ibs 308 Posted December 27, 2014 Author Report Share Posted December 27, 2014 Have you checked the throttle body the wiring around it?Sent from my iPhone using TapatalkI've checked all the wiring Jay. Link to post Share on other sites
ibs 308 Posted December 27, 2014 Author Report Share Posted December 27, 2014 Also I thought I would mention that just before it cuts out the battery light momentarily comes on and flickers. The battery is brand new and I checked the earth and even run another earth to it just incase the first one isn't good enough. Link to post Share on other sites
cactusjackslade 146 Posted December 27, 2014 Report Share Posted December 27, 2014 There definatly seems to be a problem regarding the maf as when you unplug it the engine starts.. Exactly Where have you got the maf located? I can see the air filter is now mounted where the battery was.. Cannot see from pics where the maf is? Link to post Share on other sites
Bealieboy 1,625 Posted December 27, 2014 Report Share Posted December 27, 2014 What a bar steward! Sent from my iPhone using Tapatalk Link to post Share on other sites
ibs 308 Posted December 27, 2014 Author Report Share Posted December 27, 2014 There definatly seems to be a problem regarding the maf as when you unplug it the engine starts.. Exactly Where have you got the maf located? I can see the air filter is now mounted where the battery was.. Cannot see from pics where the maf is?The MAF is in between the 2 red silicone connectors on the silver section. It's a united motorsport 4" MAF housing. Link to post Share on other sites
cactusjackslade 146 Posted December 27, 2014 Report Share Posted December 27, 2014 The MAF is in between the 2 red silicone connectors on the silver section. It's a united motorsport 4" MAF housing.Yes got it now.. It does look close to the turbo compared with other installs Iv seen.. At far as I understand it as bealieboy said earlier if the maf is too close to turbo it detects the turbulence and causes over fueling. This does cause running problems but I'm no expert and cannot say if the symptoms are the same as yours with not starting, cutting out or just simply poor performance. Hopefully someone with more experience can help regarding its location and the symptoms ur getting.... Not easy finding the fault with no fault codes Link to post Share on other sites
VR6CABBS 1,311 Posted December 27, 2014 Report Share Posted December 27, 2014 I feel your pain. You watch, it will be something so minor. Keep up the good work. This is a quality write up and I'm sure many of us will revert back to this at some point in the future. Hope you get sorted soon ibs..... Link to post Share on other sites
J4Y VR 36 Posted December 27, 2014 Report Share Posted December 27, 2014 Did you extend the loom for maf if so have you wired them up correctly. Sent from my iPhone using Tapatalk Link to post Share on other sites
ibs 308 Posted December 28, 2014 Author Report Share Posted December 28, 2014 Yes got it now.. It does look close to the turbo compared with other installs Iv seen.. At far as I understand it as bealieboy said earlier if the maf is too close to turbo it detects the turbulence and causes over fueling. This does cause running problems but I'm no expert and cannot say if the symptoms are the same as yours with not starting, cutting out or just simply poor performance. Hopefully someone with more experience can help regarding its location and the symptoms ur getting.... Not easy finding the fault with no fault codes Been waiting for the chap I bought the turbo off to message me back to see if he had any issues. Not heard anything yet. Link to post Share on other sites
ibs 308 Posted December 28, 2014 Author Report Share Posted December 28, 2014 I feel your pain. You watch, it will be something so minor. Keep up the good work. This is a quality write up and I'm sure many of us will revert back to this at some point in the future. Hope you get sorted soon ibs.....It's always the way ain't it. Going back over there today to carry on fault finding. I've got a Greddy profec boost controller which has all the vacuum hoses connected but no electrical connections yet. I'm wandering if that could be causing an issue. Link to post Share on other sites
ibs 308 Posted December 28, 2014 Author Report Share Posted December 28, 2014 Did you extend the loom for maf if so have you wired them up correctly. Sent from my iPhone using TapatalkYes Jay I extended the loom. Got a mate to help me with that as I didn't have a gas powered soldering iron. We checked it all as well. Link to post Share on other sites
Mk3highline 287 Posted December 28, 2014 Report Share Posted December 28, 2014 Are you using a whole new ecu or just a chip?It could be the ecu?? Maybe Link to post Share on other sites
ibs 308 Posted December 28, 2014 Author Report Share Posted December 28, 2014 I'm using an ecu I was given with the turbo. It's supposed to have a united motorsport base map for 440cc injectors on it. Link to post Share on other sites
