gas02

My Bronco was running well then nothing.That morning when I would rev the motor it would make a quite whine like a turbo whine ( it doesn't have a turbo.) later that day the check engine light started flashing, I didn't think anything of it because the guy I bought it from said it would come on from time to time. Stil it was running fine. That night I parked left it running and ran iside real quick when I came out I heard it missing in idle so I tried to get it home. Got about a block and it started to die, if I kept it above 1500rpm I was ok but couldn't do it. When it died all the lights were on the battery was strong, but a kind of rev when i tried to start it. Not the click of a dead battery. Things that I have thought of...Alternator..starter ...or O2 sensor...any help would be great.

HSE2

Welcome to the site mate. I does sound a bit like a slipping alt belt, but it could be so many things. Are you saying it won't start now? It will turn over but won't fire? Is that right?

gas02

Right now it doesn't even turn over. The only reason I don't think it is the alt is the fact that it didn't drain the battery at all.

HSE2

Ok I am going to see If I can't get some of the tech guys in the australian section to have a look at this!


I reckon they will to know what engine we are talking about!

anakha

First things first. Get yourself an LED testing light to find out what error codes the EEC has stored in memory.

Fairly simple to make one. All you need are a 12v LED, 1 resistor (cant remember ohm offhand) and some wire. If you dont have one you should get your hands on a book that lists the diagnostic codes and procedure for your model Bronco as well as building istructions for the test lamp. If its an EEC-IV vintage you will probably find a couple of connectors in a corner of the engine bay which is where the test lamp will plug in.

Xyphoid

Yep.... Check what the Error codes are.
The Resistor value should be about 560 Ohms.
Also what is the EEC Model ?????
Ie EECIV or EECV.

If its an EECV, then the error codes that these things produce can be common across the range (I think, dont quote me on this).

Here is a site on the EECV, that has some information on the sensors and features on the EECV
<A HREF="http://vehicle.me.berkeley.edu/mobies/powertrain/engine_mgmt/EECVp1-2.html">http://vehicle.me.berkeley.edu/mobies/powertrain/engine_mgmt/EECVp1-2.html</A> Unfortunately, this doco doesnt have the error codes, but I could try and get them for you if you are interested.

Not too sure about the EECIV though. (I.E. if the error codes are consistent with say a V8 Falcon ??????) None-the-less, Ive got the Falcon ones, which may be of assistance to you.

Send me an email if you are interested.

Xyphoid

Sorry, I goofed on the HTML. (Didnt realise it was OFF)
The EEC-IV link is

http://vehicle.me.berkeley.edu/mobie.../EECVp1-2.html

gas02

I really want you all to know how much your help means!!! You guys may have helped me find out it is a $9.95 volt reg rather then a $160 alternator.

PURSUTE

just a thought,

if there was a whirring noise before the motor stopped, could it not be the starter solonoid stuck on, followed by a fried starter?