2.9L Heads

[SuperRob]

MAKG, Can you confirm that the braided strap from the drivers side head (at the back) gets grounded to a wiper motor?

The orange ground you talk about I believe is the one I found in that wiring harness. Off the distributor....shared with the injectors.

 

[MAKG]

It certainly goes NEAR there, but I always thought it went to the firewall.

I never disconnected that one.

 

[SuperRob]

Well, I used to OWN my truck...but apparently these days I'm being BY my truck, and it doesnt feel very good at all.

That braided ground strap looks like the only place it can reach is that wiper motor ground bolt. However in the 4 years I've owned this truck its never been attached there, and I definitly didnt take it OFF of there when I took things apart this time. I'm just positive that its been attached to the back of the upper intake plenum this whole time, and it worked before, so it should work again.

The upper intake itself has continuity with the negative post on the battery, so as far as I'm concerned...a ground is a ground is a ground right?

Next thing, That orange wire you were talking about. I found'er alright. But for the life of me I cant see where it would bolt onto the drivers side head!!! Its reasonably short, which implies that it goes to the back of the head, but I didnt disconnect anything from the back of that head when I took the original off! I'm looking at the original from that side and theres nowhere that I'd have undone it from with the exception of one bolt hole that still has the bolt frozen in it. Clearly I didnt take it out! Where else could it go?

Next thing. With the key on, if I turn the distributor I hear a clicking sound like a relay but they come from 2 spots. One from the power distribution box (passenger side fender) and the other from the distributor area (but I cant tell where) sometimes one of these clicks is followed by what sounds like a pump priming up (but again I cant tell where it is due to background noise and trying to manipulate the distributor and listening all over the place all at once.) Does this sound normal to you guys? Should I be hearing these noises or should I be preparing to look for bad wires? WHATS GOIN ON?!?!?! I hate this! Trouble shooting SUCKS why couldnt it just work right the first time for me!

Thanks All

 

[MAKG]

Remember, the heads are identical. So if you want to see where the holes in the back of the passenger side head are, take a good look at the FRONT of the driver's side head.

In principle, the arc firing between the rotor and dist cap will make a noise, but I'd expect it to be too faint to hear. Is this a new dist cap and rotor? Are all the plug wires pushed ALL the way on? The fuel pump relay is in the PD box, and I suspect you're hearing that as well as the fuel pump.

 

[SuperRob]

Remember, the heads are identical. So if you want to see where the holes in the back of the passenger side head are, take a good look at the FRONT of the driver's side head.

Thats exactly what I did. I also looked at the exact head that I took off of the passenger side and like I described, found only one possible location to bolt it to, but that I had never taken the bolt out of there, so it couldnt have been connected to that spot.

In principle, the arc firing between the rotor and dist cap will make a noise, but I'd expect it to be too faint to hear. Is this a new dist cap and rotor? Are all the plug wires pushed ALL the way on? The fuel pump relay is in the PD box, and I suspect you're hearing that as well as the fuel pump.

I'll double check all the connections there, It'll likely wait till Friday afternoon though, I have a stats test (final) on Friday morning, and it takes priority.

I still dont understand why rotating the distributor would activate the Fuel Pump relay....

Thanks

 

[MAKG]

The fuel pump relay is supposed to be energized for two seconds after the last ignition event. The two seconds is to prime the fuel system, and the after the last ignition event thing is to keep the pump running while the engine is. It's normal.

 

[SuperRob]

WOAH!!!

COOOOL!

Thanks. I've got a renewed hope!!!!

Will update on Friday

 

[SuperRob]

So I'm back to the grind here.....not winning.

I've started a post in the Electrical forum, its more relevant than continuing this one.

Thanks!