Russvrt 85 Posted December 28, 2014 Report Share Posted December 28, 2014 If I was a gambler I would put money on this being a vac leak,,you may have melted one or pulled one out when taking it to the exhaust place ,, VR6CABBS 1 Link to post Share on other sites
VR6CABBS 1,311 Posted December 28, 2014 Report Share Posted December 28, 2014 If I was a gambler I would put money on this being a vac leak,,you may have melted one or pulled one out when taking it to the exhaust place ,, I'm thinking this aswell. Two possible issues. Fuel and Air. Vehicle runs which seems to rule out fuel but doesn't rule out fuel starvation. Check all your vac pipes for even the slightest of cracks or splits or leakage. Bealieboy 1 Link to post Share on other sites
ibs 308 Posted December 28, 2014 Author Report Share Posted December 28, 2014 If I was a gambler I would put money on this being a vac leak,,you may have melted one or pulled one out when taking it to the exhaust place ,,The exhaust place literally just connected the main pipe to the downpipe which was already in situ and put on the backbox. No vacuum pipes were touched.Would the brake servo vacuum pipe have an effect on the way the car runs if there were a leak in it? Link to post Share on other sites
ibs 308 Posted December 28, 2014 Author Report Share Posted December 28, 2014 (edited) If there was fuel starvation would I see a drop in the fuel pressure? I've got a gauge connected to the fuel pressure regulator and the pressure does not drop although I can't really check what it's doing while im driving it. Edited December 28, 2014 by ibs Link to post Share on other sites
Russvrt 85 Posted December 28, 2014 Report Share Posted December 28, 2014 I had a leak in my servo pipe and it stopped mine from starting ,took ages to find it..I took the engine back to bare essentials blocked all vac pipes at route and put one back at a time.. Link to post Share on other sites
ibs 308 Posted December 28, 2014 Author Report Share Posted December 28, 2014 Ok another thing is when I plugged in a code reader it also gave me real time stats. The vacuum was showing as 29.9 is that right? Link to post Share on other sites
ibs 308 Posted December 28, 2014 Author Report Share Posted December 28, 2014 I had a leak in my servo pipe and it stopped mine from starting ,took ages to find it..I took the engine back to bare essentials blocked all vac pipes at route and put one back at a time..I will check mine again today. I had to extend mine and the only thing I could think of using was a copper tube which fit snugly inside the existing servo line. Then it had to get connected to the intake manifold with a silicone connector which is slightly bigger than the copper tube. So there might be a leak at that end. Link to post Share on other sites
VR6CABBS 1,311 Posted December 28, 2014 Report Share Posted December 28, 2014 If there was fuel starvation would I see a drop in the fuel pressure? I've got a gauge connected to the fuel pressure regulator and the pressure does not drop although I can't really check what it's doing while im driving it.If limited fuel was getting through this would be plenty to make the car idle. Only when you throttle it you would see a difference and if there was starvation the engine would stall. Try checking it first whilst you pal is sat in the car. See if there's any difference in pressure or if it drops. Bealieboy 1 Link to post Share on other sites
ibs 308 Posted December 28, 2014 Author Report Share Posted December 28, 2014 Ok I will try that later. Cheers Link to post Share on other sites
VR6CABBS 1,311 Posted December 28, 2014 Report Share Posted December 28, 2014 Ok I will try that later. CheersWhere we at bro?? Haha. You got me curious and checking for updates every half hour. Bealieboy 1 Link to post Share on other sites
dave_424 48 Posted December 28, 2014 Report Share Posted December 28, 2014 I feel like the fact that it doesn't start with the maf is the problem, obviously that's a major problem that should be sorted before looking at anything else. Can you check a maf reading with vcds by blowing through the maf? Link to post Share on other sites
ibs 308 Posted December 28, 2014 Author Report Share Posted December 28, 2014 Boys I'm currently sitting at a service station on the m1 just pulled over to check things over. Been driving the car for around 45mins and it has tried to cut out on the odd occasion but apart from that it has been fine. The car cutting out has been due to the fuel pressure being too high. The original fuel regulators are 3 bar so I set mine to just under 3 bar and tried it over 3 bar too before. But today we tried it at 2 bar and it doesn't cut out nowhere near as much. So I'm guessing the fuel pressure just needs to be adjusted correctly. Apart from that I tried playing with the MAF. What happens is if the car is running and I plug the MAF in with it out of the housing it seems fine but then as soon as I go to put the MAF back into the housing it cuts out. J4Y VR 1 Link to post Share on other sites
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