I really thank all that contributed on the topic,really then i did not get what i expected but NOW everything is in the right shape,I bought complete Air filter component and also flush out dirt in injector,did small electrical settings in the ignition coil.The van is more than fine.I flog it everyday now.
Here in Nigeria really a lot of people are risk averse,we dont want to do something different,we believe doing things different way is abuse,we keep doing things commonly,let me put it this way,Before i venture into doing conversion,i did research,i saw countless Dodge van,chrysler,Landrover Freelander with Toyota Engine and gear even i saw Murano SUV fitted with 2009 camry Engine and gear because of Murano gear issue.But people will like to blame if something went a little bit wrong rather than advice.A lot of things can make a car not Accelerate well starting from fuel pump,dirty injector etc,which ordinary if not in a converted car we can advise here,but immediately we hear conversion we forget our best knowledge and all you will hear is,"Abuse", "sale it","get ride of it".replace with the same engine,to the point one will start feeling bad ever mention it here,then i asked If dodge engine is not giving problems or if our so called mechanics like working on them here,why will i thought of changing to what they know better,Last year i call a mechanic to come and check my plug,to my surprise he parked his tools and ran away,telling me ah! American car,only japanes.why is dodge van so cheap and you see them dumped in mechanic garage a lot,we can turn misfortune to fortune if we carefully remove MIS.Somebody said down grading from 3.0 to 2.0,yes and i have reasons,1st is our mechanic ideology,2nd fuel consumption,3rd usage.if is speed where am i speeding to,when i will be on go-slow starting from my office till i get to my house,just need something for moving within mainland and Island,not really for traveling but even,it can travel far.,my emphasis is mainly on reliability,economy and easy to work on,which Toyota engine has.
Thanks.

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

Sir,is injector and not caburettor,s[b]o the issue of clogged nozzles shud be low/non existent[/quote]
[/b] i dont understand what u mean here sir thanks.

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.

Thank you sir,when the mechanic finished the convertion,i sent my painter to go and pick up the van from Ladipo to Ikoyi,i just want him to first test it,which he told me that everything works fine,that he accelerated the van to the full the speed was ok for 4 plug.He is a different person because he doesnt have any reason to lie that is ok if is not ok.But the problem started when he finished painting and told me that there is no fuel,i told him can it be driven to filling station for fuel he said yes,on our way the car started miss behaving or blow bye,he said is because of fuel the tank is virtually empty.when we finished fueling i saw the excitement on his face he told me oga you can drive this van to east now no shaking.In the morning while going to oshodi on the third mainland bridge,i started noticing power drop,at times it will pick and raives high as if more than the present gear,which ordinary if it moved based on the raive,i will speed faster,i parked at oworoshoki because i felt that is may be plug,when i got to oshodi i call my mechanic that did the convertion,that was when he said is fuel pump,now i hard him saying yesterday that he put v8 fuel pump WHY?and and that he has changed the plug wires.The fuel gage is now at the half tank and i know i dont have up to half tank,even when i said something about air filter that is not there,he said it doesnt matter or may be i can go and buy aftermarket,without box,just fix it there,though i have seen that type.i dont know if the injector is dirty,i believe people might have come across this kind of issue,i dont know why mine is difficult to figure out.

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.

The car will always start immediately one hand,but when i raive it it will do as if there is not much fuel,like am having dirty plug something like that,then if i persist it will blow by then raise to the highest with blow by sound too,but if i put it on gear, i can never raive the engine it may quench,only just for me to tarp small then it will move slowly from there continue moving and keep changing gear,if i mistaken adjust my leg,it will miss fire,at times climbing of hill is always difficult,unless am on high speed.It does not respond according to the raiving of engine.Let me buy air filter 02 sensor etc to see if there will be problem.i was thinking that 3.0 fuel pump will be too much for 4s engine 2.0 or 1.8

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.

Thank you my oga,you are too much,am going there now to ask him all this question.every component is important,they will always say it doesnt matter,please i need more questions,if i can see you personally i think alot of issues will be dealt with,though am in Lagos.

