Search: Posts Made By: Nehmo Sergheyev
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12-23-16, 11:23 AM
Replies: 7
Views: 1,420
Posted By Nehmo Sergheyev

74756I've already replaced the board, and things...

74756I've already replaced the board, and things seem to be functioning normally.
But what caused this burn-out in the first place? It looks like a serious short, but how could that have happened...
12-18-16, 09:07 AM
Replies: 7
Views: 1,420
Posted By Nehmo Sergheyev

Job done

I successfully replaced the control board in the furnace, and the furnace now functions.
Looking at the old board now that it's out, I realize it would have been a major job to repair. The burn-out...
12-16-16, 04:38 AM
Replies: 7
Views: 1,420
Posted By Nehmo Sergheyev

New 50A56-956...

New 50A56-956 (http://www.emersonclimate.com/Documents/White-Rodgers/instruction_sheets/0037-7475.pdf)
Existing 50A55-843...
12-15-16, 11:28 PM
Replies: 7
Views: 1,420
Posted By Nehmo Sergheyev

One other peculiarity I should point out. On the...

One other peculiarity I should point out. On the pic of the whole compartment, on the bottom of the control board plate, you can see the base of a disconnected capacitor. On the floor, is one hanging...
12-15-16, 10:25 PM
Replies: 7
Views: 1,420
Posted By Nehmo Sergheyev

We already have the replacement control board....

We already have the replacement control board. Actually, someone else ordered it using the numbers I provided.

New Board 50A56-956
existing Board 50A55-843

The first 4 digits are encouraging....
12-13-16, 08:12 AM
Replies: 7
Views: 1,420
Posted By Nehmo Sergheyev

Advice on Replacing Furnace Control Board

We are about to occupy a house that has been unoccupied for an unknown period of time. The furnace is a
Luxaire model # pcuhbld12n100c furnace serial # EKHM791522
MULTI-POSITION NATURAL GAS...
Replies: 4
Views: 968
Posted By Nehmo Sergheyev

41150To get the nomenclature down, do you mean...

41150To get the nomenclature down, do you mean the #1 cylinder?
There are 2 routes for coolant to get into a cylinder. The head gasket could be blown or the head could be cracked. 41151....
Replies: 11
Views: 1,091
Posted By Nehmo Sergheyev

I suggest whacking the throttle Position Sensor,...

I suggest whacking the throttle Position Sensor, and seeing if the behavior occurs then.
Replies: 3
Views: 652
Posted By Nehmo Sergheyev

Usually, you can simply look at engine mounts to...

Usually, you can simply look at engine mounts to see if they are failing. Something will be visibly broken. But your complaint is just a "shaking" engine, I assume at idle.
The engine is the 3.3 L...
Replies: 4
Views: 968
Posted By Nehmo Sergheyev

You have either the Duratec 3l or Vulcan 3l ;...

You have either the Duratec 3l or Vulcan 3l ; probably the Vulcan, a pushrod engine. Which do you have? (The intake manifold tubes, looking from the driver's seat, form lines, one set of which could...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

there are ways to put the crank at tdc but none i...

there are ways to put the crank at tdc but none i know of with out taking the valve covers off to know about the cams.

I'm sure I could find Top Dead Center TDC on a cylinder by using a plastic...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

I realize you can check for a timing chain jump...

I realize you can check for a timing chain jump (http://www.agcoauto.com/content/news/p2_articleid/115) by removing the timing cover (and everything atop), and inspecting the marks. 40508This...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

You're right, iceman681, although I've been...

You're right, iceman681, although I've been working on this 4.6L (which is a V) for weeks, somehow, when I was writing the post, I had a different engine in mind, a totally different one.
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

The MAF sounds like it checks out as ok...could...

The MAF sounds like it checks out as ok...could be timing...Without having more to go on its pretty hard

My best info on the MAF is http://www.motor.com/magazine/pdfs/072006_04.pdf which doesn't...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

I was able to find a few places How to Test...

I was able to find a few places
How to Test the Ford Mass Air Flow (MAF) Sensor, test 4 (http://easyautodiagnostics.com/ford/4.9L-5.0L-5.8L/maf-sensor-tests-4)
2vid...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

I don't have a compression tester handy, but it's...

I don't have a compression tester handy, but it's beginning to look like one's needed. I'm not sure, though. I don't think I'm getting the tailpipe smoke characteristic of bad rings.

The place...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

I went the economy route with the scanner,...

I went the economy route with the scanner, PocketScan Code Reader CP9125 (http://actron.com/product_detail.php?pid=16298), and it doesn't display live codes.
I'm worried about taking it for a...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

I disconnected & reconnected a bunch of stuff,...

I disconnected & reconnected a bunch of stuff, and I erased the codes again. Now, I get, with a warmed-up engine (the last reading was from a cold engine), 16 inches Hg vacuum, which is in range. And...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

As I mentioned before, this is the first time...

As I mentioned before, this is the first time I've used a On Board Diagnostic code reader. (http://actron.com/product_detail.php?pid=16298). Although the current system, OBD II...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

I just swapped one of the COPs from a...

I just swapped one of the COPs from a non-functioning cylinder with one from a functioning cylinder. There was no change in either test: testing for engine sound change by disconnecting a COP...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

39709 This pic is from the Chilton Library...

39709
This pic is from the Chilton Library which I got via using my county library's access (using my library card # over the web) . As you can see, according to the pic, the "primary" circuit is...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

So far, the results are depressing. I only...

So far, the results are depressing. I only checked one failing cylinder's COP (#2), by using the adjustable gap tester, and simply using the regular gap of an installed plug, I got a good spark.
...
Replies: 31
Views: 3,459
Posted By Nehmo Sergheyev

HEI COP 4.6L Ford LTC What gap shoud I use to test spark?

2005 Lincoln Town Car 4.6L engine having Coil On Plug (COP) ignition

I'm getting misfire codes on the entire right (passenger) bank. The entire list of codes minus pending duplicates):
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