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davec
Dodge Dakota
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1/04/2006
12:57:17
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 Subject: RE: Cleaned throttle body...trouble
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Di-electric grease actually helps carry the voltage. This is a tough problem without being n front of the vehicle. Try this. Pull the air cleaner of the throttle body. Put your fingers over the port that leads to the IAC (I believe in the top-rear of TB housing) See if you IAC is all the way closed. (It should be sucking air through that port and should be whistling slighty at 600rpm) If it is closed all the way...you have vaccum leaking somewhere.
dave
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GraphiteDak
GenIII
1/04/2006
13:00:12
| RE: Cleaned throttle body...trouble
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I'd check battery/voltage/charging. Weird sh*t happens when it's not right.
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bykerdude59
Dodge Dakota
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1/04/2006
13:26:24
| RE: Cleaned throttle body...trouble
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Davec: I did that the other night. It is sucking a lot of air through there.
GraphiteDak: My battery is new (about 3 months old) the battery cables are new as well. I will check out the alternator tonight, but have no signs of not keeping up.
I am hoping someone local is reading this and could come take a look at my truck and "throw me a bone"
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Rustywrenches
Dodge Dakota
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1/04/2006
15:17:11
| RE: Cleaned throttle body...trouble
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Check fuel pressure and volume!
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davec
Dodge Dakota
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1/04/2006
15:52:45
| RE: Cleaned throttle body...trouble
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Thank you rustywrenches...I agree!
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bykerdude59
Dodge Dakota
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1/04/2006
16:04:38
| RE: Cleaned throttle body...trouble
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Message:
Question on that fuel pressure and volume.
Could my fuel pressure (off the fuel rail) be fine at idle, but when I got to accelerate under a load be under pressure? i.e. at idle or in neutral be 50psi, but while driving it is only 40psi? How would I know if the fuel pump is going out? just by the idle fuel pressure? Would my pcv valve cause these problems?
Sorry I am pulling for strings, and everyone here has given lots of input. thanks
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davec
Dodge Dakota
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1/04/2006
16:09:44
| RE: Cleaned throttle body...trouble
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You have exactly described fuel pressure and volume. You might have 45psi at idle...but when the demand for more (greater volume) fuel arises, the pressure just simply can't keep up...then you lose volume and pressure, and your engine runs crappy.
dave
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bykerdude59
Dodge Dakota
JOIN HERE
1/04/2006
16:14:35
| RE: Cleaned throttle body...trouble
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So how would i go about measuring the fuel volume?
One more thing, I noticed last night while bull riding (bucking) on the freeway. My cruise control doesn't work anymore. It work last week before all this mess. Does that offer any clues...or just another problem?
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Kowalski
GenIII
1/04/2006
16:15:38
| RE: Cleaned throttle body...trouble
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You said the problem got much worse after you worked on it, but it doesn't sound like anything you did would affect fuel pressure or volume - so you're probably better off focusing on what you've changed. Did you try to adjust the distributor setting ? Rather than changing the timing as this would do on the older motors, that could screw up your fuel injection pulses.
Lead, follow, or get out of the way
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bykerdude59
Dodge Dakota
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1/04/2006
16:20:41
| RE: Cleaned throttle body...trouble
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I am not comfortable enough to mess with any distributor settings..so in a word no I did not. I strictly removed my throttle body and sensors and cleaned the heck out of it. Replaced cap (brass tips), rotor (stainless steel contact), plugs (autolite 3923 same as before), and wires (bosch 8mm).
