ECU/PCM Purchase

1.8-liter VVTL-i (2ZZ-GE) and VVT-i (1ZZ-FE) engine, transmission, exhaust, intake, and performance tuning discussions

ECU/PCM Purchase

Postby Petrucci914 » Wed Jul 25, 2007 12:12 pm

Hello,

First question, does the ECU contain the PCM?

Instead of paying a couple hundred dollars for a PCM re-flash, why not just buy an ECU off of eBay (assuming it contains the PCM). There is a guy selling them for $60 and they have less than 30 miles on them.

I have a question on one of them, though. He lists many different ones for the 2003, FWD, AT. What are the differences between then?

http://cgi.ebay.com/ebaymotors...ZWD1V

Thanks!

2003 Pontiac Vibe Base - Automatic
TRD Supercharger w/ Smoothflow Pulley
aFe Drop-in Filter - DC Sports Header
Full 2.25" Exhaust -Magnaflow Catback + Cats
Optima RedTop - Tru-Cool Tranny Cooler
User avatar
Petrucci914
 
Posts: 991
Joined: Sun Oct 23, 2005 12:33 am

Re: ECU/PCM Purchase (Petrucci914)

Postby joatmon » Wed Jul 25, 2007 8:22 pm

in a vibe, the ECM and the PCM are the same box PCM is powertrain control unit. ECU could be electrical, electronic, engine control,computer unit. basically the computer than controls the engine and if equipped, the auto tranny, and probably some other things.

I don't know what the differences are between the various part numbers listed.

I have read conflicting info about flahing the things. Some people say they can't be flashed, that is why when GM has a TSB that includes a new ECU/PCM program, they replace the entire ECU/PCM. A few matrix folks have said they have had theirs flashed. Maybe the things can be flashed, and GM decided it was more cost effective to treat the thing as a replaceable unit than to buyToyota ECU/PCM flashing equipment and training for all their dealers. That might be the difference in the various models in the ebay listing, different versions of code, but if so, then it might be worth finding out what the differences are, and which version of the program comes on the one for sale.

Image
User avatar
joatmon
 
Posts: 8626
Joined: Fri Mar 21, 2003 5:19 am
Location: SMC MD

Re: ECU/PCM Purchase (Petrucci914)

Postby Raven » Wed Jul 25, 2007 8:50 pm

The numbers are probably for different ECU versions built at different times during the production run. You should check yours before ordering one.
Also you could try calling a GM parts counter and ask them what the numbers mean.
User avatar
Raven
 
Posts: 2888
Joined: Tue Sep 30, 2003 10:58 am
Location: Lac Ste. Marie, Quebec

Re: ECU/PCM Purchase (Petrucci914)

Postby scherry2 » Wed Jul 25, 2007 9:04 pm

ECU's can be reflashed. it takes about 20 minutes but I doubt a GM tech has the proper tools to do it. as for the part #'s, different part numbers are for different configurations IE; A/C, no A/C, automatic, manual, awd, and a host of other electronic control needs, even down to the sound and lights your car makes when using your key fob when unlocking/locking your door. and also years, 2003 would be a different part number than 2004. at our plant we have 6 to 8 different ECU's.
User avatar
scherry2
 
Posts: 4073
Joined: Wed Mar 26, 2003 8:02 am

Re: ECU/PCM Purchase (scherry2)

Postby Petrucci914 » Thu Jul 26, 2007 1:12 am

Did anybody get their ECU replaced under that TSB? If so, could you give me the ID number off of it? It would have to apply to a 2003, Auto, FWD.
2003 Pontiac Vibe Base - Automatic
TRD Supercharger w/ Smoothflow Pulley
aFe Drop-in Filter - DC Sports Header
Full 2.25" Exhaust -Magnaflow Catback + Cats
Optima RedTop - Tru-Cool Tranny Cooler
User avatar
Petrucci914
 
Posts: 991
Joined: Sun Oct 23, 2005 12:33 am

Re: ECU/PCM Purchase (Petrucci914)

Postby kevera » Thu Jul 26, 2007 4:38 am

I read this earlier this morning.Its my understanding the ECU and PCM are the same thing.I had my ECU/PCM replaced.This is from the TSB and is for the auto like I think you have.
2003 Automatic PCM-Front wheel Drive #88974133
June '07 VOTM Sept '07 MOTM HCVO /HCMO

The Red Devil
User avatar
kevera
 
Posts: 3127
Joined: Thu Jul 31, 2003 8:30 pm

Re: ECU/PCM Purchase (kevera)

Postby Petrucci914 » Thu Jul 26, 2007 4:43 am

Very cool. I may get that but I should probably save up as well to get my tranny rebuilt..........I think its about to go. My vibe is starting to roll back when in Drive on steep inclines. Not normal, is it?
2003 Pontiac Vibe Base - Automatic
TRD Supercharger w/ Smoothflow Pulley
aFe Drop-in Filter - DC Sports Header
Full 2.25" Exhaust -Magnaflow Catback + Cats
Optima RedTop - Tru-Cool Tranny Cooler
User avatar
Petrucci914
 
Posts: 991
Joined: Sun Oct 23, 2005 12:33 am

Re: ECU/PCM Purchase (Petrucci914)

Postby Petrucci914 » Thu Jul 26, 2007 4:45 am

Well, maybe normal. Read this off a Lexus IS webpage:

I'm not entirely sure how it works, but especially if you've had a merc before this, the Lexus does not creep forward as strongly as mercs do.

