Rover 75 rough idle and juddring when driving

iggle · 16th August 2018, 07:48

HELP I am out of ideas!!!!!

I have a Rover 75 2.0cdti its a 2003 auto model. The tick over is erratic, and when I am driving along its like got a judder, like a slight misfire?? I have changed the MAF, the fuel rail sensor, the fuel filter, the under bonnet fuel pump Checked the fuel pressure out of the under bonnet pump thats fine, there is no air from the tank to the pump. I replaced the injectors, the injector wiring harness all to no avail. On the snap on diagnostic there is no faults stored except a heater plug code which wont cause the isssue thats driving me NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- insane.. I live in Rossendale Lancashire would really love some help.

Cheers

Dave

Sheraton · 16th August 2018, 10:19

I'm no Diesel expert

Is there a reason why you would discount a Glowplug fault

surely this would cause the symptoms you describe ?

Paul.

iggle · 16th August 2018, 11:01

I have always had a glow plug fault code for the six years I have owned the car and its been fine, most of the time the ECG valve has been disconnected etc so thats why I discount the glow plug as a cause, so many sensors doing so many things lol.

stevestrat · 16th August 2018, 11:08

BigRuss, one of the knowledgeable experts here is less than 30 miles away from you in Liversedge. Have a word with him.

iggle · 16th August 2018, 11:26

cheers will do

BigRuss · 16th August 2018, 19:54

Quote:

Originally Posted by Sheraton

I'm no Diesel expert

Is there a reason why you would discount a Glowplug fault

surely this would cause the symptoms you describe ?

Paul.

Not on a diesel it won't, 99% of the cars I see have the self same fault and are all running perfectly.

I'm more surprised if I don't see it

Russ

Sheraton · 17th August 2018, 00:53

Quote:

Originally Posted by BigRuss

Not on a diesel it won't, 99% of the cars I see have the self same fault and are all running perfectly.

I'm more surprised if I don't see it

Russ

Correct me if i'm wrong....lol...... Surely a GlowPlug that is not functioning as intended Could cause misfire symptoms as described ?

regardless of the "Fault Code"

Paul.

marinabrian · 17th August 2018, 00:57

Quote:

Originally Posted by Sheraton

Correct me if i'm wrong....lol...... Surely a GlowPlug that is not functioning as intended Could cause misfire symptoms as described ?

regardless of the "Fault Code"

Paul.

Not at all Paul

None of my cars have functioning glow plug relays, and I find most diesels are the same.

It is a pleasant surprise when you find one that actually works, they are few and far between I can assure you.

Brian

Mickyboy · 17th August 2018, 10:36

M47R engine...Glow plug relay waste of time unless you want to go somewhere mega cold

Mick

iggle · 23rd August 2018, 07:57

Just a line to say I went over and seen BIG RUSS he was very helpful, plugged in his T4, fitted a ecu to try that did all sorts of stuff, but like me he is stumped LOL. suggested change eng wiring harness as it may have a bad connection or a break in it, so thats something for me to try. But a big thanks to Russ for all his hard work.

Dave

16th August 2018, 07:48	#1
iggle Newbie Rover 75 Join Date: Aug 2015 Location: Rossendale Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	Rover 75 rough idle and juddring when driving HELP I am out of ideas!!!!! I have a Rover 75 2.0cdti its a 2003 auto model. The tick over is erratic, and when I am driving along its like got a judder, like a slight misfire?? I have changed the MAF, the fuel rail sensor, the fuel filter, the under bonnet fuel pump Checked the fuel pressure out of the under bonnet pump thats fine, there is no air from the tank to the pump. I replaced the injectors, the injector wiring harness all to no avail. On the snap on diagnostic there is no faults stored except a heater plug code which wont cause the isssue thats driving me NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- insane.. I live in Rossendale Lancashire would really love some help. Cheers Dave

16th August 2018, 11:01	#3
iggle Newbie Rover 75 Join Date: Aug 2015 Location: Rossendale Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	judder I have always had a glow plug fault code for the six years I have owned the car and its been fine, most of the time the ECG valve has been disconnected etc so thats why I discount the glow plug as a cause, so many sensors doing so many things lol.

16th August 2018, 11:08	#4
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,473 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	BigRuss, one of the knowledgeable experts here is less than 30 miles away from you in Liversedge. Have a word with him. __________________ Steve T4 Location Map

17th August 2018, 10:36	#9
Mickyboy SERVICING AND DEALER DIAGNOSTICS MG ZT CDTI 135 + & MGZT CDTI AUTO 160 & ROVER 75 TOURER CDTI 160 TROPHY YELLOW Join Date: Aug 2013 Location: Hernebay Posts: 4,331 Thanks: 818 Thanked 2,414 Times in 1,141 Posts	M47R engine...Glow plug relay waste of time unless you want to go somewhere mega cold Mick __________________ [SIGPIC][/SIGPIC] T4 Owner Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings. Jobs to do: ,replace drivers lock,.[/SIZE]

23rd August 2018, 07:57	#10
iggle Newbie Rover 75 Join Date: Aug 2015 Location: Rossendale Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	Juddering 2.0cdti Just a line to say I went over and seen BIG RUSS he was very helpful, plugged in his T4, fitted a ecu to try that did all sorts of stuff, but like me he is stumped LOL. suggested change eng wiring harness as it may have a bad connection or a break in it, so thats something for me to try. But a big thanks to Russ for all his hard work. Dave

16th August 2018, 10:19	#2
Sheraton Posted a thing or two Rover 75 1.8t Join Date: Oct 2015 Location: Edinburgh Posts: 1,377 Thanks: 384 Thanked 409 Times in 267 Posts	I'm no Diesel expert Is there a reason why you would discount a Glowplug fault surely this would cause the symptoms you describe ? Paul.

16th August 2018, 11:26	#5
iggle Newbie Rover 75 Join Date: Aug 2015 Location: Rossendale Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	cheers will do