Won't rev above 3.5k under load

88 TC 5-speed all options:

I finally got done with my 3g upgrade [Image: biggrin.gif]. But I am still having a problem when running at WOT. I can get whatever boost I set the gillis to, currently 15psi, but I am not able to tach over 3.5 grand. If I put the car in nutral it will tach all the way up, but under load 3.5 is it.

Thanks,
James

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88 TC 5-speed Black, all options.
88 Thunderbird LX 5.0 All options except Leather.
87TC Parts car five speed all options.
85 tbird 5.0

What happens when you hit 3500? Does it miss, like ignition? Does it run out of fuel? Is it leaking boost?

Does it fall on it's face really hard? Might be the vam hose collapsing.

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mods: SDS Digital Fuel Injection, ported & polished big valve head(1.89/1.59), Solid lifters, Esslinger roller cam #2277, Esslinger adj. cam pulley, custom upper and ported lower intakes, 60-1 stage III .63 turbo, powerstroke intercooler, 60mm throttle body, 75pph injectors, Walboro 255HP pump, Kirban adj. fuel reg., ATR header, 3" exhaust with Dynomax Ultraflow muffler, MSD 6al, MSD coil, MSD Launch Control, MSD 8.5mm wires, K&N filter, Spec stage III clutch, Greddy Profec B boost controller, Weld Draglites with M/T ET Street 26x11.5/15

check your fuel pressure, if thats ok, it porlly ignition

When you check fuel press, do it with gauge taped to windshield so you can see press under WOT & boost. SHould be base (39 psi stock) plus boost press.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 21 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 02 Taurus Vulcan(wifes car)

Thanks guys! I found my rev limiter. The guy who had the car before me installed a front mount K&N and used a 3" rubber hose to get it from the vam to the K&N located in front of the radiator. I found the rubber hose was collapsing at the 90 where it turns to go in front of the radiator. She finally tachs out, builds boost, and puts a smile on my face.

The only problem I am having now is if I try to run it WOT before it warms up it will sputter and run terrible. once it warms up it runs fine, any suggestions. I know I should let it warm up anyway, but it still should not do this.

Thanks,
James

I try to run it WOT before it warms up it will sputter and run terrible. .....any suggestions.

Weekly contributions to a rebuild the engine account. [Image: biggrin.gif]

Pull the codes.

With respect to what Pete said, Amen!

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87 TC, T-5 swap, billet quadrant / adj. cable, solid state IVR, fog light relay mod, PST suspension, KYB-AGX fronts, Gas-A-Just rears, K&N cone, billet alum BCV, med. red, 90's wing, polished snowflakes and centers, 189K+ Mi's., daily driver, feeding on ricers!

I will pull the codes today. I actually have a motor and tranny I am pulling out of my parts car. I was planning on taking some time and building it up right and then swapping it into the car. I just wanted to make sure that I had everything working before I did that. But if the problem is in the engine I guess it is time to start deciding which parts I want to use. I will still pull the codes to see if it is something simple. Now if I can just find a hidden stash of money somewhere I'll be set.

My car used to stall if I didn't give it time to warm up and then I got on it. I changed the coolant temperature sensor and now I can start it and never stall.

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1987 Turbocoupe, black, 5-speed, all options besides leather and moonroof, 198K+ and running strong, 17x9 Chrome Detroit Cobra Rs w/ 255/45/ZR17 Kumho Ecsta Supra 712s, MOMO shift knob and boot, mustang shifter (easier to reach), K&N cone air filter with cold air induction, dynomax super turbo exhaust, brute force clutch, tinted windows, white faced indiglo gauges, 2 12" Rockford Fosgate subs and RF amp, Sony XPlod and Pioneer speakers, Pioneer CD player, painted the faded red molding lines blue, painted interior parts blue, neon dome light, aftermarket foglights, runs great, eats rice for dinner. New motor going in soon.
Wanna see my beast? http://www.cardomain.com/member_pages/vi..._id=314900