Speedy_Gonzales Posted December 25, 2008 Share Posted December 25, 2008 Still having problems with a sluggish TD5, originally thought I had resolved this by copper greasing the rod connecting the turbo to the actuator which seemed to improve things, but its still struggling around the 70 mark. It seems to splutter a bit in the revs build up around the 65mph mark, but if I keep my foot down it will hit 70, problem is its a TD5 and it used to do 80mph no worries...!!? Any pointers? Ta Jamie Quote Link to comment Share on other sites More sharing options...
TD5 power Posted December 25, 2008 Share Posted December 25, 2008 hi how long since the fuel and air filters were replaced? is it just top speed or sluggish all the time matt Quote Link to comment Share on other sites More sharing options...
Speedy_Gonzales Posted December 27, 2008 Author Share Posted December 27, 2008 hihow long since the fuel and air filters were replaced? is it just top speed or sluggish all the time matt Hi Matt, around 6k ago I perfromed a full service... The problem I had seemed to be a back pressure issue on the turbo, hence the actuator greasing, seemed to sort it for a while. Maybe need another service perhaps? Quote Link to comment Share on other sites More sharing options...
Porny Posted December 27, 2008 Share Posted December 27, 2008 I'd get some diagostic kit plugged in, and have all the live data checked. There are a couple of things that could be problems.... but unless you get it plugged in, you could just be fire fighting. It migh be as simple as a failed MAF sensor... How far North West are you? Ian Quote Link to comment Share on other sites More sharing options...
T1G UP Posted December 27, 2008 Share Posted December 27, 2008 Hi Matt, around 6k ago I perfromed a full service...The problem I had seemed to be a back pressure issue on the turbo, hence the actuator greasing, seemed to sort it for a while. Maybe need another service perhaps? back pressure? blocked intercooler? colapsed hoses? Quote Link to comment Share on other sites More sharing options...
Anderzander Posted December 27, 2008 Share Posted December 27, 2008 I didn't realise they'd do 80! I think I have too much mechanical sympathy and perhaps hearing that is too sensitive ?? - mines 'comfortable' (for me and the motor!) at around 60 - 65 and that's where I drive it. It'll run up to 70 on a downhill but that's about it.... Am I being too gentle? Quote Link to comment Share on other sites More sharing options...
T1G UP Posted December 27, 2008 Share Posted December 27, 2008 I didn't realise they'd do 80! I think I have too much mechanical sympathy and perhaps hearing that is too sensitive ?? - mines 'comfortable' (for me and the motor!) at around 60 - 65 and that's where I drive it. It'll run up to 70 on a downhill but that's about it.... Am I being too gentle? I feel your sympathy! maybe with a disco transfer box i'd do 80 but when i drove to stokton on tees from bath it took me 6 hours! I was the fastest thing on the motorway at one point due to the snow blizzard near darlington. Can't wait for the drive back Quote Link to comment Share on other sites More sharing options...
Keith Keir Posted December 27, 2008 Share Posted December 27, 2008 I didn't realise they'd do 80! I think I have too much mechanical sympathy and perhaps hearing that is too sensitive ?? - mines 'comfortable' (for me and the motor!) at around 60 - 65 and that's where I drive it. It'll run up to 70 on a downhill but that's about it.... Am I being too gentle? Dont worry thats what mines does to i was starting to think there was somthing wrong with mine when he pulled out the 80 Quote Link to comment Share on other sites More sharing options...
Anderzander Posted December 27, 2008 Share Posted December 27, 2008 I suppose the op's username should have put my mind at rest ! [no offence meant Jamie!] Quote Link to comment Share on other sites More sharing options...
Speedy_Gonzales Posted December 27, 2008 Author Share Posted December 27, 2008 I suppose the op's username should have put my mind at rest ![no offence meant Jamie!] Haha - none taken! It used to do 80 even 85-90 at a push (I normally stick to around 65-70 as a rule!), but it struggles to get over 70 these days, and Ive only done 10k in it since I bought it last year I have noticed a lot of deteriation in top end during that time though.. Been out for a good run down to North Wales in it today, would reach 70 but not go over, and at 70 it sounds like it used to at 80! Biggest issue is that the power spurts at between 60 & 65 and it starts spluttering. Im gonna get it plugged in, think I will ahve a chat with Porny and try and get a mapping, failing that gonna get it into dieselcraft near me for a check. Quote Link to comment Share on other sites More sharing options...
Anderzander Posted December 27, 2008 Share Posted December 27, 2008 Where do you live Speedy? I'm near Preston - I'm planning on taking mine down to Porny some time. I've a few other jobs further up the list first though. Quote Link to comment Share on other sites More sharing options...
JST Posted December 27, 2008 Share Posted December 27, 2008 fuel pressure regulator? Quote Link to comment Share on other sites More sharing options...
