99 Discovery 1 SD Questions

danibarra

Member
Oct 19, 2024
6
0
United States of America
Hi, some questions and looking for advice. I purchased a 99 Disco 1 SD and it has its issues which I knew and will be addressing. When purchased it turned on, and "drove" but would not idle correctly. Brakes would need to be slammed to the floor for the car to stop. Towed the car back to my place, but was forced to park it on the sloped driveway at that time.

Goal is to move it to a flat level to begin fixing the main issues. So, my dashboard is like a Christmas tree and will address each issue. I got a new battery (which is not connected at the moment), and when I start the car it begins with a high idle at 3k, and then dies within 4 seconds. Before, the car would just high idle at 3krpm and would adjust when in drive. I will do adaptive value resets to and etc to fix this. Also, I do have a light ticking coming from the engine which I will tackle when the time comes.
Other lights on are srs, oil light, anti lock, and battery light.

That being said, will be taking alternator out and testing at Autozone to make sure its not faulty. If so, I am undecided if I should move the car to the backyard where it is flat but requires a little bit of driving or attempt to do it on the sloped driveway. Maybe add some Marvel Mystery Oil before moving car to the backyard.

Any advice would be appreciated.
 

Tugela

Well-known member
May 21, 2007
4,823
616
Seattle
If you don't already have one, buy an OBD-2 Bluetooth dongle (like the OBDLink LX), pair it to the Torque app on your phone, and that will open a window into understanding what's going on with the vehicle. You can read codes, see live sensor data, etc.

Most likely culprit for the antilock light is a sensor. Those are inexpensive to buy and easy to replace.
 
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danibarra

Member
Oct 19, 2024
6
0
United States of America
If you don't already have one, buy an OBD-2 Bluetooth dongle (like the OBDLink LX), pair it to the Torque app on your phone, and that will open a window into understanding what's going on with the vehicle. You can read codes, see live sensor data, etc.

Most likely culprit for the antilock light is a sensor. Those are inexpensive to buy and easy to replace.
Yeah, I have the OBD Link LX with codes that I got from the Torque app being P1314, P1190, P1316. I already got new spark plugs and wires ready to be installed.

For anti lock light, I most likely will disable ABS with the issues I have been reading up on the Discovery 1. Hopefully a brake bleed is all that is needed since car sat for almost 2 years to fix brake issues.
 

Tugela

Well-known member
May 21, 2007
4,823
616
Seattle
Yeah, I have the OBD Link LX with codes that I got from the Torque app being P1314, P1190, P1316. I already got new spark plugs and wires ready to be installed.

For anti lock light, I most likely will disable ABS with the issues I have been reading up on the Discovery 1. Hopefully a brake bleed is all that is needed since car sat for almost 2 years to fix brake issues.
Good stuff. Consider replacing the flexible brake lines while you're at it. If they're the originals, it's long past time. Braided stainless are supposed to reduce line flex but I can't tell the difference. The fluid flush and bleed will help.
 
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danibarra

Member
Oct 19, 2024
6
0
United States of America
Good stuff. Consider replacing the flexible brake lines while you're at it. If they're the originals, it's long past time. Braided stainless are supposed to reduce line flex but I can't tell the difference. The fluid flush and bleed will help.
Thanks for the advice. I will be getting 2 plus inch braided once I move truck to backyard. I will also be lifting truck later down the year. Brake lines hopefully should be good enough for this small travel.

Going to order the sandwich adapter right now and an oil pressure gauge.
 

kris812

Well-known member
Jun 11, 2014
420
156
Tucson AZ
Focus on oil pressure first!

If you can't get pressure, might need rebuild or more work; so best to start here!

As for the braided brake lines I 100% agree. I noticed a difference, however one of my old lines was expanding...

High idle, vacuum leaks!

Dieing after 4 seconds... Fuel pump.. most likely the tube inside is cracked that feeds up from the pump.. You'll start and immediately run out of fuel pressure.. Ask me HOW many times I've had this tube brake!
 

danibarra

Member
Oct 19, 2024
6
0
United States of America
Focus on oil pressure first!

If you can't get pressure, might need rebuild or more work; so best to start here!

As for the braided brake lines I 100% agree. I noticed a difference, however one of my old lines was expanding...

High idle, vacuum leaks!

Dieing after 4 seconds... Fuel pump.. most likely the tube inside is cracked that feeds up from the pump.. You'll start and immediately run out of fuel pressure.. Ask me HOW many times I've had this tube brake!
Yeah, already ordered my engine re build parts.

Doing everything as precaution as previous owner didn't specify any engine rework. Just want to get fresh oil in so I can move car to backyard to actually be able to work on it on a level surface.

I don't think it is fuel pump as previous owner told me its new, but will check all that area as pre caution, car was not dying before new battery and adaptive reset. Going to be a fun project though!
 

danibarra

Member
Oct 19, 2024
6
0
United States of America
UPDATE

I just did an oil change with Rotella t4 15W-40 and oil light went out.
Did this to be able to move car to backyard and noticed battery light went out. Other than that, I did a quick brake bleed as well.

Things I noticed when I drove the car to the back. I switched MAF sensor to OEM and cleaned the IACV and reset adaptive values. Still high idle, but will blame vacuum leak until I dive into the engine.

My car shoots to 3k rpm and stay around 2-3k rpm when on drive and 1.2k on reverse with hardly any brakes. I still have to slam brakes to floor to get some light stoppage. Luckily no cars around when I had to drive on the street to my side entrance.

Now I got my car on a level surface and will begin engine overhaul and look over everything.

Main goal for the upcoming months will be to get engine overhaul complete, correct idle and working brakes.