95 D1 intermittently not starting.

p m

Administrator
Staff member
Apr 19, 2004
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La Jolla, CA
www.3rj.org
It kind of is to me. People come here for advice. If they get bad advice why come back. I was bored and drinking and didn't do my due diligence. That won't happen again...... unless I get really bored and drunk.
Been there, done that.
Stewart's better equipped to count the times I've given bad advice, but I did.
And I've been called out on it... First time more than 20 years ago, on that very website. It has something good going to it - it corrects itself. Unlike Facebook.
 

discostew

Well-known member
Sep 14, 2010
6,772
649
Northern Illinois
Literally the exact issue happened on my D1. I’m just saying it’s worth a look if nothing else solved it. Could just be moisture underneath the dizzy cap or dirty plugs. Are all 8 getting spark at the plug?

Just easy stuff to check.
But he said he had fuel pressure when it stalls. So shouldn’t he just try to diagnose it? Checking fuel pressure has already made it to the list of stuff that’s not causing this. I agree 100% that that harness is problematic, but as long as he’s correct about it having fuel pressure when it stalls, that ain’t it.
 
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discostew

Well-known member
Sep 14, 2010
6,772
649
Northern Illinois
Been there, done that.
Stewart's better equipped to count the times I've given bad advice, but I did.
And I've been called out on it... First time more than 20 years ago, on that very website. It has something good going to it - it corrects itself. Unlike Facebook.
There’s people on this board who are wicked smart. Your one of them p m. I think you guys are way more current on these old trucks. When I started coming here it helped me remember the old stuff and I actually saw some of them. But not anymore. Now every time some new info comes in, it feels like some old Disco or Classic piece of knowledge has to fall out.
I’ve been called out for saying stupid shit about stuff I have no clue about. Like most recently I was wrong about retaining the top or the bottom of the spring when using dislocation cones. I’ve never done that, I should have shut up.
 

Flyfish

Well-known member
Oct 29, 2004
1,275
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St. Louis
So shouldn’t he just try to diagnose it?
Agree, that’s why I said if nothing else works. But he hasn’t diagnosed much besides , probably needs new plugs, wires, cap and rotor.

He should see what the plugss look like. If they look normal, then verify spark at each plug,….while running and no start cranking. That will tell us what to do.
 

discostew

Well-known member
Sep 14, 2010
6,772
649
Northern Illinois
Agree, that’s why I said if nothing else works. But he hasn’t diagnosed much besides , probably needs new plugs, wires, cap and rotor.

He should see what the plugss look like. If they look normal, then verify spark at each plug,….while running and no start cranking. That will tell us what to do.
I understand what your saying. I look at those kinds of things after I've found the problem. Kind of like making sure I'm not leaving a known problem in a vehicle thats going to make me look bad in a month. Once I see that the vehicle has fuel pressure while it stalled your not going to find me digging in that fuel pump circuit. The problem with fixing cars the right way is it takes a lot of time. You have to be standing there checking stuff WHILE it's acting up. So you figure this car stalls when it's been driven about 10 min and going up a grade. Thats where you gotta be to fix this car. But the other side of dealing with all that is the fact that a large part of the public believes there is some computer that we plug into the vehicle and it just tells you whats wrong, those people don't want to hear about diagnostic charges.
 
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discostew

Well-known member
Sep 14, 2010
6,772
649
Northern Illinois
Here's what I think is wrong with this car. I say this because I trust that the vehicle has fuel pressure while it stalls. I would have varified that with my fuel pressure guage taped to my windshield while it stalled. Now that we know that it comes down to 2 things. a major loss of battery voltage or ground to a component or the whole vehicle. Or a regular old Lucus CUX ignition problem. One thing that gets passed a lot of techs is the fact that the ECM pulses the ground for your ignition system.. Not a common failure but I've seen it.
 

Flyfish

Well-known member
Oct 29, 2004
1,275
144
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St. Louis
So you figure this car stalls when it's been driven about 10 min and going up a grade. Thats where you gotta be to fix this car.
I don’t think it’s a stalling on a grade issue, that was Matt’s thread. This is a hot start issue. If he’s not losing fuel when it occurs, then spark is probably the first thing to look at.

PM’s suggestion of cooling the amp is good. Looking at the plugs may show they are wet/fouled and not getting a complete burn from weak or no spark. Maybe a bad coolant temp sensor is causing an over fueling condition.

He should also lo at the signal wire on the alternator in case it’s being affected by something hot.

But to your point, most of us don’t have autologic that we can plug in. So testing components will find the problem.
 
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discostew

Well-known member
Sep 14, 2010
6,772
649
Northern Illinois
I would need to be standing next to it when it happened. Still the same. Fuel pressure gauge would be on it. I have no way to interface with a CUX vehicle. Meter would be out. You just can’t diagnose a car long distance. It won’t work
I’ve seen these no start hot vehicles be as simple as the fuel temp and the coolant temp sensors being switched.
 
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Greg_M

Well-known member
Dec 27, 2021
52
12
Vancouver Island
I see a lot of thought and good intention going into providing help and advice. The OP last commented 2 weeks ago. Perhaps some of the checks have been done by now ruling out some of the possibilities (even the spark/fuel debate). Mastercamper? I feel there's a better chance of getting this sorted if the results of troubleshooting to date were known to all. Thanks Mastercamper. It's an interesting thread.
 

discostew

Well-known member
Sep 14, 2010
6,772
649
Northern Illinois
I see a lot of thought and good intention going into providing help and advice. The OP last commented 2 weeks ago. Perhaps some of the checks have been done by now ruling out some of the possibilities (even the spark/fuel debate). Mastercamper? I feel there's a better chance of getting this sorted if the results of troubleshooting to date were known to all. Thanks Mastercamper. It's an interesting thread.
There’s not much thought that goes into any of this. Also people don’t usually post up when they find the problem. I think it a healthy response to the fact the not many people really care. But Kenneth, he cared.
 

DiscoHasBeen

Well-known member
Aug 7, 2016
885
190
Indy
I see a lot of thought and good intention going into providing help and advice. The OP last commented 2 weeks ago. Perhaps some of the checks have been done by now ruling out some of the possibilities (even the spark/fuel debate). Mastercamper? I feel there's a better chance of getting this sorted if the results of troubleshooting to date were known to all. Thanks Mastercamper. It's an interesting thread.
This can be one of the more frustrating things about the 'net. Can't even begin to put a dollar amount sites like this have saved me. I've repaired phones, built computers, repaired washers/dryers/dishwashers/ central air units. Repairs to numerous to count to our vehicles over the years. Siding two of my building as I write this... Most of it came from threads like this where someone asks a question and I get my knowledge from the answers, but all too often a reply from the OP as to if, and how, they fixed the problem would be really helpful.
 

kcreech

Member
Mar 17, 2022
5
0
Oregon
My son and I have had similar issues but it was with his 88 range rover classic. Our issue was a consistent hot start issue. Your concern doesn't seem to be as prevalent as ours but what we found is if we disconnect the coolant temp sensor, the engine will start immediately and once the sensor is reconnected, we are good to go until we shut the engine off again. Something you could try. Note: injectors seemed to be the fix for the hot start issue. we replaced them with some reman injector and we got rid of the hot start issue but we had low power. We may have to get new injectors to resolve our issue.