yella 90 Posted July 22, 2010 Share Posted July 22, 2010 hope someone can help me out. my td5 90 keeps kangaroo'ing a typical overboost symptom. however its running at a nice steady 1.02bar in 3rd or 4th gunning it up a hill. it pulls in every gear fine until it hits 3400rpm then it just kangaroo's on me it doesnt do it all the while just at random times. when its running fine ( the engine just feels different ) it'll happily rev past 3400 until i bottle it and change gear so far ive.. -checked/adjusted the boost -checked fuel pressure which gives a constant 4.0bar at all rpm ranges and when it playes up -changed fuel pump just in case as old un was noisey -new fuel filter -swapped air flow meter but both were showing around 60gph at idle -swapped map sensors -ran it with no airflow meter -cleaned crank sensor now i have swapped to a different ecu with a different state of tune map on it, then it runs and pulls fine with no issues, But the suspect ecu runs fine on my other td5 and a friends aswel i was thinking of putting my spare regulator on to give that a try ? does anyone else have any pointers or come accross this problem before as its bugging me now cheers Quote Link to comment Share on other sites More sharing options...
Garymv Posted July 23, 2010 Share Posted July 23, 2010 Id try the regulator personally..........the loom to the ECU is OK isnt it? Quote Link to comment Share on other sites More sharing options...
v8bertha Posted July 23, 2010 Share Posted July 23, 2010 Check the injector harness. I know TD5's have issues here and they need replacing periodically. However, I don't know if the symptoms you are experiencing are consistant with an injector harness fault. Injector harness linky thing Quote Link to comment Share on other sites More sharing options...
Garymv Posted July 23, 2010 Share Posted July 23, 2010 Check the injector harness. I know TD5's have issues here and they need replacing periodically. However, I don't know if the symptoms you are experiencing are consistant with an injector harness fault. Injector harness linky thing its an AMR6103 ...........Actually made in Stoke on Trent. Quote Link to comment Share on other sites More sharing options...
Gromit Posted July 23, 2010 Share Posted July 23, 2010 (edited) You say you have checked and adjusted the boost? How did you adjust it? Did you check the wastegate operation? Have you checked the pipework to the boost modulator and indeed the modulator itself? Edited to add: the defender TD5's don't have a modulator do they? Edited July 23, 2010 by Gromit Quote Link to comment Share on other sites More sharing options...
yella 90 Posted July 23, 2010 Author Share Posted July 23, 2010 theres no oil in the loom anywhere. ill try a spare injector harness to see if that cures it but i did check that a few weeks ago it it was dry as a nuns @ gromit... nanocom was showing 1.1bar exactly so i backed it off to 1.02 to see if that cured it. made no difference what so ever. ive swapped actuators to no avail all pipework is good i forgot to mention its a 10p engine and its just done 11k from new i tried it today with no ambient sensor connected and its made it batter with it only doing it occasionally now. but i dont think its related. its just having a good day ill try a regulator tomorrow and my spare engine loom dan Quote Link to comment Share on other sites More sharing options...
SteveG Posted July 26, 2010 Share Posted July 26, 2010 Have you run a trace on the throttle pedal voltages? Intermittent kangaroo effect has been known to be a faulty pedal before, especially earlier 2-track types. hope this helps Quote Link to comment Share on other sites More sharing options...
yella 90 Posted July 26, 2010 Author Share Posted July 26, 2010 Have you run a trace on the throttle pedal voltages? Intermittent kangaroo effect has been known to be a faulty pedal before, especially earlier 2-track types. hope this helps funny you should say that, i was going to ask that question mines a early 2 track ill pinch a pedal of my comp motor and see what happens cheers dan Quote Link to comment Share on other sites More sharing options...
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