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I can't contain my excitement any more. I promised myself I would refrain from saying anything until the car was back on the road but I guess its a broken promise already.

 

Today for the first time in a year my car has started. Alot of persistence and an element of luck has seen the car actually move under its own steam today. Its not MOT'd taxed or insured so I could only go forwards and backwards 2 feet but by hell it moved on its own dammit.

 

Hat off to RT (from the aristo forum) his optimism has been a bit catching today and I actually cracked a smile lol. I'll go into more detail tomorrow if and when we make headway on getting it ready to consider an mot.

 

Suffice it to say I've all but decided to skip the AEM so am in the market for a piggy back unit that can be tuned unlike the fcon s I have fitted. There is a bit of a deal going on an emanage on the forum I may have to consider lol.

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Well what can I say now. As its started so it continues. Expect the bizarre and you won't be disappointed with this machine.

Firstly it won't run with the stock ECU or the Fcon. Then with a 12 volt jolt the fcon springs to life and yesterday life was breathed back into the beast. She coughed and spluttered on year old petrol but breath she did with an engine management light and a handful of codes. She even moved under her own power. Today we moved her to check the gearbox wiring at the box to see if her previous encounter with a certain AEM fitter had indeed resulted in tampered with gearbox wiring re-enforced by the multitude of gearbox diagnostic codes to find no evidence of anything out of the ordinary(strange seems as the guy told me he had to rewire the box and that the AEM map had reversed polarity solenoid mapping on it and worked with that map and not the map Ryan has for all stock boxs).

Then for some reason she won't restart on the fcon. RT finds the no 4 has no spark and the plugs are fouled which was no surprise as it runs rich because for some bizarre reason the O2 sensor is nowhere to be found. I have a spare igniter unit so in that goes. No joy with the fcon fitted but wait, take the fcon out and leave the stock ecu in on its own and va va voom off she goes. Runs a bit pig rich but runs. Toddle around a bit and its definitely selecting 1 2 and 3 gear and no engine management light despite the fact that there is no O2 sensor (theres a soft fault but no hard fault)and no gearbox faults either. So now we are scratching two heads. Its supposedly got 650cc injectors in it and the stock ecu is running them?? The fcon will not even start the car, stick a plug tester on and theres no ignition signal at all. Now ;ets have a go at some extra bizarre, plug the knackeredish won't run the car with the stock ecu igniter pack back in and the fcon and it tries to fire up again. Replace the igniter unit with the new one and no ignition signal again = no starting.

 

Ministry of oddness is all I can say. From here the plan is to put stock injectors back in to try and trim out that pig richness and if possible narrow the band signal from the AEM wideband or stick an O2 sensor back on the car. Then run it over a couple of months with the adjustable wastegate wound down to stock levels of power. See how much more bizarre the car can get.

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  • 2 months later...
  • 4 weeks later...

Todays another milestone in the resurrection. I got an MOT today. Had some some stuff to do which mainly involved the stock stuff I'd put on ie exhaust and a ball joint which I decided to replace the whole front end suspension arms so I don't get it again next year, and the brake pads on the back being worn out forced me to stick the UK rear brakes I had on a shelf for 3 years on the car (I'd been putting it off because the brake bleeding procedure is a bit long winded and you can't pressure bleed the system) so now I am brake balanced.

 

So next up a 4 wheel alignment due to the ball joints being longer than the original part (blue point parts are not the same as original but an 1/8th of the cost) and the offside front wheel going to steel with half a tread on the outside.

 

After that I'll be running it at BPU levels of power on the stock ECU to see how the ECU goes. If it doesn't mely internally then I'll have to figure out if I want to repair the AEM or go with a piggy back fuel controller.

 

One thing is for sure if its not raining I won't be taking my crappy rover to work any more.

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  • 3 months later...

Ah well short lived that was. She's blown something in the gearbox. Clunking is coming from the torque converter area. There's a loss of power transmission. It will drive just but not far. Its slamming very heavily into drive. Looks like my suspicion that the gearbox wiring wasn't right is manifesting itself in a blown box. Only real option here is going manual but at £3k plus for a V160 conversion job these days is a 91 aristo worth it?

RT a guy on the aristo forum is doing some investigation work for fitting a t56 box with an adaptor. I have available to me a W58 box but general consensus is a single turbo will destroy that in nano's. Only other option is an R154 I guess.

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I would if I knew the wiring was good to the box but I suspect its not. The AEM would not control the box with a stock autobox map. Ryan had to lay DT's box map over his engine map. It hasn't been changing right since DT touched it.

 

Get hold of Dude or Matt at AFR, I believe they were working on Dude's car being controlled by an AEM and had some way of having the line pressure being managed.

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The car is running the stock ecu and injectors at the moment. I believe thats what has shagged the gearbox as the AEM had a rather different auto box map on it than a stock auto box map. If I posted a copy of the map (not Ryans obviously) and someone could compare it to a map from a standard auto car you'd be able to see the difference with how the solenoids were being controlled. If I could then set the wiring back to how it should be if I knew which wires were crossed.

WORKMAP.V1.19.zip

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Ah I think I see what you're saying now.

 

Your car has had the autobox wiring changed to suit a map done for the AEM. You've then re-fitted the stock ECU without reverting back to the original gearbox wiring, so the stock ECU would have been doing strange things to the gearbox.

 

Well, there aren't all that many wires that go to the autobox, so it shouldn't be too difficult to make sure that the wires at ECU end of the loom are showing continuity to the correct pins at the other end of the loom, and I'm sure that whatever modification has been done would be pretty apparent anyway.

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Nah it was more along the lines that he f*cked about with the wires because he couldn't get the car to change gear with the AEM fitted. This was because there was a dodgy joint to the rev signal caused by the apexi RSM not being installed very well (this was found by arnout and dimitri). It suddenly started working so instead of putting the wires back as they should be he just altered the AEM map. I even went back to get the car re-mapped because the gear change was so rough in and out of first. A stock box and a rewire might do the job. May even just be a torque converter which could prompt me to stick a high stall in it.

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