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  #16  
Old 03-07-2011, 01:15 PM
expidition200 expidition200 is offline
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Default Re: I need help! 1989 2.9 v6

thanks purchased new regulator fuel preasure around 34
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  #17  
Old 03-07-2011, 02:36 PM
Psychopete Psychopete is offline
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Default Re: I need help! 1989 2.9 v6

that's pretty normal; good deal. might consider changing out your fuel filter too if you haven't done so in a long time. Just one of those maintenance things that we forget about at times.
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  #18  
Old 03-08-2011, 08:02 AM
camador camador is offline
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Default Re: I need help! 1989 2.9 v6

Quote:
Originally Posted by Psychopete View Post
Yes, the fuel pressure reulator diaphram has ruptured. Gas is leaking right into the upper intake manifold. Be sure to change oil and check #6 plug. Closest to the FPR vacuum nipple so the back cylinders are front in line to suck in all of that leaking gas.

camador - too much going on in this thread. Any chance I could talk you into starting a new one with all of the symptoms youre having? I think you will get far better responses with everything wrapped up in one thread.
Yup, will start a new one
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1989 Bronco II 4x4

2.9l EFI Stock
Auto Tranny
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  #19  
Old 03-09-2011, 06:44 AM
expidition200 expidition200 is offline
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Default Re: I need help! 1989 2.9 v6

Well it looks like iwill have to pull my gas tank,I have changed fuel filter twice within two weeks. Truck still running slugish. Fuel gage quit working last week. Truck sat for three years so theres no telling whats in that gas tank. Any suggestions?
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  #20  
Old 03-09-2011, 12:07 PM
RMZpilot RMZpilot is offline
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Default Re: I need help! 1989 2.9 v6

Be sure to check the fuel fill and other hoses carefully for cracks.
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  #21  
Old 04-03-2011, 11:39 AM
Earlyboomer Earlyboomer is offline
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Default Re: I need help! 1989 2.9 v6

Yes, there is a lot in this thread and a lot of it could be exactly what a bad THROTTLE POSITION SENSOR causes. Its right up front and easy to change, it is basically just like a volume control in a radio and they wear out.
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  #22  
Old 07-23-2011, 09:06 PM
rcw3023 rcw3023 is offline
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Default Re: I need help! 1989 2.9 v6

Just replace the (TPS) THROTTLE POSITION SENSOR
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  #23  
Old 07-24-2011, 07:14 AM
Earlyboomer Earlyboomer is offline
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Default Re: I need help! 1989 2.9 v6

How about the can type fuel filter after the frame mounted fuel pump, did you change that one also? I assume you were talking about changing the fuel filter inside of the plastic fuel filter before the frame mounted pump. Take a look, many people don't look far enough on this because they don't suspect there even would be a filter on both sides of the frame mounted pump. ( I didn't see it right away either.)
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  #24  
Old 07-24-2011, 07:35 AM
expidition200 expidition200 is offline
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Default Re: I need help! 1989 2.9 v6

Replaced fuel pump, preasure is at 40. Runs great !
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  #25  
Old 08-11-2011, 04:51 PM
hogstar hogstar is offline
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Default Re: I need help! 1989 2.9 v6

HI Ryan,
Take a look at my post 1986 missing and bucking--solved???
It might be worn throttle cable links, this causes the throttle plate to wiggle with the engine vacuum and the TPS sends bad signals to the PCM(computer).

Good luck.

gil
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  #26  
Old 08-14-2011, 02:33 PM
Earlyboomer Earlyboomer is offline
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Default Re: I need help! 1989 2.9 v6

Psychopete is right, there is a lot going on here. Lets go back to the engine with high mileage as an example. I might get a bit of this out of context, the "timing is right on", but there is another point to bring up. As you know the distributor is driven off of the camshaft and you can have the timing "right on" but the timing chain, even though it has those spring loaded guides supposedly taking up any stretched slack, some of these problems could because of a loss of synchronization of the spark timing and valve operations. So much was covered here, it hard to come up with anything, but this can be checked for. FIRST, remove the ground wire from the battery, then using a 1/2" drive ratchet and the correct socket, on the nut at the front of the crank holding the damper in place, and turn the engine in reverse with the distributor cap off, so you can see if the rotor starts turning right away or if there is a lot of lag. I have done this with V8s, so it can be done. Engine fans with fan belts turn clockwise when you are standing in front of the vehicles. (Serpentine belt driven fans could be reversed.) So, you want to turn the crankshaft counter clockwise while watching the distributor rotor. This is a judgement thing gained by experience. Another thing that you could do is to remove the water pump and visually check the chain and the gears. 2.9L V6s have a chain and the 2.8L has a gearset like inline sixes. If this is something you might want to try, don't forget to remove the ground from the battery and make sure you have the ignition off. This timing chain problem was a big problem witht he nylon covered timing gears that GM and Ford used in a lot of engines. Ignition timeing and valve timing have to work together, so maybe this is something that applies to some of these engines in this post. I am sure you can find the allowed play specification for the chain in the 2.9L in a manual somewhere. I put a waterpump in my 2.9L at about 80k and I saw a bit of play developing, I'll need to check it again someday. When you replace a stretched out chain in an engine, it is really a noticeable repair. Hope this "book" helps the thinking.

----------

When I wrote the reply about the timeing chain, this post didn't look like this. I hope I didn't get it out of place and that its found by someone it can help. The other blog was long, I guess it did need modified.
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  #27  
Old 08-15-2011, 01:25 PM
tiemann66 tiemann66 is offline
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Default Re: I need help! 1989 2.9 v6

I want to thank everyone for their input. Right now I have my ranger parked as I have a new ride. I still want to find out the problem so that I can sell it later. Right now the fule pump died so I can't start it at all. I also did an PCM work sheet and found that the SPOUT i beleive is under the 5-7 VDC it is sapposed to be. I don't have the work sheet in front of me but I think I was running around 4.3 VDC. Not sure if this is a problem or not. I checked both the connector at the distributor and at the PCM. I am going to replace the fuel pump soon and get back to the diagnosing of the problem. Again thanks for all your help!
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