The problem had been there slightly before on initial acceleration...but no where near this bad, now it is all the time. There is hardly any wiggle in the rotor either (less than 1/8")
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davec
Dodge Dakota
JOIN HERE
1/04/2006
16:25:02
| RE: Cleaned throttle body...trouble
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What Kowalski is referring to is known as "fuel sync", basically fuel timing, not ignition timing. You would need a DRBIII to set this and it should be set to fluctuate between "0" and "-1". Most dealers don't even know how to do it. It should be done with EVERY intake manifold job. The usual symptom of fuel sync being out of spec. is slight pinging. Unless someone went ahead and turned the heck out of the distributor. Find out what you have for fuel pressure and volume before going any further. Get the "basics" out of the way. Air, fuel, ignition...the basics.
dave
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bykerdude59
Dodge Dakota
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1/04/2006
16:29:43
| RE: Cleaned throttle body...trouble
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How do I measure fuel flow? I have never seen a flowmeter at autozone or pepboys.
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Kowalski
GenIII
1/04/2006
16:36:17
| RE: Cleaned throttle body...trouble
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Shouldn't be the fuel sync if you didn't screw with it then. Did you try putting the old ignition stuff back on to see if one of the new components was faulty ?
Lead, follow, or get out of the way
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bykerdude59
Dodge Dakota
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1/04/2006
16:38:00
| RE: Cleaned throttle body...trouble
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I trashed the old rotor, wires and plugs. I pulled the cap out of the trash before the trashman came so I could show my buddy how bad it was. I only have the old cap.
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davec
Dodge Dakota
JOIN HERE
1/04/2006
16:39:05
| RE: Cleaned throttle body...trouble
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Remove your fuel line from the rail. If you need to know the correct way I'd be glad to explain it. Find a clear gallon jug and put the fuel line inside. Have a buddy turn the key to on...and see what comes out of the line. You should get a good stream of fuel until the pump shuts off. Next, if you can, pop the black cap off of the fuel pump relay so you can close the contacts by hand. With the line still in the jug and the key on...close the contacts and watch the fuel stream. It should be a solid smooth stream. Let the pump run a little, if it stays smooth, you should be good...if it spits and sputters...you have a fuel volume problem.
dave
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bykerdude59
Dodge Dakota
JOIN HERE
1/04/2006
16:45:12
| RE: Cleaned throttle body...trouble
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I am assuming the fuel pump relay is under the hood in the "fuse" box. I will take a look at the fuel line tonight to see if I can get it off.
Thanks for the info. I would hate for it to be the fuel pump, but would be happy to have finally found the darn problem. I will try this all when I get home tonight. Any other suggestions let me know so I can hop to it tonight, I am all ears.
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davec
Dodge Dakota
JOIN HERE
1/04/2006
16:54:20
| RE: Cleaned throttle body...trouble
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When you pull that line off, make sure you relieve the pressure on the fuel system. An easy way is to remove the gas cap. Remove the test port cap (test port at the fuel rail). Hold a towel by the test port and push the bleeder valve in with a screwdriver to release the pressure. If the truck has been sitting, pressure should be minimal, if you just shut it off...BE CAREFUL.
Fuel Pump relay will be in the fuse box...they'll have it marked on the diagram on the underside of the box cover. Good luck...
dave
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Jecht
Dodge Dakota
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1/04/2006
18:42:41
| RE: Cleaned throttle body...trouble
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could the gasket on the TB be bad? did yo ureplace the gasket after you cleaned the TB when you took it off?
what about the fuel filter.
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bykerdude59
Dodge Dakota
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1/04/2006
19:20:50
| RE: Cleaned throttle body...trouble
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Yep I replaced the gasket with a new one from PepBoys.
Funny thing is that the gasket packaging said for a dodge 5.2 or 5.9 years '??-'97. Mines a 1999. The gasket seemed to be the correct one though.
The material is Felpro if that makes a difference.
Fuel filter is inside the tank with the fuel pump. Going to try and check the flow rate tonight.
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Rustywrenches
Dodge Dakota
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1/04/2006
19:52:40
| RE: Cleaned throttle body...trouble
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Right on the money Davec!! I couldn't have given him better instructions myself. If Bykerdude59 would just check the pressure and volume - he will either confirm our suspicions or eliminate them.
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