Question 1994 Roadmaster - Page 2 - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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post #16 of 19 (permalink) Old 11-21-2012, 02:43 PM Thread Starter
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I have checked for loose grounds and connectors. Inspected the wiring and fuses all ok. Back on the injectors. I rechecked the injectors and while running removed each connector. All made a significant change except #7. 7 did not change the running of the engine at all. As I said before I planned to change all the injectors but found out the cost. AZ $89.95 Napa $119.00 ea.. Have found some online for $44.95. Is it smart to change them all. Engine has 54K miles on it. But is 18 years old. Always garage kept.
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post #17 of 19 (permalink) Old 11-21-2012, 02:44 PM
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Have you checked around for rebuild and reflow costs?

I think a ways back my friend had a set done for under a hundred.

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Originally Posted by sweetbmxrider View Post
I have a heavily modified lt1.
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post #18 of 19 (permalink) Old 11-21-2012, 09:48 PM
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Originally Posted by KW Baraka View Post
So you had the shudder even with the shifter in third gear (Drive) ?

Mmmmm.......wonder if it could be the EGR valve ....

what if you have no codes and what should i look for on a scanner? what if it a studder shudder at just before 1-2 shift and just after and a just after 2-3 shift shutter?

Will the scanner even show this egr prob as going in and out of open and closed loop?

does going back into closed loop from open loop be a egr prob with no light on?

i think i have a egr prob.

sorry to hi jack..

'00 Safari SLE with '95 4bolt 355 LT1; decked .010'', hand ported 374s & intake (David Vizard tech), 1.94/1.5", farmed out EFI 24x, 2001 LS1 pcm, VooDoo 211/219*, w/1.7" rr .574"/583", 4L60e, shift kit & corvette servo, G80 GT4, 3.73:1, ported & massaged Granny's Speed Shop headers, true duals, 2 long Cherry Bombs used for resonators, 2 long Thrush Turbo mufflers, local tune under an Oak tree. 5 year project/swap.
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post #19 of 19 (permalink) Old 12-11-2012, 09:55 PM Thread Starter
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I'm Back. A friend and I got to studing the issue and as said above noticed a difference when disconnecting the injectors one at a time while running. One in particular was obviously bad. So pulled all the injectors and sent off for cleaning and flow testing. Report came back that one was stuck open. Fixed it. Put it back together today and no change the problem is still there. I did notice at the exhaust that you can hear the miss very pronounced. It is on the drivers side.
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