Gain extra benefits by becoming a Supporting Member Click here find out how!

Classic Performance Products Classic Parts
American Auto Wire Classic Industries
Danchuk Catalog
Hellwig Products IncPerformance Rod & CustomJoin the Community today
Ecklers AutoMotiveNu-Relics Power Windows





Username Post: ignition coil and module        (Topic#358079)
george88gta 
"15th Year" Silver Supporting Member
Posts: 1984
george88gta
Loc: new york
Reg: 04-23-03
09-16-19 01:42 PM - Post#2775650    

On to the next problem with the 2001 S-10. The coil is sparking from the tower to the metal center of the coil. The new coil will be here tomorrow. The old coil is riveted to the bracket and it looks like the heat sync for the ignition module is riveted as well. Should I remove the ignition module before trying to drill/grind the rivets? Also, is it possible for the arcing to have damaged the ignition module? Truck starts hard and stalls and runs poorly for a few minutes after finally starting.



 




gchemist 
Senior Chevytalk Moderator
Posts: 24929
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
09-17-19 04:41 AM - Post#2775688    
    In response to george88gta

Pull the bracket off before drilling. Are you sure it's riveted? There should be a size 7 or 8 mm bolts holding it. I removed an ignition module from a 5.7 last week. I used a small ratchet to remove it. Check that the distributor is not loose. The 5.7 distributor I checked rotated all over the place. It was the reason it wouldn't start anymore.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
george88gta 
"15th Year" Silver Supporting Member
Posts: 1984
george88gta
Loc: new york
Reg: 04-23-03
09-17-19 09:55 AM - Post#2775709    
    In response to gchemist

I will be removing the bracket this afternoon, I will check closer may just be oxidation making it look like it is riveted.
On to the next problem, most likely related. The Temperature gauge shows full hot with the key on, engine cold. I hooked up the Tech II and it shows the coolant temp as 284 degrees. I scanned the head ( IR thermometer) and it show 65 degrees, the room temperature. I removed the CTS connector and the Tech II reads -38 degrees, Flowchart says to change the CTS, It is new. I measured the resistance of the CTS and it read 3570 ohms, correct for 60 - 70 degrees. I am reasonably sure this is part of the hard start problem. Plan to go thru the wiring, but this is starting to look like an ECM problem. When we changed the CTS, it came with a new style connector. I replaced the connector and soldered the wires. Should I have used an inline splice?



 
george88gta 
"15th Year" Silver Supporting Member
Posts: 1984
george88gta
Loc: new york
Reg: 04-23-03
09-17-19 11:55 AM - Post#2775724    
    In response to george88gta

Making progress. I cleaned away some of the oxidation and the ignition module is screwed down.
As for the swing in the CTS readings, it turns out that the new (installed February this year) NGK sensor is defective. The female portion of the connector, crimped/glued into the brass base, can move ever so slightly and changes the CTS readings. Off to the parts store. Next installment to this saga will be Thursday afternoon. Hopefully, it will say " on its way home".




 
gchemist 
Senior Chevytalk Moderator
Posts: 24929
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
09-17-19 01:32 PM - Post#2775732    
    In response to george88gta

Wow, that much corrosion? Better check other grounds too! Especially the block ones. If not add some. Block to body. Block to frame.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
george88gta 
"15th Year" Silver Supporting Member
Posts: 1984
george88gta
Loc: new york
Reg: 04-23-03
09-17-19 04:25 PM - Post#2775749    
    In response to gchemist

Actually, a few new grounds is an excellent idea. My 03 Silverado was a snow plow truck and I had ground issues as well. I did just that, ran some 10 awg wire to a couple of the key grounds. Made a big difference in reliability. We will see what Thursday brings.



 
george88gta 
"15th Year" Silver Supporting Member
Posts: 1984
george88gta
Loc: new york
Reg: 04-23-03
09-19-19 01:07 PM - Post#2775890    
    In response to george88gta

It Lives!!! I even gave him the "out of sight" warranty. As soon as the tail lights were out of sight, the warranty expired.
Here is a list of activities:
1. replaced fuel pressure regulator.
2. replaced fuel pump and fuel filter.
3. replaced defective CTS ( old one was 7
months old).
4. replaced ignition coil.
5. cleaned up some grounds.
I have my garage back!
Thanks for the help.



 




Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

197 Views
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.074 seconds.   Total Queries: 17   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 09:04 AM
Top