Thread: Rough idle - TD5 please help

Hi Folks,

i have recently changed my TD5 15p engine over with a donnor TD5 15p.

I have a full history of the TD5 from the guy i brought it from. it had a suspected had crack. was taken off pressure tested and came back fine. engine was put back to together.

The discos auto died and the guy had enough of paying for the disco and decided to wreck the vechile.

I did all the usual stuff while the engine was out, injector harness, replaced water pump, , cleaned IAP, replaced oil cooler, o-rings for fuel cooler etc. replaced oil pickup pump. engine looked clean inside, no wear marks on the cam. oil good. etc... replaced the oil. new engine mounts, low stall converter
unfortunately it took over 12 months to get the swapped. I was very scared of this job.

anyways, swapped the engine over. took me about 3 weeks of lapsed time. (about 5 days)
before starting i re-coded the injectors to my ECU
had to prime the engine about 5 times and it fired up.
very shortly the engine started idling rough. shut it off and re-primed. fix the problem for about 15 seconds
thinking it may of been my nanocom not writing the injector codes correctly i used the donnor ECU. did the learn security and fired it up.
same problem, rough idle. thinking maybe its dirty fuel, i brought some injector cleaner and filled up the desiel. took the car for a drive.
I noticed when the car is in drive the rough idle is barely noticable, I thought maybe take the car for a drive to see if it clears up.
no differnce. Also tried disconnecting the MAF. no difference

The TD5 is only getting about 600Ks per tank, something is wrong just not sure what.

I have a dump from the nanocom of the injector balance. So if any one can make sense of this please let me know.

t	road_speed	rpm	rpm_error	battery voltage	pot 1	pot 2	pot 3	pot supply	ambient pressure	air flow	air inlet temp	mainfold pressure	coolant temp	fuel temp	EGR mod.ratio	EGR inlet	turbo ratio	PWR balance 1	PWR balance 1	PWR balance 2	PWR balance 4	PWR balance 5
0	0	0	-760	10.253	0.695	4.346	4.652	5.005	100.53	4.4	14.6	100.31	25.3	20.9	0	0	0	0	0	0	0	0
1	0	787	33	14.349	0.695	4.346	4.652	5.005	100.53	60.1	14.6	99.43	25.3	20.9	0	0	0	5	3	-3	4	31
2	0	804	40	14.349	0.695	4.346	4.652	5.005	100.53	64	14.6	99.73	25.3	21	0	0	0	5	-1	-3	-1	-2
3	0	798	41	14.349	0.695	4.346	4.652	5.005	100.53	63	14.6	99.73	25.3	21	0	0	0	2	2	-1	4	-6
4	0	792	12	14.349	0.695	4.346	4.652	5.005	100.66	56.6	14.5	99.73	25.3	20.8	0	0	0	-10	11	-18	19	-3
5	0	793	44	14.349	0.695	4.346	4.652	5.005	100.66	60.4	14.4	99.72	25.4	20.6	0	0	0	-6	3	9	13	1
6	0	804	47	14.349	0.695	4.346	4.652	5.005	100.39	60	14.4	99.72	25.8	20.5	0	0	0	5	-5	30	8	25
7	0	826	67	14.349	0.695	4.346	4.652	5.005	100.53	52.8	14.3	99.73	25.8	20.3	0	0	0	28	41	7	13	22
8	0	702	-95	14.093	0.695	4.346	4.652	5.005	100.53	64.8	14.3	100	25.6	20.2	0	0	0	-11	1	-21	10	0
9	0	747	30	13.837	0.695	4.346	4.648	5.005	100.53	65.4	14.2	99.73	25.6	19.8	0	0	0	20	-9	-24	-33	-42
10	0	781	53	14.349	0.695	4.346	4.652	5.005	100.66	57.1	14.1	100	25.6	19.7	0	0	0	-25	-9	-26	14	46
11	0	741	-95	14.349	0.695	4.346	4.652	5.005	100.53	55.8	14.1	100	25.6	19.6	0	0	0	-25	2	-33	23	35
12	0	759	-12	14.093	0.695	4.346	4.652	5.005	100.53	59	14	100	25.7	19.5	0	0	0	-18	-5	-29	11	-31
13	0	632	-27	14.349	0.695	4.346	4.652	5.005	100.66	63.7	14	100	25.8	19.2	0	0	0	-18	-10	1	7	20
14	0	733	-42	14.349	0.695	4.346	4.652	5.005	100.53	66.7	13.9	99.73	26.1	19.1	0	0	0	-15	2	-20	-27	0
15	0	674	-83	14.605	0.695	4.346	4.652	5.005	100.53	67	13.9	99.73	25.9	18.9	0	0	0	-7	-8	7	3	5
16	0	811	10	14.349	0.705	4.329	4.652	5.005	100.66	67	13.8	99.73	25.9	18.4	0	0	0	-14	37	-15	-5	0
17	0	820	34	14.605	0.716	4.323	4.652	5.005	100.66	65.7	13.8	99.73	25.9	18.4	0	0	0	29	-18	0	-32	-41
18	0	791	64	14.605	0.808	4.232	4.652	5.005	100.66	65.3	13.8	99.15	25.9	19	0	0	0	-8	33	-11	-12	0
19	0	840	82	14.349	0.851	4.193	4.652	5.005	100.66	63	13.7	99.73	25.9	18.9	0	0	0	28	-15	0	-29	37
20	0	854	254	14.349	0.953	4.09	4.652	5.005	100.53	76.8	13.7	99.44	25.8	18.9	0	0	0	-1	2	-5	4	0
21	0	711	-63	14.349	0.899	4.147	4.652	5.005	100.53	68.4	13.7	100	25.8	18.7	0	0	0	5	-14	-33	-13	-16
22	0	938	147	14.349	0.915	4.136	4.652	5.005	100.66	71.8	13.6	99.73	25.8	18.7	0	0	0	0	3	2	1	-3
23	0	907	151	14.349	0.915	4.136	4.652	5.005	100.53	70.4	13.6	99.73	25.8	18.6	0	0	0	1	4	0	-1	-4
24	0	909	147	14.349	0.915	4.136	4.652	5.005	100.53	71.2	13.6	99.72	25.8	18.5	0	0	0	-3	6	-1	0	-3
25	0	911	143	14.349	0.915	4.136	4.652	5.005	100.53	70.5	13.5	99.72	25.8	18.5	0	0	0	0	4	0	1	-6
26	0	899	140	14.349	0.915	4.136	4.652	5.005	100.53	69.5	13.4	99.72	25.8	18.5	0	0	0	-1	6	-1	-1	-5
27	0	895	127	14.349	0.915	4.136	4.652	5.005	100.53	68.7	13.4	99.72	25.8	18.4	0	0	0	0	5	-1	0	-5
28	0	887	140	14.806	0.915	4.136	4.652	5.005	100.66	69.4	13.4	99.73	25.8	18.4	0	0	0	0	3	0	3	-6

