D1 stalls, hard starts

ezzzzzzz

Well-known member
Apr 22, 2010
604
7
SE Va
Assuming it does not start right back up upon shutting down I'd make a quick check of two things. First, immediately check fuel pressure (key off is fine). It should be 28 psi or more as fuel pressure does not immediately drop to zero when shutting the engine off. If there is no pressure you've narrowed your search to a fueling issue. Second, immediately pull any accessible spark plug wire, install a spare spark plug, ground it and check for spark which will require 2 people to do. If there is no spark you've again narrowed your search to an ignition issue. The odds of it being both fuel and spark is pretty small in my experience.
 

p p p p

Active member
Oct 21, 2017
35
0
St. L
Thanks!

Non one has good consensus on fuel pressure at the rail. I've been told "It won't run well under 32" and "the pump is fine at 26."

I am swapping out the pump -- it was at about 28 and my problem was still happening.

I will test the plugs. New wires came yesterday, so that will all be part of my Monday Funday!!!!!!
 

ezzzzzzz

Well-known member
Apr 22, 2010
604
7
SE Va
Operating pressure is usually around 34-36 psi at idle but I've had 2 DI's that ran fine but showed lower psi (28) at idle.
 

p p p p

Active member
Oct 21, 2017
35
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St. L
Everything is pointing to the pump at this point, and I should be able to swap it out today or tomorrow, post office willing!
 

Tugela

Well-known member
May 21, 2007
4,763
564
Seattle
Don't discard the old pump even after installing the new one. In reviewing the thread I don't see that you have been able to confirm correct power to the pump. Without knowing how much juice it's getting there is still a chance that your problem is the fuel pump wiring harness and not the pump itself. See post #5.
 

p p p p

Active member
Oct 21, 2017
35
0
St. L
Right on.

I am not discarding any parts, save bad plugs and used wires. I think it's good to have backline for an emergency.
 

p p p p

Active member
Oct 21, 2017
35
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St. L
My current plan is to do all the fixes Weds., owing to a big fat cold front. I am fairly confident it will run fine (and perhaps even a little better than it has been!). Then I'd drive it till after the weekend, and then it needs to go to the shop for a CV joint I had booked for last week, then had to cancel. At that point, I am going to ask for a few specifics in this area, testing and checking my fuel wiring for sure. If it runs, I know I just don't have enough experience or ability in this area and it's going to need checking by someone else.

If it *Doesn't* work after Wednesday... I am going to bum OUT. But it will. All is straight now.
 

robertf

Well-known member
Jan 22, 2006
4,789
360
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The fact that it started and ran fine after removing the battery has me thinking it's something to do with the ECU, adapative parameters, something finishing its cycle with a bad reading that it, on restart, is furnishing the wrong mix formula.

Unhooking the battery doesnt clear anything. There isnt even a constant 12v feed to the ECU.
 

p p p p

Active member
Oct 21, 2017
35
0
St. L
Unhooking the battery doesnt clear anything. There isnt even a constant 12v feed to the ECU.

I am not clear why so many times, advice is to "unhook the battery to clear the parameters." I've been told that again and again and seen it so often. Wonder why.
 

Va_Disco

Well-known member
Dec 22, 2014
106
6
Hampton Roads, Va.
Some vehicles work that way. you un hook the battery and then you get to teach the vehicle how to run again. A Discovery ECU is not that way. It will store the information until it is manually cleared on purpose.

Any luck on getting the rover running?
 

p p p p

Active member
Oct 21, 2017
35
0
St. L
I've got the (new!) battery hooked up it a trickle charger. Maybe it's at full charge. I haven't checked. I've been inside.

I am not going to try it today.

Things got ugly earlier this week. I was happily cleaning things and tending to it and I noticed that one neighbor kept circling -- driving the wrong way -- my house. Like, nine times one day, eight times another day. That I SAW! Funny thing is, I was behind the hood, so I could see how he pulled up and just sat there, eyes searching every corner of my house, peeping. Just driving up, stopping the wrong way, looking at every inch of my yard and my house, eventually moving on. Again and again and again.

A few times it happened lately, he asked me if I needed help and I said, "no!" In fact, last week I was on the phone with someone at RoversNorth and he stopped when he saw me and got out of his car. I SCREAMED at him, "GO AWAY!" Has zero effect. Rotten little @$*@*@(#.

So that situation has kept me out of the driveway. He's a disgusting pig and says he's "just trying to get a look at me." Every time I'm out there, I feel -- ANGRY.

I've been dealing with that, less so my ride right now. I am in no mood to stand out there fixing.

I will get back out there in a weekend, when my other neighbors are doing outdoor chores and provide me some company. I suspect he will not do it when others are there. I do not believe he will stop. I confronted him, and he said he thought I needed "company" in my life, and that he was "helping" me.

Informal discussion with the cops has them recommending getting some of it on tape, which I just even don't want to do.

So no, the ride is no further along.
 

robertf

Well-known member
Jan 22, 2006
4,789
360
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I am not clear why so many times, advice is to "unhook the battery to clear the parameters." I've been told that again and again and seen it so often. Wonder why.

Eternal September. This board is pretty good about calling bs on bad technical advice or someone quoting marketing junk as technical fact. the other board not so much. Unhooking the battery does clear the values for 14cux and many other makes, but not GEMS since it basically unhooks the battery itself via the underhood relay a few seconds after turning the car off
 

BDM

Well-known member
May 23, 2005
333
30
OR
Sounds like you should exercise your 2A right to me. My sister carries a Glock 43 for the same reason. One to many sketchy encounters.
 

p p p p

Active member
Oct 21, 2017
35
0
St. L
He's kinda beat me to it. He's a something or other at a gun club. But yeah, def. After I get the Rover running, there's no reason why I shouldn't take some gun classes.

Pisses me off to no end that because I'm polite, some $*@(#@ takes it upon himself to be a **@#@(@.
 

p p p p

Active member
Oct 21, 2017
35
0
St. L
I've got zero fuel output at the pump, though I feel the pump hum. Replacement pump on the way.

Would CkPS kill fuel output at key turn to 2 position? I'm trying to understand at what point CkPS would kill fuel. If, hypothetically, CkPS had killed spark on four tries, would it then send "no more fuel until I am replaced"? Or does it allow fuel to get to engine, but then kill it?

What does a healthy CkPS do? What does a dying CkPS do? What does a dead CkPS do?

I realize I might have problems limited to pump/pump wiring but I'd love to rule in or our CkPS and FPS, plus get more of a sense of the flow of commands.