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Old 11-03-08, 03:25 AM   #1 (permalink)
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Help me make my pussy happy again.

1984 Jaguar XJ6.

Ran when I bought it, and on the drive home, it stalled and eventually wouldn't start again.

Got it home, looked it over, and found nothing that wasn't a problem before.

Tested so far: Each plug wire gives spark, each injector is getting pulse from the harness. Nothing looks disconnected or disturbed. The engine cranks, but just refuses to fire. The inertia cutoff switch is down, working fine. The entire fuel circuit is well, DVOM and procedure tested.

I have an original Jaguar Service Manual, as well as a Haynes manual and AllData access. I plan to check compression and spark plug condition soon, and I have a new coolant temperature sensor and ari-flow meter on the way from Reboticon sometime soon here.

Here's something I found in my look over:



A loose plug down by the power steering pump. I traced it through it's harness, and came up here:



That little red circular thing mounted to the front there. I unplugged the connector and did a quick continuity test between the terminals there and my mystery plug:



A-yup. They connect. My question, wtf is that red thing, is it my problem, and where oh where does my mystery plug go?

Apologies for the picture quality. A friend has borrowed my camera so I had to use my cell phone.

Today, I took off the intake system, and behind the throttle plate I was attempting to clean, I found GAS! A HUGE pool of liquid gas!!

How?! I know the pistons are getting gas because I can smell fumes out the tail pipes... help?

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I honked for my life. No one came.
$80 to make a 3.5 mount for 91-92 Legends. PM me. For 93-95, PM jkurl.

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Originally Posted by DV8
I certainly don't want anyone seeking my approval; that would actually mean your getting somewhere with your Legends... I haven't seen any good shit in years except from the people whom I've collaborated with.
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Old 11-05-08, 12:04 PM   #2 (permalink)
insert witty remark here
 
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so you can't get started at all now? since it is getting air and fuel that means that the only thing left would be the ignition source. is it cranking at least? on my parents xj6 we had a problem kinda like this with the fuel pump. it would work for awhile and then stop turning over. some how the o2 sensor was making the car run way to rich so it wouldn't even start, i know it sounds odd but that is what it was. stumped the hell out of mechanic took a month to track the problem down.
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Old 11-05-08, 12:13 PM   #3 (permalink)
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The red thing is a relay. The question is for what?
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Old 11-05-08, 12:15 PM   #4 (permalink)
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I actually got it to run for about 10 seconds last night by playing with the coolant temperature sensor. I bought a new one today, and will install it when I get home. Wish me luck!

Oh, my fuel pressure regulator is leaking, too.
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Quote:
Originally Posted by dannymyboy View Post
I honked for my life. No one came.
$80 to make a 3.5 mount for 91-92 Legends. PM me. For 93-95, PM jkurl.

Wishlist:
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Quote:
Originally Posted by DV8
I certainly don't want anyone seeking my approval; that would actually mean your getting somewhere with your Legends... I haven't seen any good shit in years except from the people whom I've collaborated with.
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Old 11-11-08, 02:26 AM   #5 (permalink)
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We tested the air flow meter today, and found it to be faulty. Resistance is supposed to gently sweep between .4-6 ohms, but as tested, it jumps erratically around the gauge.
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Quote:
Originally Posted by dannymyboy View Post
I honked for my life. No one came.
$80 to make a 3.5 mount for 91-92 Legends. PM me. For 93-95, PM jkurl.

Wishlist:
Gold JDM/EDM grille

Quote:
Originally Posted by DV8
I certainly don't want anyone seeking my approval; that would actually mean your getting somewhere with your Legends... I haven't seen any good shit in years except from the people whom I've collaborated with.
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Old 11-13-08, 01:31 AM   #6 (permalink)
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When are you getting the radiator repaired?

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Old 11-13-08, 01:32 AM   #7 (permalink)
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...huh?!
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I'm quicker than the cure, I'm sicker than the illness.

Quote:
Originally Posted by dannymyboy View Post
I honked for my life. No one came.
$80 to make a 3.5 mount for 91-92 Legends. PM me. For 93-95, PM jkurl.

