Hi Everyone, Thanks for letting me join this forum I've owned this truck for almost 3 & 1/2 years now, she's a bit of a tank but I love it!! It was imported via Japan so I am the first NZ Owner. Im still learning about whats under the hood and im wondering if anyone can help me out please with a couple of questions as I am working on an experiment. First of all, does this vehicle have an ECU or MAF Sensor? Secondly, I've located the OBD port under the steering column which is 12pin, can I fit an adaptor to this to make it OBD2 16pin? I know Vehicles from 1996 onwards were required by law to have OBD2s And lastly, where do I find the air intake please? Cheers🤩

 

Welcome to the forum. Your Blazer does not have a MAF (mass airflow sensor), but it does have an ECU (engine or electronic control unit). The OBD1 system cannot be converted to OBD2. I'm not sure what you're asking about the air intake. If you want to know what part it is on your engine, it's that big round thing on top with the fat hose attached. If you're looking for an aftermarket one, I don't know where you'd find one or why you would want to. The stock one is actually very good.

 

Good morning Tom, thanks very much for your info, apprecite it🤩 I'll be keeping that big round thing with the flat hose lol so where is before the air intake? I need to insert a 1/4 inch pneumatic hose before the air intake to deliver gas also where would I find the ECU? Cheers, Berta

 

Are you talking about injecting gasoline, or a gas, like nitrous oxide? The inlet for the air is inside the fender, but you should be able to make a hole anywhere in the duct before the air filter to inject a gas. the seal between the plastic duct and the metal air filter housing is not airtight, so it would probably be best to do it in the metal part of the duct, after the plastic. If you're talking about injecting gasoline, you can't do it that way. You would need something more complicated.

I sold my '94 about 15 years ago, so I don't remember if the ECU is behind the glovebox or under the hood. It's one or the other. I'm sure Google could tell you.

 

I am about to fit a supplemental fuel cell to run with HHO and the injection needs to go before the air intake or MAF Sensor( which I don't have) when I removed the cover and looked at the carburetor, the delivery of petrol is injected and split?? TBI? I built a cell about 12 years ago and installed it on my 1996 Toyota Curren 1.8L and saved a considerable amount on fuel. I understand theres a big difference in cylinders here and totally different looking under the hood, cheers,Berta

 

That's what I suspected you might be doing. I'll do you a favor and keep my opinion about it to myself.

 

Thanks Tom, appreciate that 🤩 Cheers Berta

 

If it works for you, that's all that matters.

 

Awesome Tom you're a good sort 🤩 and thanks heaps for your info, cheers Berta

 

How much of an improvement in fuel mileage? I first made hydrogen from water in 1966. I think the baking soda volcano still won the science fair so I guess I was a victim of the clean energy debate 50 years ago. Lol.


George