While driving my 94 ranger with MT, 2.3 4 cyl., it would all of a sudden accelerate in all gears. Is the EGR valve worn out?

 

you should get the codes pulled before doing anything else.

 

I couldn't pull any codes....the negative cable on the battery was removed. I heard an air leak coming from the area of the fuel pressure valve (attatched to the fuel injector assembly) so I replaced that and the leak did not disappear. Is it possible that the fuel injectors give off an air leak? I am not sure? I am trying to find this air leak and was wondering if there is someone here that may have experienced, on several occasions, possibly an often a well-known area, where this leak may occur? The 2.3 engine has 138(+),000 miles on it. Also, I just learned that you cannot bleed the rear brakes because of the RABS solenoid/valve. After replacing the pads, springs, cleaning the pistons and cleaning the brake lines out by forcing 100 percent alcoholthrough them, on my newer 94 Ranger, (this info. is for relevance, and I am the sole owner), they introduced the newer RABS soleniod/valve (it looks like a block and not a cylinder). I was told that I could not bleed the rear brakes on my own and that it would have to be done at the dealer while hooked up to the computer. That's messed up, I like to bleed my own brakes. ANY SUGGESTIONS WOULD HELP. By the way, I had a dealer replace the rear brake pads the last time.

 

if you have an leak, hook up a vaccum gauge to the manifold. you could also try spraying carb cleaner or TB cleaner in the area of the noise and if the engine spits and spudders, you found a leak.

 

Do you have 4 wheel disc? I am surprised that you are being told that you cannot bleed the brakes yoruself. My daughter has a 97 Ranger with rear drum brakes and I had no problem bleeding her brakes. I also have a 96 Explorer Sport with 4WD and 4-wheel discs. Again, no problem bleeding the rear brakes. Perhaps it's a problem on earlier years.

 

I've never heard about not being able to bleed the brakes because of the RABS valve.

 

Well if Ken's never heard of it, and I've never heard of it, and nobody else piped in to say they had heard of this - I'm inclined to think it's BS. Who told you you couldn't bleed your rear brakes because of the RABS valve? Hope it wasn't the dealership's service department.

 

I went to Firestone about the brakes and they said that liabillity issues are involved when bleeding RABS brakes. I will eventually end going to a dealer to resovle both, the involuntary acceleration and brakes.....I want to do this on my own and save a big bundle of money.

 

By the way, when your bleeding fluid to the brake line from the RABS solenoid, would I have to turn the key in order to supply voltage to the valve in order for the valve to open to let the fluid pass to rear brakes?

 

OK,OK, I found out from a Ford brake specialist that the RABS soleniod is frozen. That is why no brake fluid is getting past it. He said it is supposed to be an easy conventional bleed. That part costs somewhere in the neighborhood of about $186.00. He had also asked if I had ever had the engine hooked up to the computer at the time the "SERVICE ENGINE SOON" light came on. I said "no" and that, "I did all the repairs". When he wink at the time I said "no" this indicated to me that the computer recalibrates the E.C.C. and it then, therefore, recalibrates everything else. HMMMMMM. I think I'll stick to the older cars, since they don't have all that electronic crap hooked up to it. J/K.

 

Let us know how things go with the repair.

 

i had accelleration issues.. when i went to shift it would be attempting to put rods through the hood. I wasn't that it just accellerated for no reason..it would just stay floored. My fix was to remove the floor mat that was jamming the pedal.

Maybe you are missing a return spring?
maybe cruise control has bugs??

jr

 

I found the problem with the involuntary accleration. It was the potentiometer that was attatched to the choke from behind the carburator. I don't care to earn points, because I am not AIT. I just a penny pincher trying to keep my family from starving.

 

I found the problem with the RABS valve when I tried to bleed the rear brakes. I had replaced the master cylinder because of a legitimate reason. It was because of the plunger, (I don't know what the proper name is because I am not an AIT), located at second port, was worn out. After replacing the whole master cylinder, (about 80.00), then I trouble shot the RABS valve. I took the valve apart and found the rest of plunger, (rubber), and corosion was the cause for blockage and seizure to the valve. I had to replace the RABS valve (185.00). Bleeding is next. I would like to be an AIT. I would study real hard for it, but for now I am living the hard-knocks life. Thanks for the kind gestures and helping a guy thats always down his luck. (which is something I never believe in)

 

Nice work there!!!!