When the aircon is on it pushing the revs up and seems to be less rough

this is with the aircon on.

t	road_speed	rpm	rpm_error	battery voltage	pot 1	pot 2	pot 3	pot supply	ambient pressure	air flow	air inlet temp	mainfold pressure	coolant temp	fuel temp	EGR mod.ratio	EGR inlet	turbo ratio	PWR balance 1	PWR balance 1	PWR balance 2	PWR balance 4	PWR balance 5
0	0	758	-43	14.605	0.695	4.346	4.652	5.005	100.53	64.8	13.5	100.01	33.7	20.9	0	0	0	8	-16	33	-11	-14
1	0	774	68	14.349	0.695	4.346	4.628	5.005	100.53	64.4	13.5	100.01	33.8	20.6	0	0	0	-8	18	0	10	-30
2	0	864	110	14.349	0.695	4.346	4.652	5.005	100.53	57.6	13.5	100.01	33.9	20.9	0	0	0	4	21	7	21	-25
3	0	865	75	14.349	0.7	4.346	4.652	5.005	100.66	63.4	13.6	100.01	33.9	20.9	0	0	0	6	-16	33	29	39
4	0	869	109	14.605	0.695	4.346	4.652	5.005	100.66	58.6	13.7	100.01	34	20.9	0	0	0	11	14	5	13	-30
5	0	852	107	14.605	0.695	4.346	4.648	5.005	100.79	57.4	13.7	100.01	34	21	0	0	0	34	22	27	-20	38
6	0	829	53	14.605	0.7	4.346	4.652	5.005	100.66	54	13.7	100.01	34.1	21	0	0	0	-19	2	38	11	36
7	0	701	-42	14.349	0.695	4.346	4.652	5.005	100.53	64.5	13.7	100.3	34.1	21	0	0	0	-20	-12	-36	-27	-29
8	0	738	-57	14.349	0.695	4.346	4.652	5.005	100.53	60.8	13.7	100.31	34.1	21	0	0	0	-5	-5	-16	14	12
9	0	728	17	14.349	0.695	4.346	4.648	5.005	100.66	65.7	13.7	100.01	34.2	21	0	0	0	40	7	-24	-36	0
10	0	801	50	14.349	0.695	4.346	4.648	5.005	100.53	64	13.8	100.01	34.2	21	0	0	0	24	-16	0	-28	36
11	0	792	43	14.605	0.695	4.346	4.652	5.005	100.53	65	13.8	100.01	34.3	21	0	0	0	32	18	-19	-23	-50
12	0	788	37	14.605	0.695	4.346	4.648	5.005	100.66	64	13.9	100.11	34.3	21.1	0	0	0	-2	-16	36	17	19
13	0	845	122	14.605	0.695	4.346	4.652	5.005	100.66	56	13.9	100.01	34.4	21.1	0	0	0	16	15	3	7	-48
14	0	852	67	14.554	0.695	4.346	4.652	5.005	100.53	52.9	13.9	100.01	34.4	21.1	0	0	0	7	19	-7	15	14

Could it be the fuel pump, or fuel pressure valve, or is it more likely to be the injector seals?

Any suggestions please let me know

Troy

I forgot to mention when I changed my rear main seal, I did not reference where the starter/timing wheel was located. When I place it back on it did not align allowing me to bolt the flex plate up to the torque converter. I unbolted and realign for the flex plate and did not think anything of it. I just checked on my old engine. I don’t think I could of stuffed up the wheel as it has a align pin on the wheel to the crank