3300/3800 ICM difference?
04-18-2005, 09:24 PM
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3300/3800 ICM difference?
Today we got a '93 Ciera with the 3300 in the shop with a no start problem. Ran a diagnostic, no codes, so i go right to the ICM. Pulled a plug and did a test, flat dead. So my boss called the parts place and asked for a price, and a model # because we had a few modules in stock. The one we had on a shelf was labeled for a 92-95 3800, and according to the guy at the store it was the same # listed in the computer for the 3300. I thought they used different ICM'*? What'* the deal?
04-19-2005, 12:42 AM
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Yes it uses the same Ignition Control Module AC Delco # D1977A.
Ignition Control Module
Any one have the long # D1977A handy?
Sorry Bill I do not like all these GM abbreviations eater.
Ignition Control Module
Any one have the long # D1977A handy?
Sorry Bill I do not like all these GM abbreviations eater.
04-19-2005, 09:10 AM
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ICM- Ignition Control Module. We didn't have a delco one it'* an aftermarket piece, part number LX-340. The one we had and the one on the computer were the same as i said but i thought on here someone said that you can not interchange the two.
04-19-2005, 02:27 PM
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They do not interchange....
They are keyed diffrent...
Also the 3300 is an MPI engine and the 3800 line of engines are all SFI...
The Balancer on the 3300 has a single ring on the back of it...
The 3800 has a dual ring on the back of the balancer, and a dual crank sensor that measures 3x'* reference pulse and an 18x'* reference pulse for the SFI.. 3300'* do not use this system...
I tried messing with a 3300 ICM on a 3800 and it weas a no go...lol
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They are keyed diffrent...
Also the 3300 is an MPI engine and the 3800 line of engines are all SFI...
The Balancer on the 3300 has a single ring on the back of it...
The 3800 has a dual ring on the back of the balancer, and a dual crank sensor that measures 3x'* reference pulse and an 18x'* reference pulse for the SFI.. 3300'* do not use this system...
I tried messing with a 3300 ICM on a 3800 and it weas a no go...lol
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04-19-2005, 05:55 PM
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Every interchange, even AC Delco, I look at shows 1993 3.3 Cutass Ciera being different from 1992 back 3.3 ICM.
But you know how that goes the books are wrong some time.
But you know how that goes the books are wrong some time.
04-19-2005, 06:39 PM
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Originally Posted by ron350
Every interchange, even AC Delco, I look at shows 1993 3.3 Cutass Ciera being different from 1992 back 3.3 ICM.
But you know how that goes.
But you know how that goes.
1993 was the last year for the 3300 V6... As all of the 3300 powered cars would be powered by the new 3100 SFI V6 in 94...lol
Hmmm...
AC Delco PN# D1977A was used from 1990 - 04 as listed by AC Delco
AC Delco PN# D1946A was used from 1986 - 92
The 93 does have the D1977A listed for it... Wondering if they keyed it the same and left certain pins unused for the 3300?
Heck 93 might be an odd ball year... The 3300 wouldn't need the 18x'* pulse to run...
If anyone finds out please let us know... This may be good swap info fo the older 3800'* as well...
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04-19-2005, 09:18 PM
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Ya well i swapped the module today, didn't work!. After i got it together and hit the key, it didn't work. So we go about taking the balancer off by using the starter method, and one time i hit it, the wrench POPS off the bolt and it fires to life. Runs great for about a minute and a half and BAM stops cold, won't start again. What a pile.
04-20-2005, 01:42 AM
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NO START MAY BE THE CRANKSHAFT SENSOR...
I HAD THE SAME PROBLEM BEFORE ON MY 97 BONNEVILLE3800. AFTER CHANGING THE ICM WITH A KNOWN GOOD ONE... NO AVAIL... I PULLED THE HARMONIC BALANCER AND CHANGED THE CRANKSHAFT POSITION SENSOR. REPLACED THE BALANCER... VOILA STARTS EVERY TIME SINCE THEN... A $15 PART... NEED AN AIRGUN AND A PULLER TO REMOVE THE BALANCER, BUT A LOT CHEAPER THEN THE ICM WHICH WASN'T THE PROBLEM.
NOT SAYING THIS IS YOUR PROBLEM, BUT CHECK IT OUT FIRST...
camljr@juno.com
NOT SAYING THIS IS YOUR PROBLEM, BUT CHECK IT OUT FIRST...
camljr@juno.com
04-20-2005, 01:53 AM
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Re: NO START MAY BE THE CRANKSHAFT SENSOR...
Originally Posted by camljr
I HAD THE SAME PROBLEM BEFORE ON MY 97 BONNEVILLE3800. AFTER CHANGING THE ICM WITH A KNOWN GOOD ONE... NO AVAIL... I PULLED THE HARMONIC BALANCER AND CHANGED THE CRANKSHAFT POSITION SENSOR. REPLACED THE BALANCER... VOILA STARTS EVERY TIME SINCE THEN... A $15 PART... NEED AN AIRGUN AND A PULLER TO REMOVE THE BALANCER, BUT A LOT CHEAPER THEN THE ICM WHICH WASN'T THE PROBLEM.
NOT SAYING THIS IS YOUR PROBLEM, BUT CHECK IT OUT FIRST...
camljr@juno.com
NOT SAYING THIS IS YOUR PROBLEM, BUT CHECK IT OUT FIRST...
camljr@juno.com
And take that email address out of your signature. Spambots surf the net all day long looking for that type of thing (unless you LIKE spam).