Therefore, it doesn't have as much power on steep hills and will roll backwards. There is however a hill hold function that will stop the car from rolling backwards, but if you don't bring the car to a complete stop before letting go of thae brakes, it won't always engage.

It used to bother me as well, but ever since I understood how to make it work, it will never roll back - and I prefer it as I can let go of the pedal and it won't roll forwards (as it would with most other cars)

2003 Pontiac Vibe Base - Automatic
TRD Supercharger w/ Smoothflow Pulley
aFe Drop-in Filter - DC Sports Header
Full 2.25" Exhaust -Magnaflow Catback + Cats
Optima RedTop - Tru-Cool Tranny Cooler
User avatar
Petrucci914
 
Posts: 991
Joined: Sun Oct 23, 2005 12:33 am

Re: ECU/PCM Purchase (Petrucci914)

Postby kevera » Thu Jul 26, 2007 4:46 am

In regards to the rolling back.Mine has always done that so I wouldn't worry.
June '07 VOTM Sept '07 MOTM HCVO /HCMO

The Red Devil
User avatar
kevera
 
Posts: 3127
Joined: Thu Jul 31, 2003 8:30 pm

Re: ECU/PCM Purchase (kevera)

Postby Petrucci914 » Thu Jul 26, 2007 5:40 am

Hmm, just looked at my ECU. What I saw was this:

Toyota
89661-01112
Denso. Manufactured in Tennessee

That number doesn't seem to match anything I can find. I don't want to replace it with something that is older, or something that will fry my ride.

2003 Pontiac Vibe Base - Automatic
TRD Supercharger w/ Smoothflow Pulley
aFe Drop-in Filter - DC Sports Header
Full 2.25" Exhaust -Magnaflow Catback + Cats
Optima RedTop - Tru-Cool Tranny Cooler
User avatar
Petrucci914
 
Posts: 991
Joined: Sun Oct 23, 2005 12:33 am

Re: ECU/PCM Purchase (Petrucci914)

Postby kevera » Thu Jul 26, 2007 5:54 am

The number I gave you is the GM number.The number you have is the Toyota #.The question is,why do you want to replace the pcm.
June '07 VOTM Sept '07 MOTM HCVO /HCMO

The Red Devil
User avatar
kevera
 
Posts: 3127
Joined: Thu Jul 31, 2003 8:30 pm

Re: ECU/PCM Purchase (kevera)

Postby Petrucci914 » Thu Jul 26, 2007 5:57 am

Ya, mine wasn't GM Badged at all. Did they not do that in the beginning or what? My tranny performs pretty ****ty most of the time. I had a mechanic look at it and he agrees but he says it's not mechanical that I should get a re-flash. Well, I don't want to pay $300 or so for something that might not be able to be done. So I thought I could just buy a new ECU, or better yet, a newer/updated one.
2003 Pontiac Vibe Base - Automatic
TRD Supercharger w/ Smoothflow Pulley
aFe Drop-in Filter - DC Sports Header
Full 2.25" Exhaust -Magnaflow Catback + Cats
Optima RedTop - Tru-Cool Tranny Cooler
User avatar
Petrucci914
 
Posts: 991
Joined: Sun Oct 23, 2005 12:33 am

Re: ECU/PCM Purchase (Petrucci914)

Postby kevera » Thu Jul 26, 2007 6:25 am

For the $60,might be worth a try.The part # I gave you matches the one on the ebay listing.If you think it's the pcm,it's a cheap way to find out.In regards to the Toyota pcm.I think all Vibes have the Toyota pcm,I have an 04 and mine is also a denso.
June '07 VOTM Sept '07 MOTM HCVO /HCMO

The Red Devil
User avatar
kevera
 
Posts: 3127
Joined: Thu Jul 31, 2003 8:30 pm

Re: ECU/PCM Purchase (kevera)

Postby Petrucci914 » Thu Jul 26, 2007 7:45 am

I've scheduled an appt with a Transmission Business. I'm going to have them run tests on it and make sure no valves or solenoids are shot. If that all passes then I'll buy the ECU replacement.
2003 Pontiac Vibe Base - Automatic
TRD Supercharger w/ Smoothflow Pulley
aFe Drop-in Filter - DC Sports Header
Full 2.25" Exhaust -Magnaflow Catback + Cats
Optima RedTop - Tru-Cool Tranny Cooler
User avatar
Petrucci914
 
Posts: 991
Joined: Sun Oct 23, 2005 12:33 am

Re: ECU/PCM Purchase (Petrucci914)

Postby Petrucci914 » Thu Aug 09, 2007 1:19 am

I got the ECU today but I don't see that GM number. I told him I wanted the 88974133 version (updated revision). Is there some way I can be sure?
2003 Pontiac Vibe Base - Automatic
TRD Supercharger w/ Smoothflow Pulley
aFe Drop-in Filter - DC Sports Header
Full 2.25" Exhaust -Magnaflow Catback + Cats
Optima RedTop - Tru-Cool Tranny Cooler
User avatar
Petrucci914
 
Posts: 991
Joined: Sun Oct 23, 2005 12:33 am


Return to Engine & Transmission

Who is online

Users browsing this forum: No registered users and 1 guest

x