GEARBOX woes

Nodge68 · Apr 22, 2015

griff2 said:
will go have a look at the wiring now, if i remember the mot guy did say the wire for that lama was rubbing on the steering rack ,may be thats the prob ,as for the odb2 reader do you mean the connectors on that or the car

From memory, O2 sensor No: 2 is on the left manifold, this would be the rear manifold on the Freelander.
The OBD2 socket on the car has been known to be suffer contact spread. This might account for the reader not working. I've used the same ELM on my V6 Freelander without an issue.

griff2 · Apr 22, 2015

went out for a hr to check the wiring on the 02 sensor ,found nothing with that one ,BUT the front one thats a dif matter

my son helped me yesterday ,he plugged the sensor in,but when i touched the wire the plug just felt part !!!!

looks like he never pushed it together correctly till it clicked

it is now ,could that of been the problem do you think ?

as for the code reader ive not tried that yet ,would i take the pins out 1 by 1 and push them closer together?

Nodge68 · Apr 22, 2015

griff2 said:
went out for a hr to check the wiring on the 02 sensor ,found nothing with that one ,BUT the front one thats a dif matter

my son helped me yesterday ,he plugged the sensor in,but when i touched the wire the plug just felt part !!!!

looks like he never pushed it together correctly till it clicked

it is now ,could that of been the problem do you think ?

as for the code reader ive not tried that yet ,would i take the pins out 1 by 1 and push them closer together?

If the O2 sensor plug wasn't correctly plugged in, that would cause your problem. The engine needs to get an O2 reading. If it can't get mixture information, the ECU runs the engine in an open loop with a rich mixture. This is to avoid engine damage through a lean mixture. My memory is off. No: 1is the front obviously.
I don't know what muppet has been working on this Freelander?

griff2 · Apr 22, 2015

nore me i must say
im no mechanic by a long shot im a car fiddler but i like to make sure i do things correctly !!!! I have only used a garage once in last 25 yrs as i think they rip you off ,but if your going to do something yourself try and do it right ,ie i needed to weld my classic mini so i taught myself how to mig weld ,by using scrap metal first

griff2 · Apr 23, 2015

well think i must of ####ed up again some how

just took it back again for emissions

yesterday it was total fail ,but found 02 sensor was not connected ,replugged it in and the car past the rev side easly

but again failed the idle part :censored::censored::censored:

he put it on the machine again and came up with these codes!!!!

p0300 misfire of multi cyclinders
p1319
p0135 lambda heater bank 1

also noticed on way to mot the gear box was still very jolty but on way back when everything was warm/hot it was much less noticable!!!! but im sure even better once ird plate sorted

Nodge68 · Apr 23, 2015

Ok so the O2 sensor has a faulty heater or there is a bad connection to the heater. The O2 sensor will only provide mixture information to the ECU when they are up to temperature. The heater makes sure the O2 stays hot enough to function.
The multiple misfiring is an odd one. This is normally fuel pressure related on the Freelander due to its multiple coil setup. Fuel pressure is worth a check, it should be around 60 psi with the engine running. The fuel filter is known to clog, restricting fuel supply.

griff2 · Apr 23, 2015

if it was the fuel filter would it only do this on idle?also how do i check the psi on the fuel? as for o2 heater does that mean a new 02 sensor?

cheers griff

Hippo · Apr 23, 2015

Could it be the electrical wires to the cylinders mixed up if there's a firing problem? Just wondering.

griff2 · Apr 23, 2015

funny you should say that do you mean the clip on ones that clip on the injector? if so the ones 4/5 i was not to sure if i got them in correct order as on loom either would fit easly could that course it? or is the firing order controled by the coil wires?

Nodge68 · Apr 23, 2015

griff2 said:
if it was the fuel filter would it only do this on idle?also how do i check the psi on the fuel? as for o2 heater does that mean a new 02 sensor?

cheers griff

My first check would be the connection at the O2 sensor plug. The connections could be corroded, especially if they were disconnected for any length of time.
Low fuel pressure can effect general running quality through the whole rev range, not just idle. The ECU will simply log a P0300 code for multiple cylinder misfiring.
Testing the fuel pressure is done at the tyre type valve at the end of the fuel rail. There are special gauges for testing fuel pressure, however, it is possible to use a dial type tyre pressure gauge, held firmly on the test point. The test point should be visible with the air filter housing off. How is the air filter anyway. It should be changed yearly or it begins to clog.

