Ignition problem Bronco 302 -89

[The Swede]

Can anyone PLEASE help me,i'm in distress for the moment

After reading some topics on this forum iv'e come to understand that the TFI ignition module can be faulty when no spark is detected.

I have an 89-model and as far as i can tell there is no tfi on this truck,so what's going on whiht it?

the truck ran perfectly until i turned the engine off at my lockal gasstation,when i came out the engine turned,but did'nt start so i toed it home and un screwed one of the sparkpluggs...no spark

Can it be the eec,coil or distributor?

The Ecc is werry hard to come by here in sweden so i hope for the best

So come on now and help a trubbeled swede...

Sry if my spelling and gramma is not correct /emoticons/[email protected] 2x" width="20" height="20" />

 

[BLADE262US]

Hello being an 89 your truck should be fuel injected and it would have a TFI module , It should be right on the side of the distributor looks kinda grey in color and has a plug at the front of it with wires coming out , There is an exception to this though some models had a remote mount TFI unit so the distributor just had wires coming out of it and into the harness then if you look on the drivers side fender kinda tucked way down youll see this thing that looks like a standard TFI module ( except its black ) mounted to an aluminum heat sink . Thats where it is if its a remote mount . Hope that helped /emoticons/[email protected] 2x" width="20" height="20" />

 

[Shadow_D]

One more thing you should check.

I just fixed this problem with my 90, when you turn the key to the run position do you here the fuel pump pressurizing the system? If not find the relay on the driver's side fender well and tap it a few times.

I know you don't have spark and the module is part of that problem. I think the fuel relay may have something to do with that.

History:

My 1990 backfired through the throttle body taking out the distributor, TFI module, Fuel pump relay and timing chain.

I had to replace the TFI module twice before I replaced the fuel pump relay now everything works fine.

My thought:

I think the relay works with the TFI module to control the spark. If the relay is bad it might take out the module.

I might be wrong and it could be a coincidence. If I am please, someone let me know.

Good Luck

 

[The Swede]

So Shadow D..u think that the pumprelay may have something to do whith the ignition?

Can't figure out how..but i'll check that aswell

Another Q i have

Cant locate any type of fuse to the fuel-pump or anything thats even close to the ignition..under the dach there is no fuses at all for any of the systems,is the fuses located elsewhere?

On the driverside fender there is a(i guess) sort of diagnosticbox mounted together whit some relays

can i get anything out of this box that can help me?

Is it a common fault that the eec-box mailfunktion?

I have installed a hypertech powerbox to my eec.

As far as i can understand this problem,if the ecc mailfunktion the ignition shoud work anyway by some percalculate values by the tfi

 

[BLADE262US]

Theres a ********* box under the hood on the drivers side that has a bunch of fuese in it . /emoticons/[email protected] 2x" width="20" height="20" />

 

[Seabronc]

An EEC box failure is rare. What is the availability of parts? The fuel pump relay has nothing to do with the ignition system other than supplying fuel. If you have definately determined that there is no spark, then first suspect in my openion is the pickup inside the distributor, then TFI, possibly the coil (though I would have expected some problems prior to the complete failure from a coil).

You are correct about the TFI being able to run the truck without the EEC. If it doesn't get a Sprout signal it will set a fixed timing for the engine. I am attaching a diagram of the ignition system and a troubleshooting proceedure.

Good luck,

>-

 

[The Swede]

thx Seabronc for the pics

All of the "usual" parts exept the coil have been changed recently...waiting for a new coil,shoud arrive sometime this week

the access of american parts in sweden is ok,but i always have to order..nothing that my dealer have in stock

Sry for all my newbie-q:s,and many thx for helping me

I'm not even "average" when it comes to U.s.-cars and trucks so my knoledge about them is werry limited.....hopefully just for the moment B)

have just one more q(for now)

What do the petrol cost in u.s.a. ? have heard that it is realy cheep

Here in sweden i pay 6.05 dollar for one u.s. gallon

 

[Seabronc]

have just one more q(for now)

What do the petrol cost in u.s.a. ? have heard that it is realy cheep

Here in sweden i pay 6.05 dollar for one u.s. gallon

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Right now in my area we are paying around $2.90 for 87 regular, $3.05 for 89 mid grade, and $3.15 for 91 premium. Most people are complaining about that. I think if the price of gas (petrol) goes up to European levels the economy would collapse because we are so highly based on mobility.

Almost everything about our economy depends on moving things and people around on wheels. Mass transit is given lip service but nothing is actually done about it. Most people decide to use cars because what mass transit that exists is already overloaded and some people just don't want to be tied to the train and bus schedules.

