My wife drives a 2003 Disco with 80K miles. Its the base model and in very good shape.
Every so often we get the 3 amigos, a restart usually clears them.
Occasionally we get a CEL. I have a wifi ELM and read them with my I phone. I believe they were misfire related, but I cant recall the exact codes.

A week or so ago she was going shopping and pulled in to get gas. When she went to restart the car which would barley run, had no power and would not rev up at all.
She nursed it to a Garage 1 block away and got a ride home, I was out of town.

The mechanic at the garage initially thought it was a bad fuel pump and swapped it out. No joy
He said he could keep it running but the cat's heated way up.

He pulled some codes and said he got several misfire codes and an MAF code,

He tried a MAF next again, Nothing.

I stopped by today and we tried to start it, the truck would barely run

Thought I would start a thread here for some assistance.

Jeff

 

Buhler....

 

Welcome to the forum. If you could post exactly what codes you are throwing we can start there. We will get you up and running. Don't let your mechanic throw anymore parts at it.

 

Thanks Frank4,

May not get them till Monday.

I have been on the forum for a while. had a 99 D2, Now the 03, and this is the first issue that stumped us.


Jeff

 

I'm curious, how does your mechanic justify the parts he has installed which did not fix your problem?

It seems weird to me that you take your vehicle to a mechanic because they are professionals, yet they can't diagnose your vehicle without wasting your money.

There should be some recourse.

 

I think he returned the fuel pump and MAF sensor.....
The truck stopped working at the gas station where the mechanic is.
If it was home, a different story.
I was 200 Miles out so my wife made the decision to leave it there.

 

There is a fuel filter under the right part of the frame on a D1. D2 ? but change the fuel filter.

Might be the Crank position sensor acting up. But that only acts up usually when the engine is hot.

If the cats are heating up yes then excess fuel. Maybe one of the coil packs is going out.

You may want to put on an OBDII with live readout and see what is going on.
Also make sure the TEMP sender is sending the correct temperature to the engine computer. This is a separate sensor than the temp gauge.

Pretty much the inputs to the ECU computer are

Throttle Position
O2 sensors
MAF readings
Crank position
Temperature from Engine coolant
Temp from ambient air

All this has to line up.

Might be the throttle position sensor too.
But you should get codes for these.

Actually, this may sound stupid - but you may have a low voltage problem.

Replace the battery.

 

cool, I thought you were on the hook for that.

 

Stopped by to visit the beached D2
Here are the ECU codes

P0102 Mass Air
P1300 Misfire detected
P304 Cylinder 4 misfire
P0302 Cylinder 2 misfire
P1668 no info
P1884 no info

The mechanic is waiting on me for a next step...

 

P1668 is an immobilisation code. That could well be the source of one of your problems.

Read post #11 on this thread: Fault Code P1668 - Land Rover Forums : Land Rover and Range Rover Forum

The misfires are tricky. Lots of possible reasons for them.