Results 1 to 5 of 5

Thread: Query on Cruise Control

  1. 19th September 2020, 07:47 PM #1
    gavinwibrow's Avatar
    gavinwibrow
    gavinwibrow is offline YarnMaster Silver Subscriber
    Join Date
    Oct 2011
    Location
    Fremantle WA
    Posts
    3,838
    Total Downloaded
    0

    Query on Cruise Control

    Never had anything like this happen before.
    Driving west between Pt Hedland and Karratha today pulling the brick with 2.7L/6 speed auto. Pretty flat overall.
    Noticeable headwinds for second half.
    Cruise sitting on 92 (= 90.5 on gps)
    About 60 km from Karratha car started to slow as if running out of puff. If I put my foot down on accelerator, would build back up to 92, then once foot off would slowly drop back down to low/mid 80s. Went back to normal roughly about the same time as the wind dropped, but rpm were pretty normal at varying speeds throughout.
    No slippage in gears, operating temps a bit high with high 30's ambient, but nothing haven't had before - eg 127 engine oil, 106 ATF, 107 coolant - all on GAP too.
    Gearbox was rebuilt under warranty at 160K km, and now on 270K km (includes 30K km towing the brick)
    Any thoughts?
    D4 MY16 TDV6 - Cambo towing magic, Traxide Batteries, X Lifter, GAP ID Tool, Snorkel, Mitch Hitch, Clearview Mirrors, F&R Dashcams, CB
    RRC MY95 LSE Vogue Softdash "Bessie" with MY99 TD5 and 4HP24 transplants
    SADLY SOLD MY04 D2a TD5 auto and MY10 D4 2.7 both with lots of goodies
    Reply With Quote Reply With Quote
  2. 19th September 2020, 10:03 PM #2
    BobD
    BobD is offline Wizard Supporter
    Join Date
    Dec 2011
    Location
    Forrestfield WA
    Posts
    1,306
    Total Downloaded
    0
    That is similar to what happens up hills with the LR cruise control. The car slows down, probably on full throttle, until it decides to change gear and then speeds back up to the set speed. Sounds to me like it was on full throttle into the wind and not quite at the point where it changes down so it never sped up. If you manually dropped a gear it would probably have been able to hold 90. Mine drops to mid 80's before changing down a gear. Even the D5 is the same, but it stays a bit closer to the set speed than the D4.
    Bob

    2010 D4 3.0TDV6 SE, ediff, LLAMS, 5 x GOE wheels, LT285/60R18 BFG K02's, GOE Compressor Guard, LR Tank, Mitch Hitch, ECB Bull Bar, Kaymar Rear Bar, Traxide, Safari Snorkel.
    2019 Discovery 5 SD6 SE, 20 inch wheels, 275/55R20 Nitto Grappler G2 tyres
    Reply With Quote Reply With Quote
  3. 20th September 2020, 05:38 AM #3
    gavinwibrow's Avatar
    gavinwibrow
    gavinwibrow is offline YarnMaster Silver Subscriber
    Join Date
    Oct 2011
    Location
    Fremantle WA
    Posts
    3,838
    Total Downloaded
    0
    Quote Originally Posted by BobD View Post
    That is similar to what happens up hills with the LR cruise control. The car slows down, probably on full throttle, until it decides to change gear and then speeds back up to the set speed. Sounds to me like it was on full throttle into the wind and not quite at the point where it changes down so it never sped up. If you manually dropped a gear it would probably have been able to hold 90. Mine drops to mid 80's before changing down a gear. Even the D5 is the same, but it stays a bit closer to the set speed than the D4.
    Ta. Sounds plausible, even though I'm travelling in 5th (six speed box) at just under 2,000 rpm with oversize tyres, but if I manually intervene via extra throttle, it then picks up, albeit gradually.

    I'll try dropping a gear next time it happens. Cheers
    D4 MY16 TDV6 - Cambo towing magic, Traxide Batteries, X Lifter, GAP ID Tool, Snorkel, Mitch Hitch, Clearview Mirrors, F&R Dashcams, CB
    RRC MY95 LSE Vogue Softdash "Bessie" with MY99 TD5 and 4HP24 transplants
    SADLY SOLD MY04 D2a TD5 auto and MY10 D4 2.7 both with lots of goodies
    Reply With Quote Reply With Quote
  4. 20th September 2020, 03:00 PM #4
    rocket rod
    rocket rod is offline Master Subscriber
    Join Date
    Jun 2009
    Location
    Perth
    Posts
    576
    Total Downloaded
    1.13 MB
    or try sports mode?
    Rod

    D4 MY16 5 seat TDV6 - LLAMS, Custom Drawers, OL Bar, Toyo Open Country, GOE Rims, Lithium DBS, eDiff, OA Long Range Tank, GAP Tool, Tracklander rack, Mitch Hitch, TPMS & Safari Snorkel
    Reply With Quote Reply With Quote
  5. 20th September 2020, 04:33 PM #5
    gavinwibrow's Avatar
    gavinwibrow
    gavinwibrow is offline YarnMaster Silver Subscriber
    Join Date
    Oct 2011
    Location
    Fremantle WA
    Posts
    3,838
    Total Downloaded
    0
    Quote Originally Posted by rocket rod View Post
    or try sports mode?
    Tried that on several occasions. The D4 in Sports mode is quite different to the D2 auto.
    The following comments relate to towing my block of flats.
    Since fitting the resistors for trailer indicators in particular, I can find no difference in normal D4 performance between normal Drive and Sports modes, except that depending on speed and hill steepness, I will sometimes flick across to Sports and over-ride to get a lower gear - overcomes the strange hesitancy to down-shift automatically on occasions. However, Sport but in drive mode as opposed to selected gear/s will hold a lower gear longer on steep uphill.
    D4 MY16 TDV6 - Cambo towing magic, Traxide Batteries, X Lifter, GAP ID Tool, Snorkel, Mitch Hitch, Clearview Mirrors, F&R Dashcams, CB
    RRC MY95 LSE Vogue Softdash "Bessie" with MY99 TD5 and 4HP24 transplants
    SADLY SOLD MY04 D2a TD5 auto and MY10 D4 2.7 both with lots of goodies
    Reply With Quote Reply With Quote
« What is this hose for | Compressor Whine »

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules

Search AULRO.com ONLY!
 Search All the Web!