purpose of my last post: Avoiding giving the same answers time and time again. If anyone likes redirecting this to a proper topic, you're welcome. ************************************************************************* The idle valve is a bypass of the thrott...
by Robou
Tue Aug 04, 2020 11:55 am
Forum: The secret life of a 480 owner...
Topic: 1994 Volvo 480 Turbo Diary - Update September 2020
Replies: 56
Views: 10585

Re: 1994 Volvo 480 Turbo Diary - Update July 2020

Your report about rebuilding the engine is very interesting, particularly the part about the valves as it reveales things I should have known years back. When I advised people about the dump valve it was evident to name the 06A145710P as, in contrary to the original, it has a metal interior and the ...
by Robou
Mon Jul 20, 2020 7:12 pm
Forum: Tuning And Tweaking
Topic: ECU Modification
Replies: 71
Views: 35925

Re: ECU Modification

Contrary to my expectations, the demand for modification continues. Repeatedly it turns out this thread is too long to grasp the essentials, forcing me to iterate explanations. Hence a recapitulation. 1- The Roboumod is equipped with the mod ("eco") resulting in smoother handling and less fuel consu...
by Robou
Mon Jul 20, 2020 6:29 pm
Forum: Tuning And Tweaking
Topic: Robou ECU Fly Lead?
Replies: 6
Views: 591

Re: Robou ECU Fly Lead?

Judging by Jeffs activity on the forum he's a very busy person. Let's relieve him by sending me your e-mail address by PM and I'll provide you with the somewhat outdated "Manual". This conversation triggered an update in https://www.volvo-480-europe.org/forum/viewtopic.php?f=3&t=19944 where you may ...
by Robou
Sun Jul 19, 2020 10:31 am
Forum: Tuning And Tweaking
Topic: Robou ECU Fly Lead?
Replies: 6
Views: 591

Re: Robou ECU Fly Lead?

After having received jifflemons documentation you may notice an isolated jumper is needed to temporarely connect the wires in order to perform a reset. From the picture I can't make out whether the jumper is still present. If not, a (metal!) paperclip or anything like that will do. Just don't keep ...
by Robou
Wed Feb 12, 2020 11:01 pm
Forum: The secret life of a 480 owner...
Topic: Oli's 1992 Volvo 480ES Limited Edition
Replies: 96
Views: 9050

Re: Oli's 1992 Volvo 480ES Limited Edition

Well, it is you asked, but it very much looks like one of the rear springs is giving up.
by Robou
Sun Jan 26, 2020 10:23 pm
Forum: Engine (20)
Topic: Yet more engine issues
Replies: 12
Views: 1319

Re: Yet more engine issues

You found the culprit, I suppose. Start by replacing the filter, no harm done anyway. If still no return the pump should be checked.
by Robou
Wed Jan 22, 2020 10:47 pm
Forum: Engine (20)
Topic: Yet more engine issues
Replies: 12
Views: 1319

Re: Yet more engine issues

Perform a reset on the roboumod and check if the problem is right there from the beginning. Both ECUs may be in some loop as a result of turbo spikes or some ignition anomaly. Also check the vacuum in the air pipe to the ECU. This is no cure but it may give a direction of where to find a solution.
by Robou
Mon Jan 13, 2020 10:02 pm
Forum: General Discussions
Topic: Blinky 51/480
Replies: 428
Views: 45232

Re: Blinky 51/480

In some cases circuits in which the DRL's are included in the defect check are affected: The warning light stays on. Just do away with the bulb failure detector in the relais box. The rear bulbs check will remain. The resistor idea is nonsense. They are in parallel with the bulbs so always cause a c...
by Robou
Fri Dec 13, 2019 10:21 pm
Forum: Electrical system (30)
Topic: Extreme Speedo Rescue
Replies: 21
Views: 2332

Re: Extreme Speedo Rescue

When shielding is used for equalizing potential it is not shielding anymore. Shielding should be connected only at the input ground preferably.
by Robou
Sun Nov 24, 2019 11:38 pm
Forum: Engine (20)
Topic: Erm, engine won't start, seems to be flooded with fuel
Replies: 6
Views: 804

Re: Erm, engine won't start, seems to be flooded with fuel

When you tapped the accelerator you made the throttle valve go into it's closed position. The cable gets stuck somewhere. It has nothing to do with the idle valve. Oil and/or loosen the cable a bit and check if the accelerator comes up all the way. If at starting the throttle valve was not at it's i...
by Robou
Sat Nov 02, 2019 10:48 pm
Forum: Engine (20)
Topic: Rough running - B18FT
Replies: 11
Views: 1686

Re: Rough running - B18FT

All symptoms, except the long time to start, sound like being caused by the MAF. Check first if you replaced it by the correct type, number ending by 007 or 021. Then clean the connector and if no success move the wiring to and fro. You may reconnect a broken wire in doing so. When idling is normal ...
by Robou
Wed Oct 23, 2019 9:55 pm
Forum: General Discussions
Topic: Engine Electrics
Replies: 46
Views: 3849

Re: Engine Electrics

@yorkievolvo: Not any coil, I stated coil meant for transitorized ignition, today's cheap standard. And after Alan 480's post I may add a coil meant to be used with a balast resistor but then used without the resistor. "Any" coil would include the coils meant for use with breaker points which could ...
by Robou
Wed Sep 18, 2019 8:57 pm
Forum: General Discussions
Topic: Engine Electrics
Replies: 46
Views: 3849

Re: Engine Electrics

Is this a reaction on my post or did you just have the urge to say something?
by Robou
Mon Sep 16, 2019 9:29 pm
Forum: General Discussions
Topic: Engine Electrics
Replies: 46
Views: 3849

Re: Engine Electrics

Some odd misinformation here. The turbo has just a cheap standard coil for transistorized ignition. The coil connects to 12V at ignition on. A small module, holding two transistors, is connected to the other spade on the coil and connects/disconnects to ground. The latter action causes a spark. This...
by Robou
Sun Jul 28, 2019 10:48 pm
Forum: Electrical system (30)
Topic: YANIC problem!
Replies: 6
Views: 1039

Re: YANIC problem!

When you take the infocenter fully apart you'll notice the elecrical connections to the glass substrate are made by a strip in which there are conductive parts. Both ends may have a failing contact. Clean the surfaces with whatever you find appropriate and may be you find a way to put more pressure ...
by Robou
Sat Mar 16, 2019 11:00 pm
Forum: Engine (20)
Topic: 1.7 turbo MAP sensor, where is it?
Replies: 5
Views: 1183

Re: 1.7 turbo MAP sensor, where is it?

Don't cheer too early, it's inside the ECU EZ210K. Next questions: Location? Under the upholstry at your left leg. How's that? Sitting in the drivers seat.
by Robou
Sun Feb 24, 2019 11:27 pm
Forum: Engine (20)
Topic: Running On
Replies: 15
Views: 2018

Re: Running On

Very intriguing! The "dieseling" needs fuel. Injection being multi point or "semi" multi point shouldn't matter, it is activated in some way. Now when the ignition is switched off it is only effective as far as the spark is concerned, because the ignition coil is effectively powered off. But the ECU...
by Robou
Fri Feb 15, 2019 10:58 pm
Forum: Engine (20)
Topic: Coil pack question... car doesn't start
Replies: 4
Views: 840

Re: Coil pack question... car doesn't start

I would say for a starts study some diagrams and get power to the coil, the fuel pump etcetera. It is difficult to advice given the circumstances you describe. Think of a logical scheme and take care of one problem at a time.