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#12703 - 09/27/08 05:07 AM please help  
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boosted85 Offline
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i got this car cuz a friend of mine had his running 11s with hardly anything, so to start off its a 85 xr7 with the e6 manifold and the better turbo as he says a svo 5spd bbk 255lp fuel pump, the 88 brown injectors, to start i have set the timing to 10 degrees before tdc then replaced both coolant sensors,fpr, 02 sensor and motorcraft spark plugs, wires and the pcv, cap and rotor, tested the sensors they all read out perfect, but yet it still wont boost past 15 so then i put a pk1 ecu in with the stock maf now it will boost to 15 but cut out and pop real loud if it goes any further and it drops off like after 4k wont pull as hard as it did up to 4k, so then i read up and got a la3 with matching maf now the car will rev up to 3k and then like hit a rev limiter and wont go any further unless i pump the gas and then it pulls like a s.o.b up to 6k but it runs good until it hits 3k compression is good im getting very irritated with the car cuz it has become a money pit. im tempted to pull the 88 motor out of the junk yard with the wiring harness since thats where i got the ecu and maf and put it in my car.. i really like the car and dont want to give up on it and send it to the scrapper, please any ideas are greatly appriciated..


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12704 - 09/27/08 05:16 AM Re: please help  
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Keith Nubel Offline
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Are you sure that the turbo is good? The waste gate may be sticking open. What type of boost control are you using?
The problem isn't the computer.
It's probably in the ignition. What plugs and wires are you using?
Are you running an intercooler?
Have you checked for air leaks?


1985 TC
#12705 - 09/27/08 05:23 AM Re: please help  
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boosted85 Offline
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i dont think i have air leaks, i have a intercooler stock 88 the plugs are ngks 1 step colder, and wires are duralast but just got them tonight and yes it boost to 15 with the pk1 so im asumming the turbo is good. and the boost controler is a gilis


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12706 - 09/27/08 06:48 PM Re: please help  
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boosted85 Offline
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need some help please


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12707 - 09/27/08 07:35 PM Re: please help  
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EightySevenTurboCoupe Offline
Boosting 5 psi
EightySevenTurboCoupe  Offline
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Hampton Roads VA
Holy run-on sentences Batman! Codes??
Check cam timing, PIP, timing with spout out/in, tfi. Also an air leak at the bottom intercooler hose can be hard to detect...ask Pete lol.


Paul

'88 TurboCoupe 5spd stripper D/D.
255lhp Walbro, Kirban afpr, K&N, Magnecore wires, Motorcraft Iridiums, gutted cat - no muffler, 21psi & 12`btdc
'87 TurboCoupe 5spd (swap) every option but leather
#12708 - 09/27/08 08:58 PM Re: please help  
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boosted85 Offline
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well i have aftermarket boost hoses silicone, the timing is set to stock and that is correct, the tif is new, dont know about the pip but the previous owner replaced the whole dist before i got it, i have paper work. cam timing is dead on..


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12709 - 09/27/08 09:32 PM Re: please help  
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Keith Nubel Offline
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Keith Nubel  Offline
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Did you rewire the harness for he LA3?
Did you add the air sensor for the LA3?
Did you pull the codes? What are they?
Fuel pressure?
You might want to go back to Motorcraft plugs and wires since they are known to work in our cars.
Did you manually check the waste gate? Put a pressure / vacuum pump on it and see if it strokes open and closed.
Does your exhaust system flow properly?
Are you running good gas or old stuff?
How did you set the timing?
What's your TPS set at?


1985 TC
#12710 - 09/28/08 04:47 AM Re: please help  
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boosted85 Offline
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i think u hit it i never was told to rewire the wiring harness or add a air sensor, it would be great if u could tell me how


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12711 - 09/28/08 06:21 AM Re: please help  
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boosted85 Offline
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well i rewired it and it runs alot better but wont go past 10psi it starts popping and then misses for alittle bit then runs good again but it wont go past 10psi, i lowered my boost controller and still the same. i was hitting 15 with the pk1. Tomarrow im going to get the 88 lower intake with the act sensor. will that change anything hopefully it does cuz my friend got his to 25psi easy with 92 octane. also i know the 88 lower intake will bolt right on but will my 85 fuel rail bolt right on to it? thanks alot Keith Nubel


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12712 - 09/28/08 02:48 PM Re: please help  
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Keith Nubel Offline
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Keith Nubel  Offline
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Liberty Township, OH
1) You should be able to find the instructions for repinning the harness. Do a search. You have to move a couple of wires and add 2 (i think).
2) The LA3 won't correct any pre-exisitng problems.
3) The LA3 has to settings, 1 for regular fuel and 10-12 lbs boost, the other is premium fuel and 15 lbs. If you are using a Gilles valve then set the LA3 to premium.
I'm running a SVO PE in my car so I can't speak from 1st hand experience. Maybe someone else can jump in on this.


1985 TC
#12713 - 09/28/08 02:50 PM Re: please help  
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Keith Nubel Offline
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After you finish the LA3 go back and reset the timing and the TPS, clear out any codes and see if it throws any new codes.


