my idle

[bloncobronco]

anyone got any pics on how to adjust my idle on my ford 93 bronco. i am super new at this and would appreciate your help. my truck keeps dying in reverse and when i am sitting at a stop light every now and then. please help i love this truck and dont want to give it up so how do i

 

[Justshootme84]

Welcome to Bronco Zone!!! I don't belive you can 'adjust" the idle on your 93 EFI (fuel injected) motor. If it's stalling or the idle is very low (below 500 rpm) or fluctuates, you may have a problem with the TPS (throttle position sensor) or a bad IAC (idle air control valve). Best solution to find out is to check for any trouble codes stored by the motor's computer. Any garage will do that for you, and some parts stores like AutoZone may check the codes for you for no charge. If any of the sensors are bad, they will "throw" a code to the computer. You can also pick up a Haynes 1980-1996 Ford F-series/Bronco repair manual for under $20 at the local parts store. The manual will explain the sensors and code system as well as help you with most problems you might have,

JSM84

 

[BroncoJoe19]

I believe that the idle is computer controlled and that you can not adjust it.

SO you may want to start with the basics... when was the last time your bronco had a tune up?

Pull your distributer cap, make sure the inside is clean of dirt, moisture, or oil/grime. Make sure the contacts are not pitted, if they are replace it, and the rotor.

Check your air filter.

Check your plugs.

If you just got the truck, change the fuel filter, this way you will know when it was last done.

I might get some dissagreement here... but it may be a good idea to throw in a can of some kind of fuel treatment to clean your injectors.

If this doesn't take care of your problem, check your plug wires.

Vacuum leaks could cause stalling as you mention.

IF none of this works out, then you will have to learn how to check for codes.

Good luck

joe

 

[Broncobill78]

Jeez, not much to add here. JSM & Joe pretty much nailed it. Late model Bronco's have processor controled idles and as such are pretty much non-adjustable unless you have an aftermarket programmer type box like the Hypertech Interceptor which I'm guessing you don't & quite honestly you wouldn't/shouldn't need for something like this. Do what the men said, ck for codes (any AutoZone will do it for you for free as well as many other parts stores) and then start w/the basics like plugs, wires, etc. Fuel additives are always a touchy subject so I leave that for the owner to decide. Cleaning th throttle body never hurts, if it's sticking open even a little it will throw the idle off and I'd also take a good look at ALL the vacuum hoses since they're much more important on late model engines. Don't really know what else to say, the carb is long dead so most of what anyone over 30 knows is non-applicable these days.