Ive had so many problems with my tpi. I just want to switch to Carb. It seems like every month thiers somthing new broken or not working right with my tpi.
This is the lattest of my problems https://www.thirdgen.org/techbb2/sho...hreadid=304649
I was wondering since i have an 89 formula. would it be better to switch since all my parts are old and seem to breaking all the time. ive bought 3 new computers 2 maf airflow sensors, 1 set of injectors, numerous ignition parts, 2 o2 sensors 3 fuel pumps, and so many other things i cant think of.
Im just so frustrated . you should never get 10 mpg from a fuel injected system and get no codes and no scanner will tell
us wrong ... " now thats probably because of the person reading it".So unless one you you master minds live near me i dont really know what to do.
i JUST want my beloved car fo function properly
so maybe with a carb i could get better gas milage and more power would be a nice side effect.

thanks for any suggestions ahead of time...

 

Why are you going through the same parts over and over? And you'll need a fuel pump even with a carb .

 

carb set ups are cheaper

 

i only replaced the same parts because i was told that these mechanics would stake thier reputations on the fact that the aformetioned parts were bad.

Yes my car has ruined many a mechanics reputation. No one has been able to get it running right more than a month or 2 at any stretch.

 

Blaming the injection system for others diagnostic failures (and tons of money) is not fair.

Yes, the system is now fairly old, and parts will fail, but the parts you list as being replaced don't fail in the timeframe I'm assuming you are working with, at least under "normal" circumstances. As you say, it's ruined many mechanics reputation, well, that's because they don't take the time to diagnose your car.

This board is a great resource, before listening to those mechanics, did you give the people of this board a chance to help you work on this issue, and did you give yourself the tools to figure out the problem as well?

 

Yes i agree that this board is the best resource for fixing my car.

but even they have been unable to figure out what was wrong with my car. only after about a year and half of finally just swapping parts we figured out it was the injectors.

Im just wondering since i seem to only have undiagnosable problems. maybe i should swap to a simpler system that will at the same time give me more power.

and at $75 dollars and hour it just sucks to leave it some where for a few weeks and then be told that they cant figuer out what the problem is.

 

i would go with a carb. Because just like my website says, "many things" can be wrong with fuel injection. And to diagnose it, you need to haul out a lot of cash for a service manual, light tester, and multimeter.

 

yes thats the problem cause when you test the indavigual components they all check out great.

but i still get hanous gas mileage. So somthings not right its just trying to find that.

ive got the meters and the resorces to check the individual parts and have done them all. but it still wont run properly.

Its running better now but i still get the awful milage. and it pukes gas out of the tail pipes.

the most agrivating part is. it dosnt do that all the time just it really only seems to puke the gas during drivieng but while ideling it does pretty good now.

 

There are people with carbs that can't fix problems either. So what it really comes down to is how willing you are to spend time and money on your vehicle. There is a reason that statistics/studies exist about how often mechanics and shops are either dishonest or incompetent.

Think about what finally led you to injectors as being a culprit, to pick out one problem. Did you learn something other than to throw parts at the car, or did you just "get lucky" and replace all the injectors? Without going back to your previous posts, if your problem with the injectors was described correctly, were injectors, and to test them, never mentioned?

"Ive had so many problems with my tpi." You only linked to one thread though. Your code 36 for example. Did you find the post(s?) from trickster with the flow chart for that code? Sometimes it is hard to wade through all the info here, if you aren't getting responses to your questions, it's typically either the way they are phrased, no one really knows, or more likely, it's been covered before and people are expecting you to search.

It's your vehicle though, so you could very possibly end up happy with a swap to a carb. But to think that swapping to a carb solves all driveability/troubleshooting issues isn't right.

 

you just put a new carb on and the problem is fixed. Eliminates many things that can be wrong.


I just looked on the "internet" and saw something called a "labscope" it "helps" you "diagnose" "many things" on the car and be more precise then a meter.

 

Check out this link
https://www.thirdgen.org/techbb2/sho...hreadid=304200

This is my frustrating history with the tpi system. The only advice i can give you is search, read , repeat then try to use what you have learned as reference to trouble shoot. I knew absolutly nothing about the tpi system when i bought my gta, now i am getting so familiar with its quirks i couldnt see giving up on it now.

 

Exactly my thoughts too.
If its a beater that you just want to run and have no issues with emmisions then by all means go the carb route. You will still have to fine tune it to cover any trouble spots and cut plugs to be sure the WOT is ok. Allot of the same problems will exist.

As for your TPI,
There are free software scanning software packages and cables can be made for a few bucks (or bought for $35)
Find out for yourself what the car is doing instaead of relying on people who see only a couple of F-bodys a year.
Getting the data and having a description of the EXACT symptoms will save you a TON of money (and a few reputations)
Mechanics have to make quick judgemnts based on the facts they are given or told, many go for the immediate "should be" this to make the customer happy and save them cash only to find out the problem wasn't described correctly and they should have done the research them selves.
I don't take my car to anybody anymore because of that reason and the extra cost for datalogging that you can do yourself.
All the info is there for many problems to be diagnosed, it's all in how you interpet the data along with the symptoms.

I would not give up my TPI since I now see how everything works and can tell me what the problem is (or at least point me in a direction). Burning your own chips just opens the door that much farther to be able to make mods and take full advantage of them.

Just my $0.02