1985 TC
#12714 - 09/28/08 06:40 PM Re: please help  
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boosted85 Offline
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ok do i need to wire in a premium switch or what i have no idea and none of the how to's i have found tell u either... thats the last thing i think i need but still kinda wondering y it wont boost higher than 10 and i thought it was cuz of the switch. Am i suppose to unplug something like a boost silonoid or something..??? this car is great, just a mystery


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12715 - 09/28/08 11:18 PM Re: please help  
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Keith Nubel Offline
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1985 TC
#12716 - 09/28/08 11:20 PM Re: please help  
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Keith Nubel Offline
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This site should also work for you. http://www.ptaaron.com/la3/index.html


1985 TC
#12717 - 09/29/08 01:54 AM Re: please help  
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Pete D Offline
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Northern OH
If it starts breaking up at the same boost level, it might be a boost leak like maybe the intercooler hoses. See http://natomessageboard.com/ultimatebb.php?ubb=get_topic;f=1;t=020898 for example


Pete Dunham


#12718 - 09/29/08 09:51 PM Re: please help  
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boosted85 Offline
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on the driver side of my engine on the lower intake there is a air temp sensor cant i use that instead of going and getting another one and drilling out my intake?


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12719 - 09/29/08 11:51 PM Re: please help  
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Keith Nubel Offline
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If you have the 87-88 manifold you might have the ACT or at least the threaded port to install it. The 83-86 didn't have it. Look in the tech articles for sensor locations.


1985 TC
#12720 - 09/29/08 11:51 PM Re: please help  
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Pete D Offline
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Northern OH
Quote:
on the driver side of my engine on the lower intake there is a air temp sensor cant i use that instead of going and getting another one and drilling out my intake?
No. The ECT , between the middle two fuel injectors is a coolant temp sensor. The ACT - air charge temperature sensor that you need to add measures the temp of the air in the runner of the lower intake, Two totally separate issues.


Pete Dunham


#12721 - 09/30/08 12:25 AM Re: please help  
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Wjameson Offline
Boosting 15 psi
Wjameson  Offline
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Brandywine, Maryland, 20613
I would put $$ on pip, popping/backfire is a definite symptom for bad PIP along with every other issue ...lol

Bill


87 TC 5spd, 2006 Daytona R/T Charger,03 Anniversary HD Lowrider
#12722 - 09/30/08 03:05 AM Re: please help  
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boosted85 Offline
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ok i checked for leaks and i deleted some, i took all the lines off the vacume tree and plugged all the of them then checked vacume it was the same 17-18-19 but now i hooked the waste gate directly to the turbo and now it only hits like 3-4psi but it pulls good for just that. but if i go over 10 it pops and stuff and then misses til i rev it up to 5k. how do i get 20psi out of this thing


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12723 - 09/30/08 03:43 AM Re: please help  
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Pete D Offline
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The WGA is set for about 9.5 psi. That means it can't boost less than that unless:

1. the gauge is bad. a distinct possibility, especially if you say it pulls good at 3-4 psi

or
2. the WGA is defective and opening the WG before boost reaches 9.5

or

3. The WG is partially open so that boost can't build to 9.5 psi

I would replace/substitute a good boost gauge into it for starters.


Pete Dunham


#12724 - 09/30/08 03:51 AM Re: please help  
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gadgetolds Offline
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So far both my birds had a cracked vac line for the boost gauge right at the tree, or at least leaking between the line and the rubber piece that goes on the tree


1988 Turbo Coupe - A237 cam, K&N Cone, T3(.60-.63), 255 Walbro, Gillis BV, gutted and knifed intakes, ported e6, 3" elbow/dp to dual 2.5s, Kirban and spearco fmic.

Up next, ported head, t3/t4 upgrade.
#12725 - 09/30/08 09:46 PM Re: please help  
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boosted85 Offline
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Omaha NE
how can i tell if my wg is defective u said its suppost to go up to 9psi how do i test that. also i have an autometer boost gauge that ill hook up to see if there is a diff


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12726 - 09/30/08 11:52 PM Re: please help  
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Keith Nubel Offline
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Use a small pump like the mighty vac pump. You can use it to test vacuum, bleed brakes, and pressure test. Very handy tool to have in the box.
Disconnect the linkage and see if the wastegate moves or is hanging up.


1985 TC
#12727 - 10/01/08 12:52 AM Re: please help  
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boosted85 Offline
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well it does work when u put pressure to it and it dont get stuck open. also when it is boosting at 4psi it pulls timing? it flattens out for some reason, now for the premium switch do i ground it from the ecu so that it is in premium mode at all times?


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12728 - 10/01/08 02:13 AM Re: please help  
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Keith Nubel Offline
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Keith Nubel  Offline
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I grounded mine on a SVO PE computer to get the premium mode. I'm not sure about the LA3.


1985 TC
#12729 - 10/01/08 03:30 AM Re: please help  
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boosted85 Offline
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ok but what pin did u do that too?


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12730 - 10/01/08 03:44 PM Re: please help  
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Keith Nubel Offline
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http://www.merkurencyclopedia.com/

Read through the "EEC into a XR" He tells you in there.


1985 TC
#12731 - 10/02/08 06:07 AM Re: please help  
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boosted85 Offline
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ok great it runs alot better now but it wont go past 10psi still i rechecked everything i did i get 18psi of vacume at 1000rpms and the idle is set for that. timing is bone stock specs, i still cant get this thing up to par....


Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
#12732 - 10/02/08 12:11 PM Re: please help  
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Keith Nubel Offline
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Keith Nubel  Offline
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Liberty Township, OH
Just curious, but what's your TPS set for?
Have you rechecked the piping of the Gillis Valve? The wastegate is pushed open at 10 psi by the turbo. The Gillis limits this and allows more boost.


1985 TC
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