The dreaded high idle issue - D1

[Knightspirit]

So I did some testing with the TPS - and when I removed it - the idle immediately settled down to normal (just pulled it off - did not unplug). I could turn the little sprung wheel with the blade of a screwdriver and change the idle. Then I noticed that it seemed to be sticking and not returning to center - and sometimes it didn't respond when turned. So I am replacing it and we'll see what happens - I think it was the sensor.

 

[ptschram]

@Knightspirit- is the case of your ECU corroded? Moisture ingress is a major cause of what you have experienced.

I am backed up with GEMS ECUs at the moment-and in the midst of finishing design, and beginning the build of an ECU test bench, but if you can’t resolve the issue, contact me and we can make arrangements for your ECU to come to me for some pokin’, proddin’, and fixing’.

@terryjm1-when you replaced your injectors, what was the provenance of the replacements?

 

[terryjm1]

@terryjm1-when you replaced your injectors, what was the provenance of the replacements?

Regretfully, I cannot recall. They were recommend by someone either on this forum or a defender forum. I had them for a good while before I installed them. They are the “improved” ones with the finer spray pattern.

 

[best4x4]

Volvo 4 Injectors & BMW Fuel Pressure Regulator on both my 95 D1 & 97 D1. Smoother idle, and a little more fuel flow with the BMW FPR.

 

[Knightspirit]

@Knightspirit- is the case of your ECU corroded? Moisture ingress is a major cause of what you have experienced.

I am backed up with GEMS ECUs at the moment-and in the midst of finishing design, and beginning the build of an ECU test bench, but if you can’t resolve the issue, contact me and we can make arrangements for your ECU to come to me for some pokin’, proddin’, and fixing’.

@terryjm1-when you replaced your injectors, what was the provenance of the replacements?

Haven't checked the ECU yet - but it is on my list - I have heard that. Will definitely send it to you if I think it needs to go! Thanks!

 

[ptschram]

@Knightspirit
Before you do that, contact me! I am swamped with ECUs right now, three to fix and one to try to reconfigure as a 4.6 with a manual transmission.

It will be a week or so at the least before I am ready for another.

 

[Knightspirit]

@Knightspirit
Before you do that, contact me! I am swamped with ECUs right now, three to fix and one to try to reconfigure as a 4.6 with a manual transmission.

It will be a week or so at the least before I am ready for another.

DM'd with pics - looks ok to me...

 

[Knightspirit]

OK - I have fixed my idle issue! It was a bad Throttle Position Sensor. Replaced that and now it runs great - especially after having reset the adaptive values.

Whew!

 

[salvvia]

@Knightspirit- is the case of your ECU corroded? Moisture ingress is a major cause of what you have experienced.

I am backed up with GEMS ECUs at the moment-and in the midst of finishing design, and beginning the build of an ECU test bench, but if you can’t resolve the issue, contact me and we can make arrangements for your ECU to come to me for some pokin’, proddin’, and fixing’.

@terryjm1-when you replaced your injectors, what was the provenance of the replacements?

Hate to hijack but glad to see you see you

 

[ptschram]

Hate to hijack but glad to see you see you

Thank you!

the past four years have been Hellish

poor health and advancing age have forced me to make some painful choices

 

[MotoBando]

@Knightspirit
Before you do that, contact me! I am swamped with ECUs right now, three to fix and one to try to reconfigure as a 4.6 with a manual transmission.

It will be a week or so at the least before I am ready for another.

I performed a 4.0 to 4.6 swap (gems) in my ‘97 D1 a few years back. It seems to run ok with a few gremlins popping up here and there. Is it better to reconfigure the ECU, or do they eventually adapt and optimize performance?