Siena:

To get the best advice, why not mention the engine conversion? Or at least link your other thread?

My oga siena,i really need solution to this problem,even if am to sell the van atleast i need to give somebody good thing
'we dont pluck out the eye socket just because we want to remove sand.there could be other way to resolve this and you know it,just that when people hear convertion,they feel is something strange,i have seen passat engine in Danfo,even toyota engine in freelander of which you have seen here.the problem is between the mixture of air and fuel,the gear selects well and it runs well,but just at the raiving of engine.You have solved bigger issue here,i know what you can do,just that when you hear the convertion of a thing you take it as there is nothing you can do but there is sir,If fuel pump pumps well and injector does the work well and air and fuel enters appropriately what will stop the car from moving.

autodudez: From my experience in Nija as an Automotive proffessional i have come to the conclusion that the major problem we face which has caused many car owners lots of head ache frustration and money is proper diagnosis or troubleshooting of car faults.so let do proper diagnosis here.post your problems and lets solve it here and save you time money and head ache

Please what will make a car not to raive well,raive as if there is not much fuel,but it starts one hand,only need small tarping on accelerator to till it fully come up,i think something is hindering the power transmition especially on gear.please advice.

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.

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.

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.

Sir,i bought the complete engine and gear box together,the issue is that when i raive it on stationary it will do as if there is no much fuel,later it will raise to the highest,which i cant do while driving,is like is not getting good mixture of fuel and air in the combustion,the mechanic said the way toyota breaths air is different from dodge,thats is the area i want to solve.it want met to place my leg on accelerator small till when it will pick,but if it finaly picks,it runs very fast like mad.i just want to control the movement,give it power when i need it not to wait till when it will come on its own because i cant match accelerator hard.Please my oga dont be offended,you can still think out some solution to this,i notice that there is no catalyse converter,(they joined exhaust pipe direct to the one on the van,no 02 sensor,nor air filter,can all this cause this issue?What is this issue of breathing of Air?

nissparts: If anyone needs a pictorial description of this process, drop your email and I'll send it to you. It's a word document with pictures and too heavy to upload here.


Please sir send to babahenro@yahoo.com.


Please i really need you to know this,i converted my dodge caravan to Toyota 4s engine,they just joined the exhaust pipe direct to the engine,no catalyse converter,no 02 sensor,no air filter.now i cant even accelerate while driving, it will do as if it want to off,doing as if am driving without fuel,it cant raise to the full,climbing hill is war,i can only raive the engine if on stationary not while driving.i bought a new fuel pump,now the mechanic is saying that the way toyota breath air is different from how dodge breaths.please is there any thing i can do,they engine starts normal,but immediately i press accelerator it will start misbehaving i have to tarp it small to pick.

Please my people,i really need solution,i changed my dodge caravan engine 3.0 and put toyota 4s engine 2.0,because the dodge engine used to off especially on traffic light or when i slow down to enter a corner.The NEW TOYOTA ENGINE starts normal,but if I press accelerator it do as if it want to die even at times off,at a time it will pick,by the time i put it in a gear it can never be raise,unless i put my leg on accelerator small and be waiting for it to pick gradually,this thin happened the mechanic told me that my fuel pump is bad,i gave him N12,000 to buy complete fuel pump which he said he did,but the same thing is happening,if i join another road instead of it to answer me quick,because i cant press accelerator,for if i do it will off or doing as if am driving without fuel,the more i accelerate it the more it dies,unless i tarp it small.
Now mechanic told me that the way AIR enters the dodge and Toyota is not the same,that i can only be using it like that,then i told him
that since the engine is toyota is it not better i put the toyota fuel pump if possible buy toyota fuel tank, i want to drive the van normal,i dont want to be doing tarping,driving slorgishly people behind will be blowing horn rendering abuses for wasting there time.
Please any good advice,i have spent so much money already,if i said let me sell it, i cant get anything from.I know that the work there is just finishing,the new engine is good and starts any time,but the ability to sustain energy accordingly when i press accelerator.my email is babahenro@yahoo.com,incase some body want to advice me directly thanks.

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