Speedy_Gonzales Posted December 28, 2008 Author Share Posted December 28, 2008 Where do you live Speedy?I'm near Preston - I'm planning on taking mine down to Porny some time. I've a few other jobs further up the list first though. Im near juction of M6 & M56... Ive PM'ed Porny about running diagnostics, if you want to travel down 'convoy' style, im up for it! LOL Jamie Quote Link to comment Share on other sites More sharing options...
Speedy_Gonzales Posted December 28, 2008 Author Share Posted December 28, 2008 hiIs it just top speed or sluggish all the time matt Hi Matt, funnily enough its just top end (4th and 5th Gear), my mate suggested it could be a collapsed/split hose running off the actuator which seems to create this issue.... Checked it out seems its okay! Its so frustrating, hence need to get diagnostics!!! Quote Link to comment Share on other sites More sharing options...
TD5 power Posted December 28, 2008 Share Posted December 28, 2008 sounds like its down on top end power have you checked the fins on the intercooler are clear hope you get it sorted and diagnostics show the problem. matt Quote Link to comment Share on other sites More sharing options...
mike4444244 Posted December 28, 2008 Share Posted December 28, 2008 Im near juction of M6 & M56... You must be near me then... My unit is in Northwich Mike Quote Link to comment Share on other sites More sharing options...
GregW Posted December 28, 2008 Share Posted December 28, 2008 I have exactly the same problem with my TD5 1999. It's like 70 is all it wants to do. The clue has to be that first thing in the morning (or after work) it pulls smoothly getting to 80 on the M'way then suddenly "missing" & speed reduces to 65 - 70 max. where it stays as a max. for the rest of the trip, or maybe its the air in Preston. Quote Link to comment Share on other sites More sharing options...
T1G UP Posted December 28, 2008 Share Posted December 28, 2008 back pressure? blocked intercooler? colapsed hoses? delaminted hoses can cause real probs.So can fuel pressure problems Quote Link to comment Share on other sites More sharing options...
Anderzander Posted December 28, 2008 Share Posted December 28, 2008 All of us up this way should meet up? Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted December 29, 2008 Share Posted December 29, 2008 Unfortunately the computer knows nothing about the fuel pressure. The only way to check that is to fit a gauge which reads to at least 5 bar and fit it in-line just before the pressure regulator. You will need a couple of male and female connectors and some pipe and a t-piece etc. Getting the connectors may be a problem. Use clear tubing so you can check for air in the system. The pump pressure should be 4 bar, but even if you get that pressure it may be that the pump will not flow enough with the engine running fast. If you fit the gauge to the output from the cylinder head, you can look for air in the pipes. This would normally be the injector copper seals leaking, quite common, though this will normally cause misfiring from idle upwards. Quote Link to comment Share on other sites More sharing options...
NoBBy400 Posted December 29, 2008 Share Posted December 29, 2008 My TD5 did a simalar thing started to mis-fire about 50mph in 4th gear. But some injector cleaner and a change of fuel did the trick. Used to use Asda but runs so much better on Shell. Quote Link to comment Share on other sites More sharing options...
JST Posted December 29, 2008 Share Posted December 29, 2008 fuel pressure regulator? I have exactly the same problem with my TD5 1999. It's like 70 is all it wants to do. The clue has to be that first thing in the morning (or after work) it pulls smoothly getting to 80 on the M'way then suddenly "missing" & speed reduces to 65 - 70 max. where it stays as a max. for the rest of the trip, or maybe its the air in Preston. anyone tried this side of it? Quote Link to comment Share on other sites More sharing options...
TD5 power Posted December 29, 2008 Share Posted December 29, 2008 hi Greg, the td5 has a feature called overboost this will limit the fueling to the engine if it see's the boost pressure go to high (around 20psi i think) from the MAP sensor. So for your engine i think either the MAP sensor has failed or the wastegate isn't actuating as it should. if you have access plugging it into diagnostics will allow you to see any fault codes and the value from the sensor. when you key off and the ecu shuts down the fault will be logged and when you key on again it is no longer 'active' and the ecu goes back to its standard settings until it detects overboost again. matt Quote Link to comment Share on other sites More sharing options...
landy andy. Posted December 30, 2008 Share Posted December 30, 2008 I think that a lot of people are having problems with the MAF sensor, and that if you diconnect it, that the ECU uses standard values (sorry if wrong term), and that the engine will then run much better if the MAF is the problem. Hope this makes sense and is some use. Andy Quote Link to comment Share on other sites More sharing options...
Speedy_Gonzales Posted December 30, 2008 Author Share Posted December 30, 2008 I have exactly the same problem with my TD5 1999. It's like 70 is all it wants to do. The clue has to be that first thing in the morning (or after work) it pulls smoothly getting to 80 on the M'way then suddenly "missing" & speed reduces to 65 - 70 max. where it stays as a max. for the rest of the trip, or maybe its the air in Preston. Spot on Greg, thats exactly whats happening to mine! Quote Link to comment Share on other sites More sharing options...
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