Fast Parrot Posted March 22, 2011 Share Posted March 22, 2011 I've recently upgraded from the 1.6 TDCi (90) to the new 1.6 TDCi (95) + DPF and have a question about the performance. In the new motor, acceleration at low revs (below 1,750) is much slower than in my previous car. This seems more pronounced after a cold start before the engine has warmed up. When the engine speed [finally] exceeds 1,750 there is a sudden surge of power like a really long turbo lag. I have misjudged the time required for me to pull away and cross a gap in oncoming traffic several times because of this! I'm wondering, is this just a characteristic of the 1.6 TDCi (95) - what's it like for others, especially if you have experience with both engines? Is this something to do with the DPF causing increased exhaust pressures and a drawback of having one? Or is it because it's only covered just over 300 miles so not run in yet and too soon to be concerned about? Thanks in advance for any advice. Quote Link to comment Share on other sites More sharing options...
iNath Posted March 22, 2011 Share Posted March 22, 2011 Mine was fine when I bought it in August 2010. 2 weeks ago the dealer updated the drive train software which has resulted in the problems you mention above - a long lag when accelerating through low revs (that didn't happen before the update) Not sure what to do - before the update my car would stutter & surge crawling through traffic letting the revs pull it along, that's fixed now with the software update but it's caused this new issue. Quote Link to comment Share on other sites More sharing options...
tvAddict Posted March 23, 2011 Share Posted March 23, 2011 My 95PS is the same (now done 2300 miles)... very sluggish at low revs, and then a burst of power at about 1800 I can't really remember the 90PS I test drove, but I am sure I would have noticed it. Quote Link to comment Share on other sites More sharing options...
Loz Cheung Posted March 23, 2011 Share Posted March 23, 2011 How odd! I found it the complete opposite when I upgraded! Got one in July 2010, I'd found to 90ps to be a bit gutless, the 95ps version was much better! It felt more like the mk 6.5 versions when they used to fly! With mine the torque came in very early, so when the turbo kicked in it made the whole power delivery feel quite linear,as opposed to lag followed by a boost at 1800rpm. Thats annoying how they keep changing engine tunes but it could be for emissions purposes. I've read before that their latest 1.6 c-max diesels are detuned in 1st & 2nd to get decent emission ratings; could be the same here if there has actually been an ecu update. What losers. Take it back & demand for last years software ! Quote Link to comment Share on other sites More sharing options...
Glewin Posted October 29, 2012 Share Posted October 29, 2012 Hi all newby here I too have the same turbo lag on my fiesta zetec S tdci 95 :( my car went in to ford for 2 recalls last week, one of which was an ecu update and the other was a crank case pulley sensor, since i have the dredded turbo lagggggggggg. im thinking i should take it back to ford and get them to take a look as its pretty annoying and also dangerous at times when pulling out to over take. has any one actually contacted ford about this as yet ? Quote Link to comment Share on other sites More sharing options...
b1g_dav3 Posted October 29, 2012 Share Posted October 29, 2012 It's turbo lag, what do you want them to do? Turbo's don't spool up instantly as they go off exhaust gasses so you'll get it whatever Ford do. All you can do is fit a smaller turbo. I don't really see how turbo lag can in any way be seen as dangerous, if you can't get past something don't overtake it. Or rather than expecting maximum boost at 1500rpm, you pull the revs to 3.2k, drop the clutch and hey presto you have boost. Quote Link to comment Share on other sites More sharing options...
sambooka Posted October 29, 2012 Share Posted October 29, 2012 It's turbo lag, what do you want them to do? Turbo's don't spool up instantly as they go off exhaust gasses so you'll get it whatever Ford do. All you can do is fit a smaller turbo. I don't really see how turbo lag can in any way be seen as dangerous, if you can't get past something don't overtake it. Or rather than expecting maximum boost at 1500rpm, you pull the revs to 3.2k, drop the clutch and hey presto you have boost. Maybe a twin turbo mod is needed a small turbo and a big one everyone's a winner better power delivery higher bhp Quote Link to comment Share on other sites More sharing options...
b1g_dav3 Posted October 29, 2012 Share Posted October 29, 2012 Maybe a twin turbo mod is needed a small turbo and a big one everyone's a winner better power delivery higher bhp I'd prefer a twin-charge with a supercharger really, boom lag gone :P Quote Link to comment Share on other sites More sharing options...
Marcr1 Posted October 29, 2012 Share Posted October 29, 2012 Sounds good to me^ :D POWERRRRRR Quote Link to comment Share on other sites More sharing options...
b1g_dav3 Posted October 29, 2012 Share Posted October 29, 2012 Imagine the torque figures on a twin-charged diesel :P Quote Link to comment Share on other sites More sharing options...
sambooka Posted October 29, 2012 Share Posted October 29, 2012 I wonder if this could really be done Quote Link to comment Share on other sites More sharing options...
