P1300 Boost Calibration Fault...on a non-Turbo?!

mbonwick · 19th February 2019, 18:12

So the latest twist in the ongoing saga of my K series non-turbo that is rough as a badgers backside when cold is...

a recurring P1300 "Boost Calibration Fault" error code (and also P0300 random multiple misfire, and P1316 excess emissions - but that's not surprising).

Now I can understand P1300 on a turbo model, but not on a NASP? Google hasn't been much help either...

Anyone any ideas?

mbonwick · 23rd February 2019, 16:44

Bit of a bump....any ideas?

Yorkshire GOC · 23rd February 2019, 16:52

Follow this link - the same OBD codes are evident and the engine is i think a non turbo on a Freelander - answer looks like a failing coil pack

https://forums.mg-rover.org/mg-zt-ro...-fault-498734/

Yorkshire GOC · 23rd February 2019, 16:53

See post of 04-02 13 and subsequent posts .

mbonwick · 23rd February 2019, 20:50

Fairly sure it's not a coil pack as it only misses when cold, and there's no specific cylinder codes stored.

Bit of background to this - it's been absolutely awful when cold since I replaced the cylinder head and put a metal manifold on. Part of that problem was overfuelling due to a damaged TMAP connector. Now it's got the new connector crimped in, it's better but not perfect.

Yorkshire GOC · 24th February 2019, 11:07

As your issues are when the engine is cold - failing IMG (when engine warms up it will expand ) -comes to mind as you have put on a new manifold. Could the air intake be compromised - this would give you the symptoms you describe but would have though even when hot??

mbonwick · 24th February 2019, 12:27

It's the metal VVC manifold, so no issues with IMG.
I've done the usual leak check by spraying brake cleaner on everything - nothing to report.

mbonwick · 24th February 2019, 21:24

The other thing it does (which makes me think I need another look at the TMAP sensor).

When it's cold and not very happy, you can lightly press the throttle to bring the revs up to c.1500. If you keep your foot in the same place and don't move the throttle, the revs will creep up to say 2100rpm in several 'steps' with a bit of wavering in between.

19th February 2019, 18:12	#1
mbonwick Gets stuck in Connoisseur SE 1.8 Auto Saloon Join Date: Jul 2015 Location: Kendal Posts: 633 Thanks: 129 Thanked 176 Times in 147 Posts	P1300 Boost Calibration Fault...on a non-Turbo?! So the latest twist in the ongoing saga of my K series non-turbo that is rough as a badgers backside when cold is... a recurring P1300 "Boost Calibration Fault" error code (and also P0300 random multiple misfire, and P1316 excess emissions - but that's not surprising). Now I can understand P1300 on a turbo model, but not on a NASP? Google hasn't been much help either... Anyone any ideas?

23rd February 2019, 16:52	#3
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,063 Thanks: 1,842 Thanked 623 Times in 469 Posts	Follow this link - the same OBD codes are evident and the engine is i think a non turbo on a Freelander - answer looks like a failing coil pack https://forums.mg-rover.org/mg-zt-ro...-fault-498734/ __________________ She came off the Longbridge Line on 20-05-2003 The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.

23rd February 2019, 16:53	#4
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,063 Thanks: 1,842 Thanked 623 Times in 469 Posts	See post of 04-02 13 and subsequent posts . __________________ She came off the Longbridge Line on 20-05-2003 The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.

24th February 2019, 11:07	#6
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,063 Thanks: 1,842 Thanked 623 Times in 469 Posts	As your issues are when the engine is cold - failing IMG (when engine warms up it will expand ) -comes to mind as you have put on a new manifold. Could the air intake be compromised - this would give you the symptoms you describe but would have though even when hot?? __________________ She came off the Longbridge Line on 20-05-2003 The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.

23rd February 2019, 16:44	#2
mbonwick Gets stuck in Connoisseur SE 1.8 Auto Saloon Join Date: Jul 2015 Location: Kendal Posts: 633 Thanks: 129 Thanked 176 Times in 147 Posts	Bit of a bump....any ideas?

23rd February 2019, 20:50	#5
mbonwick Gets stuck in Connoisseur SE 1.8 Auto Saloon Join Date: Jul 2015 Location: Kendal Posts: 633 Thanks: 129 Thanked 176 Times in 147 Posts	Fairly sure it's not a coil pack as it only misses when cold, and there's no specific cylinder codes stored. Bit of background to this - it's been absolutely awful when cold since I replaced the cylinder head and put a metal manifold on. Part of that problem was overfuelling due to a damaged TMAP connector. Now it's got the new connector crimped in, it's better but not perfect.

24th February 2019, 12:27	#7
mbonwick Gets stuck in Connoisseur SE 1.8 Auto Saloon Join Date: Jul 2015 Location: Kendal Posts: 633 Thanks: 129 Thanked 176 Times in 147 Posts	It's the metal VVC manifold, so no issues with IMG. I've done the usual leak check by spraying brake cleaner on everything - nothing to report.

24th February 2019, 21:24	#8
mbonwick Gets stuck in Connoisseur SE 1.8 Auto Saloon Join Date: Jul 2015 Location: Kendal Posts: 633 Thanks: 129 Thanked 176 Times in 147 Posts	The other thing it does (which makes me think I need another look at the TMAP sensor). When it's cold and not very happy, you can lightly press the throttle to bring the revs up to c.1500. If you keep your foot in the same place and don't move the throttle, the revs will creep up to say 2100rpm in several 'steps' with a bit of wavering in between.