Siena: No advice for you from me, besides getting the CORRECT 3.0 V6 engine back in place.

If I'd adviced against this alien "installation", I doubt you'd have listened anyway. Your bed, lie in it!

Ikenna351:
The main problem is that he seems not to acknowledge that he created the problem and brought it upon himself.

Ikenna.

Seun: Is this helpful?

Siena:

@ Ikenna: Carburettor engines can still be bought, either used, factory refurbished or brand new. Examples are the VW Golf 1, Honda Accord, BMW E21/E30, Mercedes-Benz W124, Peugeot 504/505 etc. The carburettor engines are still available from their respective dealerships.

I've just shipped a brand new crate carburettor engine to Ghana, a 1.6 carburettor unit for a 1989 Vauxhall/Opel Cavalier.

Ikenna351:

The main problem is that he seems not to acknowledge that he created the problem and brought it upon himself.

Ikenna.

icemann:

If you don't have something nice to say please don't post.

Ikenna351:

Yes, absolutely, it is.

You buy a can of petrol, pour it on you vehicle and ignite her. After the car burn finish, you come to me to complain you don't have a car anymore. What do you expect me to say to you? Sorry?

Ikenna.

Ikenna351:

And your point is?

Ikenna

Siena: Besides the obvious fuelling issues, the Dodge Caravan is a heavy beast - long, wide, with a larger glass area. The 2.0 Toyota engine will be overworked.

What gearbox was used in this "installation"? Because without an adapter plate (custom) the 2.0 I4 Toyota won't bolt up to the Dodge 3.0 V6 bellhousing. If the Toyota's ECU and harness was used, the ECU won't communicate with the Dodge's TCU.

@ Ikenna: Carburettor engines can still be bought, either used, factory refurbished or brand new. Examples are the VW Golf 1, Honda Accord, BMW E21/E30, Mercedes-Benz W124, Peugeot 504/505 etc. The carburettor engines are still available from their respective dealerships.

I've just shipped a brand new crate carburettor engine to Ghana, a 1.6 carburettor unit for a 1989 Vauxhall/Opel Cavalier.

Seun: Is this helpful?

icemann:

And you are defending your post. Can't you see your bad use of English from the earlier post?

Ikenna351: If we are to go with the content of your post, your "NEW" Toyota engine must be an EFI engine then, because I don't see where one can still see a brand new fuel carburetted engine buy on this planet Earth. Unless you got it from Mars, anyway.

If truly the engine is EFI, did that clown that did the electrical part of the conversion thinks that the engine wiring harness would be a simply drop? Was the harness installation done with the new toyota engine wiring schematics? What made him think the two injection systems are the same?

I may have sounded harsh here, but the nature of this thread called for it. Simple, revert your car how it was when you got her, if you truly want to use that car. If the original engine has failed, find the exact engine for replacement.

Take it from me, if you continue to use that car in the present state, that your NEW Toyota engine will die before you even recover from your present nightamre. It's your call.

Ikenna.

icemann:

If you don't have something nice to say please don't post.

Siena:

Bro, it's not about being nice. Nice isn't factual. Being brutally honest is. We all learn lessons, sometimes very harsh. But, we learn from them, and don't make the same mistake.

I'm pretty sure Henry has learned the hard way, and won't repeat this in future.

My advice remains the same - get the correct engine fitted - assuming it's still possible. The "mechanic" could well have chopped up the original engine harness, chopped the chassis / front subframe to make the alen installation "fit." Making the process almost irreversible.

If this is the case, then it's probably best Henry sells his Dodge off as it stands, and cut his losses. Spending more on it, in my humble opinion is akin to throwing good money onto a bonfire, and watching it burn.

icemann: As we can all see the OP is in regret, making fun of him is not constructive and that won't help his morale. I guess the idea of this forum was to give USEFUL advice.
(Ref to Ikenna)

Henry Raphael:


Oga Ikenna,really one may say i didnt ask before going into it,i did,go to Ladipo,they will tell you,that Dodge engine is not reliable besides mechanic runs from them,just convert to toyota that is more reliable everybody knows,i bought everything brain box,engine and gear box,now i newly change the fuel pump,though i told him to use toyota fuel pump,but he said no.may be there is something he didnot connect well,that makes it to blow by if raived,He said something of breathing of air difference,you have handled issues bigger than this here,i have been reading your post,there is no catalyst converter,no 02,no air filter,can all these be d issue of weak power unless i tarp it small,but blow by if raived.

Ikenna351:

I wasn't suggesting you should have come to Nairaland to find out if such conversion would work. Besides, you just confirmed what i believed made you do such conversion: V6 vs I4 Nigerian mentality; Toyota engines are the most reliable, etc.

You just confirmed, also, what i stated above. You made it obvious in your above post that the wiring conversion was not done with the wiring schematics.

How could one set up an EFI system without o2 sensor in the system? And to make matters worse, no Airfilter? What specie of clown did that conversion biko nu? How on Earth would the AFM, MAP or MAF do its work then in the absence of Airfilter box or the any form of air intake?

Engine wiring conversion is not a drop swap. It has to be modified to work with the Engine ECU and some of the engine components that will need +ve supply from battery via relays. Most ECUs will have more than 1 ground supply to manage the engine properly. Were they all grounded?

How could one downgrade from 3.0 L to 2.0 L without considering that both fuel pump may have different psi for the fuel injectors to work properly ? Was the repair manual of both engines "consulted" to find out what psi the fuel rails of both engines require to run? What about the FPR of both engines? Do they hold the same amount fuel pressure?

Like i have been singing, the mechanical part of conversion is not where the problem is, but the electrical one. If you had swapped in a fuel carburreted engine instead, this thread may not have been created.

Yes, i have handled issues more severe than yours before. My Baby is a good example. But i can't help without wiring schematics of both engines in your case.

From what you have explained above, an abuse, on the highest order, was metted on that car. It was a terrible electrical conversion.

Well, if you have the schematics, you can start by installing and connecting all the missing injection components, if you really want to run that engine in that car. That's a start.

Ikenna.

Siena: Henry, do you know if your mechanic used all the Toyota engine wiring? As well as the ECU?

The fuel pump won't be the culprit here - EFI fuel pumps supply fuel in excess of the engine's requirements, the system pressure is determined by the FPR, (Fuel Pressure Regulator) with the excess being returned to the fuel tank.
If anything, it sounds like the engine's over-fuelling. Getting too much fuel, which will make the motor run like a dog at low rpm, but will be okay-ish at higher rpm.

So it's difficult to drive slowly, you push the gas, the car feels it doesn't want to pick up. Push almost to the floor, and the car picks up rapidly, too sudden for you to react to at times.

Is this what's happening?

Running without an air filter is bad news too, that needs to be sorted out. The MAF (if there's one fitted) must be confused as hell.

What year was the Toyota 2.0 engine (the donor car)?

No oxygen sensor either? All these missing parameters need to be addressed.

tommysparks: Henry check your mass airflow meter it might just be dirty or bad, and scan d car maybe your engine coils and plug caps are bad too.

tommysparks: Henry check your mass airflow meter it might just be dirty or bad, and scan d car maybe your engine coils and plug caps are bad too.

earthrealm: well if what u say is true...then it might be just a simple problem of dirt getting into the wrong place.......[that's why it isn't good to let ur fuel get low],
but from ur history...the car has a carburettor [sic] now, not an injector...so the issue of clogged nozzles shud be low/non existent