Loz Cheung Posted October 29, 2012 Share Posted October 29, 2012 Stop complaining! Waiting till 1750 is nothing - double that amount of revs for the !Removed! petrol to get properly going! :P Quote Link to comment Share on other sites More sharing options...
b1g_dav3 Posted October 29, 2012 Share Posted October 29, 2012 I wonder if this could really be done It's the same as twin-charging a petrol, it can be done easy enough I suppose, just need to know how and have the means I suppose. Quote Link to comment Share on other sites More sharing options...
alexp999 Posted October 30, 2012 Share Posted October 30, 2012 I used to get frustrated with turbo lag as well, but once you get confident with the car you find you just need to give her a bit of a boot, drop a gear, get the revs up and you can hear a two tone song from the engine as she lifts off from the diesel torque and then boosts from the turbo. Quote Link to comment Share on other sites More sharing options...
b1g_dav3 Posted October 30, 2012 Share Posted October 30, 2012 Or you'll over-do it, spin the wheels in first and well into second :P Quote Link to comment Share on other sites More sharing options...
alexp999 Posted October 30, 2012 Share Posted October 30, 2012 Or you'll over-do it, spin the wheels in first and well into second :P Yeah you can over do it if moving away from a stand still, works well for overtakes though. The problem I have is that the tyres on the 16" Titanium alloys have buggar all grip, give them a damp road and you have to pull out of a junction like a granny to stop the traction control coming on.... argh! Quote Link to comment Share on other sites More sharing options...
b1g_dav3 Posted October 30, 2012 Share Posted October 30, 2012 Lol, the ZS one's are decent, but timed right I can have it spinning up through second gear easy. Good ole torque. Quote Link to comment Share on other sites More sharing options...
Glewin Posted November 4, 2012 Share Posted November 4, 2012 whats the point in buying a ford fiesta 1.6 tdci which states around 68mpg to save on fuel costs if you have to floor it to get smooth gear changes ? ive booked it into ford for friday and ill be asking them to downgrade the !Removed! ecu upgrade as it was absolutley fine before they touched it, i dont enjoy driving my car now because of the issue Quote Link to comment Share on other sites More sharing options...
alexp999 Posted November 4, 2012 Share Posted November 4, 2012 whats the point in buying a ford fiesta 1.6 tdci which states around 68mpg to save on fuel costs if you have to floor it to get smooth gear changes ? ive booked it into ford for friday and ill be asking them to downgrade the !Removed! ecu upgrade as it was absolutley fine before they touched it, i dont enjoy driving my car now because of the issue I don't have to floor it to get a smooth change. The only time you have to give it a bit of a boot is when you want a quick get away to avoid the turbo lag. How many miles since the software upgrade? The car needs time to re-learn the engine after an upgrade. Quote Link to comment Share on other sites More sharing options...
b1g_dav3 Posted November 4, 2012 Share Posted November 4, 2012 Yeah I can drive mine going no higher than 1500rpm and it's as smooth as anything. Good times. And good for economy too. Quote Link to comment Share on other sites More sharing options...
knocker1 Posted June 6, 2013 Share Posted June 6, 2013 I have a 1.6 95bhp and find it awful to pull away in it just dies before pulling and why should you have to floor it surely this isnt right, I drive a 1.4 turbo diesel van and never have a problem pulling away no lag at all. The car is in for a service this week and I will be asking for it to be looked at. Lets see what they say? probably the usal BS Quote Link to comment Share on other sites More sharing options...
b1g_dav3 Posted June 6, 2013 Share Posted June 6, 2013 The pre-facelift diesel has quite a problem with turbo lag, it could be that you're experiencing. Always easy enough to have it checked out though. Quote Link to comment Share on other sites More sharing options...
samjprobinson Posted June 6, 2013 Share Posted June 6, 2013 There's a newer update for it which was released early 2012 after all the complaints from the mid 2011 ECU software. Get Ford to remap it with the latest available and it should be solved. There are some that haven't had the very latest software and hence the hesitant acceleration. The latest version is much better and isn't anywhere near as flat as it used to be up to 1800RPM! Trust that helps if not let me know and I'll get the info sheet of Hendy Ford and post it on here! 1 Quote Link to comment Share on other sites More sharing options...
knocker1 Posted June 9, 2013 Share Posted June 9, 2013 Serviced Friday, I was told they couldnt fault the flat spot, but since the service the car seems to be pulling away so much smoother, could they have just re mapped it without saying, I will monitor the performance over the next few weeks. Thanks for the replies. Quote Link to comment Share on other sites More sharing options...
Terry52 Posted May 18, 2022 Share Posted May 18, 2022 I have got 2011 zetec s diesel seen loads of talk about turbo lag I had it stage 1 remap and it soved the problem Quote Link to comment Share on other sites More sharing options...
.thumb.png.327e57655a9a82472089ef077ae02c11.png)
Recommended Posts
Ford UK Shop
Sponsored Ad
Name: eBay
Ford Model: FordUK Shop
Ford Year: 2024
Latest Deals
Ford UK Shop for genuine Ford parts & accessoriesDisclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via the club
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.