Wishlist:
Gold JDM/EDM grille

Quote:
Originally Posted by DV8
I certainly don't want anyone seeking my approval; that would actually mean your getting somewhere with your Legends... I haven't seen any good shit in years except from the people whom I've collaborated with.
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Old 11-13-08, 01:35 AM   #8 (permalink)
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^^ i think he is talking about the rust on the radiator
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Old 11-13-08, 01:44 AM   #9 (permalink)
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At the risk of changing topics completely (since I really think it's unrelated to your starting issue), what terminals on the bright red relay is the mystery plug running to, and what's else is in that area.

Random connector hanging out at the front end, my hunch says fog light.
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Old 11-13-08, 01:55 AM   #10 (permalink)
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It doesn't have foglights, and as far as I know, they never did?

And I'd have to recheck the leads again, and the car is at work. >.<
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I'm quicker than the cure, I'm sicker than the illness.

Quote:
Originally Posted by dannymyboy View Post
I honked for my life. No one came.
$80 to make a 3.5 mount for 91-92 Legends. PM me. For 93-95, PM jkurl.

Wishlist:
Gold JDM/EDM grille

Quote:
Originally Posted by DV8
I certainly don't want anyone seeking my approval; that would actually mean your getting somewhere with your Legends... I haven't seen any good shit in years except from the people whom I've collaborated with.
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Old 11-13-08, 02:44 AM   #11 (permalink)
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Quote:
Originally Posted by The Crowing View Post
It doesn't have foglights, and as far as I know, they never did?

And I'd have to recheck the leads again, and the car is at work. >.<
Yeah, I wouldn't worry about it.

If it were fogs I'd expect two random plugs (one on each side). When I looked at the pic again today it just had a vaguely familiar look so I figured I'd mention it.
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Old 11-13-08, 09:15 AM   #12 (permalink)
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I got a slightly different way of going about diagnosing things like this..

Id start by pulling the fuse from the fuel pump (assuming it is not the same fuse for injectors)

Then id crank it for a bit to get all that fuel out from behind the throttle body.

Then id spray starter fluid into the intake and see if i could get it to start with starter fluid. If you can, it means you have a problem with FPR or some crazy wiring problem causing it to run excessively rich on startup.

I have not returned this crazy MAF sensor with 8 pins yet. If you tell me where to put power and ground and where to measure voltage ill test its output and see if it is better.. (output should be constant since sensor would be out of car)

Did ya get all the parts i sent yet?

Test the red thing by following Jags terminal identification. Power and Ground to two terminals, power to another and output from a 4th. Run jumpers to the 3 you need wired and then test output on the 4th.
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Old 11-13-08, 11:30 AM   #13 (permalink)
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Thansk for the advice, and that's a really good idea.

Yeah, I got all the parts and they are sitting with the car, awaiting use and testing.

Time to scrounge AllData!
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I'm quicker than the cure, I'm sicker than the illness.

Quote:
Originally Posted by dannymyboy View Post
I honked for my life. No one came.
$80 to make a 3.5 mount for 91-92 Legends. PM me. For 93-95, PM jkurl.

Wishlist:
Gold JDM/EDM grille

Quote:
Originally Posted by DV8
I certainly don't want anyone seeking my approval; that would actually mean your getting somewhere with your Legends... I haven't seen any good shit in years except from the people whom I've collaborated with.
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Old 11-13-08, 12:47 PM   #14 (permalink)
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Don't worry about the leaking FPR, Jags love it when they do that. Please tell me you got that car for next to nothing.
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Old 11-13-08, 01:15 PM   #15 (permalink)
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Picked it up for $350.

Been talking with an appraiser. After new paint and repairs, it will be worth $8000 next year when it becomes a classic.
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I'm quicker than the cure, I'm sicker than the illness.

Quote:
Originally Posted by dannymyboy View Post
I honked for my life. No one came.
$80 to make a 3.5 mount for 91-92 Legends. PM me. For 93-95, PM jkurl.

Wishlist:
Gold JDM/EDM grille

Quote:
Originally Posted by DV8
I certainly don't want anyone seeking my approval; that would actually mean your getting somewhere with your Legends... I haven't seen any good shit in years except from the people whom I've collaborated with.
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