That is quite different from how things were here in the 1940's and 50's. Then most people lived and worked locally and trains moved most of the freight. You could walk or ride a bycycle to work. Now people tend to live remote from their work and large 18 wheel trucks move most of the freight.

The Federal government would rather put their money in what makes mega businesses money rather than solve some of the real problems right here. They would rather support the war industry than solve internal problems. If you have heard any of President Bush's speaches, he is determined to make everyone like a little DEMOCRATIC USA, "Himmel verbotent". I know it wouldn't do any good to remind him that this country started out as a Republic not a Democracy but we lost that in the early 1900's.

At the State government level, at least in my state (NY) that is, the governments only concern is how they can get more money by raising taxes while they waste it on bigger salaries, personal retirement plans, etc.

OOPS!! sorry, I got off on a personal Rant and Rave :blush: .

So any way that 6.05 per gallon that you pay must make it real expensive to drive a Bronco. Have you given any time into researching incresing gas milage? When gas (petrol) prices started to rise around $3.00 per gallon, I got off my lazy theoretical ass and started doing some serious looking into improving the gas milage of my truck. My goal is to get it over 20 US miles per gallon, which I believe achievable, time will tell. The first thing is to unload some of the power wasters from the engine like mechanical fan and water pump. I have done the electric fan conversion and now I am considering some electric water pump options. Also, I am experimenting with engine timing and fuel additive. My goal is not to make it into an economy car but just make it less expensive to drive and I LOVE > my truck. My wife refers to it as my girl friend /emoticons/[email protected] 2x" width="20" height="20" /> .

Good luck on your Bronco,

>-

 

[Seabronc]

PS

Welcome to the Zone > . *** some pictures and make up an album in the member Gallery.

>-

 

[BLADE262US]

I think gas is more in europe because they dont refine it there it has to be shipped in so you get the shipping cost added to the cost of the gas . Atleast thats what I herd somewhere . /emoticons/[email protected] 2x" width="20" height="20" />

 

[The Swede]

I think gas is more in europe because they dont refine it there it has to be shipped in so you get the shipping cost added to the cost of the gas . Atleast thats what I herd somewhere .  /emoticons/[email protected] 2x" width="20" height="20" />

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Then u can tell your sorse he's wrong

We have our own refinarys

the reason that we have this expensive gas is our goverment

The real price for one gallon is about yours,but then the gouvement adds an energy-tax and a 25%...eh...dont know the english word for this one..its a sort of tax that is on all kind of stuff...everything i buy have this 25% extra tax..anyway,we have in total about 90% in taxes on the standard price,thats why it's so expensive

The oil is pumped outside the cost of norway,so europe also have it's own oil

i've been told that in the us there is kinda the same tax,but it's payed by the car-manufactures,not the consumers

Btw..is 91 premium your higest octane?

We have 95,96 and 99 and offcorse the extremely expensive 102

No..we r getting way off topic here...a moderator will surley be upset or something

Will post some pics shortley on my truck

 

[Seabronc]

Btw..is 91 premium your higest octane?

We have 95,96 and 99 and offcorse the extremely expensive 102

No..we r getting way off topic here...a moderator will surley be upset or something 

Will post some pics shortley on my truck

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That number may represent differences in the way your octane is calculated. Octane numbers here are posted as an average of two different numbers which are determined using a test engine at two different speeds. The formula is called the (R+M/2) method. Your posted numbers may only be the R (research octane) portion of the formula that we us. The R portion of the formula we use for 87 is 91.

Ford engines since the late 1970's are designed to run on 87 (R+M/2) octane in order to comply with the environmental emissions laws with compression ratios in the 8.5:1 area. When we had leaded gas (petrol) the pump octane numbers were as high as 100 but I don't remember how it was calculated.

Many people I run into don't really seem to understand what the octane number actually represents or the relationship of octane to the compression ratio of their engine. Most seem to think that if they use higher octane their engine will run better or give them higher gas milage. They don't seem to grasp the fact that the number is a measure of resistance to detonation and that if an engine is designed for 87, running 91 may actually give them poorer milage since it will not burn as efficiently in their engine.

I guess since I'm a modrator I better stop taking this post further away from the original topic, which was what? /emoticons/[email protected] 2x" width="20" height="20" /> OK, so it just took the course of normal chat; one subject leads to another &lt

.

>-

 

[Shadow_D]

Well like I said "I might be wrong and it could be a coincidence. If I am please, someone let me know." I'm sorry for the wrong info.

As for the Petrol prices...

You can follow this link to see the current prices in my neighborhood

http://www.albanygasprices.com/

 

[The Swede]

Problem solved

it was the tfi-module as some of u guessed

So...thx,thx,thx,thx.thx so werry much

Think i'm falling in love whith you all )