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Username Post: EGR Removal 88 350        (Topic#360430)
Blueseasons 
Contributor
Posts: 162

Reg: 10-13-11
04-06-20 03:58 PM - Post#2790513    

I am getting a jerky engine and uneven idle and then the "service Engine soon" light comes on. I'm assuming its the EGR valve. Can anybody verify its a 1/2" nut for me? And I cant seem to get a wrench on the nut to loosen it. Just not enough room to get either the closed or the open end on the nut. Am I missing something?



Edited by Blueseasons on 04-06-20 04:01 PM. Reason for edit: No reason given.

 
CowboyTrukr 
"9th Year" Silver Supporting Member
Posts: 4410
CowboyTrukr
Loc: Salt Lake City
Reg: 06-20-09
04-07-20 01:00 AM - Post#2790535    
    In response to Blueseasons

Let’s save you a bit of heartache. You familiar with how to check your trouble codes?

Greg

'95 K1500 Z71 EC Short Step 5.7L+0.040/NV3500
'00 Explorer XLT 4.0 V6 Auto
'94 K2500 5.7 NV4500 ECLB - SOLD
‘87 GMC S15 SCLB 4.3 Auto - SOLD

"The only thing necessary for evil to triumph is for good men to do nothing" Sir Edmund Burke


 
johnwd98 
Contributor
Posts: 457
johnwd98
Age: 70
Loc: Little Falls, MN
Reg: 09-05-10
04-07-20 05:48 AM - Post#2790541    
    In response to CowboyTrukr

I agree, don't assume anything when the trouble codes are easy to check. Another thing he doesn't seem to know, that's probably a metric engine.

1950 Fleetline, 355 TBI, mild cam, 700R4, 3.73 posi rear Blazer axle, MII front. Remote door and trunk locks, GM cruise control, A/C,


 
Blueseasons 
Contributor
Posts: 162

Reg: 10-13-11
04-07-20 08:34 AM - Post#2790547    
    In response to CowboyTrukr

I dont have a reader, so its not less trouble. I can get a 13mm socket on the nut, but there is no room to get a wrench on the socket. It seems loose though. If you dont know the nut size. Thats okay. thanks.



Edited by Blueseasons on 04-07-20 08:35 AM. Reason for edit: No reason given.

 
454cid 
Valued Contributor
Posts: 3152

Age: 47
Loc: West Michigan
Reg: 02-18-12
04-07-20 03:31 PM - Post#2790577    
    In response to Blueseasons

  • Blueseasons Said:
I dont have a reader, so its not less trouble.



What's a reader have to do with anything? Short the right pins, and count the flashes of the light.

99 K3500 RCLB


 
CowboyTrukr 
"9th Year" Silver Supporting Member
Posts: 4410
CowboyTrukr
Loc: Salt Lake City
Reg: 06-20-09
04-07-20 11:00 PM - Post#2790624    
    In response to 454cid

Checking your trouble codes is very easy. No reader necessary. Just a paper clip and this diagram.

Short A and B. Turn your key on, but do not start it. Count the service engine light flashes. It will give you your codes in two digit sequences. First, it will flash once, then twice. That’s 12. It will do this three times. Then it will cycle through all of the codes and loop back to flashing 12. Twelve is the default code that simply means it’s expecting an ignition pulse and it’s not there.

Attachment: A3CB349D-4C9A-4DD5-9180-BF5D0EA5A43B.jpeg (17.64 KB) 22 View(s)




Greg

'95 K1500 Z71 EC Short Step 5.7L+0.040/NV3500
'00 Explorer XLT 4.0 V6 Auto
'94 K2500 5.7 NV4500 ECLB - SOLD
‘87 GMC S15 SCLB 4.3 Auto - SOLD

"The only thing necessary for evil to triumph is for good men to do nothing" Sir Edmund Burke


 
Blueseasons 
Contributor
Posts: 162

Reg: 10-13-11
04-25-20 05:57 PM - Post#2792081    
    In response to CowboyTrukr

I'm sorry for not getting back. After getting much worse to the point of the engine almost dying and a couple backfires. My symptoms just went away. But Thanks for this information. I had been led to believe that you do need a code reader in order to get the codes from the reader and the Service Engine Light had to be lighted as codes are not stored with OBD1. I will file this and use it next time.



 
johnwd98 
Contributor
Posts: 457
johnwd98
Age: 70
Loc: Little Falls, MN
Reg: 09-05-10
04-26-20 05:15 AM - Post#2792109    
    In response to Blueseasons

If I remember right, codes are stored until one of the battery cables is removed. The computer is then reset.

1950 Fleetline, 355 TBI, mild cam, 700R4, 3.73 posi rear Blazer axle, MII front. Remote door and trunk locks, GM cruise control, A/C,


 
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