HELP dont know what happened to my gsx...

[99blueRS-T]

Hi, i have a 90 gsx, but isnt working well, it all start when i bought the car, seemed to be right but soon the car began to overheat, we took it to the mechanic and he changed the head gasket but the car failed in low rev and the car seemed to be fine again and then the ECU burned, i sent it to rebuilt but they didnt do it, i searched in the internet the ECU's that fit the gsx and find one and then i bought one on ebay that fit my gsx but the problem was that the ECU was federal and my car is californian and the mechanic said the federal ECU injected more fuel than the californian because california cars were restricted or something and said something about the maf i bought a new maf (they told me it was upgraded) but it was broken or something and the mechanic said it didnt work, the last time i tried the car i accelerate but the revs went to 2000 and the car had fuel-cut and i send it back to the mechanic, i just dont know whats happening to my car, and it seems to me that neither do the mechanics, so i tought maybe someone here that has been in the DSM world for more time, and know the 4g63 could help me, also what could/shoul i do to fix my car, i really need it and my parents are telling me to sell it and get a jetta but i really love my car, i want to keep it, thanks to everyone for come seeing my thread

 

[Defiant]

Periods.

Find a mechanic who has half a clue. This one doesn't.

 

[BlueFly]

First of all... Never, ever buy a Jetta. If you think you have problems now, well, let me tell ya'.
Sounds like the smog techs you're going to are pretty inexperienced. There is usually a whole bunch of factors that are different between the Federal and the California ECU. I've seen cars with 15 different ECU's listed just for California alone. The reason the number on your ECU is like 20 digits long, is because they need that long of a number to differentiate between all the units available. Any decent smog tech would have told you this, and probably wouldn't have installed (couldn't, legally, in California smog shops) an ECU that was not a correct replacement.

Are you paying someone to diagnose this problem, or are you doing the part-swap-shuffle, to try to figure it out?

 

[99blueRS-T]

hi, well on problem may be that were mexicans, we live in tijuana, and its kinda hard/impossible to find a mechanic who knows what he is doing, specially with vehicles like this, that arent as simple as a VW bug(they're still abundant in my country, actually there are 2003 bug models, seriously) well anyways thats why we asked on the forums, cause the mechanic is telling me to do this and that and never solves the problem, making me spend money, ohh and the smog test are no problem i am running without cat, my country laws are not as extrict in that aspect as US laws, so if the ECU works, fine.
thanks for your replies, keep 'em koming!!

 

[ho bag]

as far as i know all 90-94 mas's were the same for turbo cars, non turb owas different i believe. what is the part number on your ecu? take it out and take a pic for us so we can make sure its a turbo ecu. also check for boost leaks the will really #### you up, as far as car overheating, check simple things first like the rad cap, i though mien head gasket went and it turned out to be the rad cap seal cracked, do all that stuff and we will figure out what is wrong with your car