help with poor running 93 grand am 3300 --FIXED-- - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-01-2007, 03:16 PM   #11
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The not so nice noise??

Does it sound like a Growl with a slight grinding sound that comes and goes?

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Old 09-05-2007, 09:09 PM   #12
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i started it up today to see what it would do..

started and sounded great... put it in gear and gave it some gas, it just totally bogged, and killed...

FINALLY the SES light comes on...

i pulled a 27, 28 & 43

not sure if the Bonneville codes are the same, but that is what I used

27 - Gear Switch Diagnosis( Second Gear Switch )
28 - Gear Switch Diagnosis ( Third Gear Switch )
43 - Electronic Spark Control Circuit

so according to this.. its starting in 2nd gear?
http://www.automotiveforums.com/vbulletin/t679458.html
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Old 09-05-2007, 10:19 PM   #13
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Interesting...

For now do not worry about the gear switches... This does not mean its starting in 2nd gear... There is no first gear switch...

The 3T40 uses a 2nd and 3rd gear switch... But the third gear switch lets the ECM know that it has hit 3rd gear so that at the right speed with the right operating temps the ECM can apply the TCC.. The ECM has to know what gear its in to do this properly...

The spark control circuit could be a big issue..

iirc this means that the ECM tried to take control of the spark timing and failed..

In this case its possible to have a Bad ICM or a Bad ECM...

Hard to say for certain...

I am not 100% but there is a possibility that the 93 3300 may used the same ICM as the 93-05 Bonnies... Compare the key ways...

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Old 09-05-2007, 11:39 PM   #14
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Bad ICM or ECM with a perfect running engine?

possble old code?
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Old 09-05-2007, 11:52 PM   #15
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Possible old code..

Blank the codes and see if it happens again.

I didn't see a code for an issue with the TCC solenoid..

As a Test you could unplug the connector on the trans and take it for a spin. Or unplug the connector and put the car in gear.. And see what you get..

The Code 43 is an issue that can cause the car to stall out.. There is something going on between the ECM/ICM and or Possibly the crank sensor..

But the fact that it runs confuses me..

Again, Now that you have pulled the codes, Blank the ECM and see if any at all return

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Old 09-15-2007, 05:08 PM   #16
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disconnected the battery today for 30 minutes. it fired right up and idled and reved great in park. I put it in gear, and once again it bogged instantly, and the SES light came on.

This time only a 43.

Should I get a used ICM or ECM?
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Old 09-15-2007, 07:07 PM   #17
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My 2 cents... I had a 92 ciera wagon for 10 years... it started to do the same.. I changed the filter, it got better running but still had no go. I had the converter changed to no avail and the (thing under the coils) with nothing but more money down the drain. As my wife doesn't drive much it sat for about a week, I went and tried again, made it out of the driveway and it quit, wouldn't start... Was the...(can't think of the name) sits behind the harmonic balancer and tells the plugs when to fire. Changed it and the car ran great, actually kinda sorry I got rid of the car IT WAS PAID FOR
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Old 09-15-2007, 11:44 PM   #18
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I wonder if perhaps the torque converter could be in lockup mode. I recall while searching for a problem resolution on a 91 GP, that was listed as a possible cause for a vehicle stalling out when coming to a stop. The test was to disconnect one of the connectors to the transmission to release it. Perhaps that is why you found that connection unplugged? Try unplugging it again.
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Old 09-16-2007, 06:54 PM   #19
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oh wow.

FIXED!

I started searching other boards for more ideas, one was to clean the MAF. just for ***** and giggles I pulled the MAF on it... I could not even see it, it was so dirty. A couple quick shots of QB Electronic Cleaner and put her back in.

It chirps the tires now!

I could not be happier
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Old 09-16-2007, 07:10 PM   #20
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Not bad for the middle brother Buick 90* V6 Eh?

9.0 : 1 compression too.. Slightly smaller bore and shorter stroke...

The Old 3.0 was almost the same... But it retained the 3.8'* 3.80 " bore but had a short 2.66 " stroke.... Would rev quick...

I have seen some of those 3300'* with the 3T40 that Could smoke the tires from a dead standstill

Glad to hear the problem was solved

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