Nodge68 · Apr 23, 2015

griff2 said:
funny you should say that do you mean the clip on ones that clip on the injector? if so the ones 4/5 i was not to sure if i got them in correct order as on loom either would fit easly could that course it? or is the firing order controled by the coil wires?

The injectors fire sequentially just like the coils. Getting 2 injectors firing in the wrong sequence would affect emissions. I'll look out the colour codes for the wiring

griff2 · Apr 23, 2015

well thanks NODGE68 i played with the wires on the data connection on my car and got torque working

which makes life easier!!!

i cleared the fault codes and ran the test time and time again ,now all it comes up with is multi misfires no more 02 sensor faults

if it is that ive put two plugs wrong way round its sods ####ing law there on bank 2 so means manifold back off :-(

griff2 · Apr 23, 2015

right got the rave wiring diagram all connectors where correct

after i had taken pullem off AGAIN LOL

but how do the ht leads sit on the front bank near radiator? (im assuming there 1,3,5) do they go like this

top numbers in pic ref coil,lower ref spark plugs

as mine are not like like,but are as they where when i first got car but thinking about it someone (think it was nodge68 said did not sound like firing correctly)

cheers
griff

edit may be 2,4,6 lol but bank nearest the rad

Nodge68 · Apr 24, 2015

griff2 said:
right got the rave wiring diagram all connectors where correct after i had taken pullem off AGAIN LOL

but how do the ht leads sit on the front bank near radiator? (im assuming there 1,3,5) do they go like this

top numbers in pic ref coil,lower ref spark plugs

as mine are not like like,but are as they where when i first got car but thinking about it someone (think it was nodge68 said did not sound like firing correctly)

cheers
griff

edit may be 2,4,6 lol but bank nearest the rad

I'll look out some wiring routes for the front coils. From memory there is some odd with the HT route but need to refer to a correct picture first. Sorry for any delay but I've not played with an older KV6 for around 18 months now.
I'll post a correct picture later

Edit. You plug routing picture isn't correct. The coil closest the timing belt should feed plug 3 and middle coil should feed plug 1. The coil closest to the gearbox should feed plug 5. Here's a picture, note number on plug leads.

griff2 · Apr 24, 2015

cool thank you

i know mine right now goes number 3 coil goes to number 1 plug and number 1 coil goes to number 3 plug

griff2 · Apr 24, 2015

so mine is right then ,but why then am i getting a miss fire :0(

any ideas?

griff2 · Apr 24, 2015

right this car is ****ing me off with the emissions lol

i will check fuel preasure once i get a gauge

Im thinking of checking plugs next make sure there all ok ,what size are they so i can get right socket down there as it looks like its tight on front bank but christ knows how you get the to the rear bank of plugs ????

then if all else fails would a universal 02 sensor work? or does it need to be a gen one

Nodge68 · Apr 24, 2015

griff2 said:
so mine is right then ,but why then am i getting a miss fire :0(

any ideas?

Plugs would be my next guess. They should be gapped at 1 mm and be of the platinum type. Denso was the factory fitted make and they should be good for 40K miles plus. If the engine hasn't been running correctly on the front bank, maybe the plugs are fouled? They are standard 10 mm size but you need a 200 mm extension on a ratchet to reach them. The rear plugs can be a challenge but not impossible with patients

I'd use an OE O2 sensor but I'd not change that until I'd exhausted all other possibilities first.

griff2 · Apr 24, 2015

ok well im off work sunday so will have a look at the plugs,the cars done 84000 miles and after seeing everything else on the car they will prob be the orginal plugs,well at least the rear bank !!!!

but i have the pullem still off so getting to the rear should be easy ,i assume the rear plugs are under the coils? not like the front with leads to them?

could a plug course my problem?

Nodge68 · Apr 24, 2015

griff2 said:
ok well im off work sunday so will have a look at the plugs,the cars done 84000 miles and after seeing everything else on the car they will prob be the orginal plugs,well at least the rear bank !!!!

but i have the pullem still off so getting to the rear should be easy ,i assume the rear plugs are under the coils? not like the front with leads to them?

could a plug course my problem?

Often the rears are not changed as they are harder to get at. Yes the coils are directly over the plugs so you have to remove the coils before gaining access to the plugs. I find removing the plastic plenum helps with access too.
The V6 is a lovely engine but it's harder to get at 1/2 of it! Plugs would be a good place to start with running faults.

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