North American Turbocoupe Organization



Laggy Throttle Response
23027 Offline
Senior Member
#1
So i'm kind of wondering.. Is there a way to adjust the throttle response? It seems kind of.. Slow. It takes a while before the RPM's start to climb. Not LONG, but compared to like, a Suzuki Swift I have at work it's much slower.

Any way to adjust this?
87 Turbo Coupe
New Heart & Lungs as of 245,225km.
302 H.O Swapped.. Bolt ons.. Tremec 3550.. 4.10's.. 18's..
https://postimg.org/image/efv6lnn35/
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Jeff K Offline
Administrator
#2
Remember you have a 2.3 L 4 cylinder engine in a car that weighs well over 3500 lbs with a driver and a full tank of gas. Off boost throttle response will never be that great.... that is what the turbo is for.

Have you checked your ignition timing? Retarded timing will kill tip in throttle response. Might also want to verify cam timing is correct.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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23027 Offline
Senior Member
#3
Oh I didn't mean when I was driving..

I meant just idling when I rev the car
87 Turbo Coupe
New Heart & Lungs as of 245,225km.
302 H.O Swapped.. Bolt ons.. Tremec 3550.. 4.10's.. 18's..
https://postimg.org/image/efv6lnn35/
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Matt S Offline
Posting Freak
#4
Yeah I think tip in throttle response stinks on this car too. My clutch foot is faster than the throttle response when trying to not roll backwards on a steep hill around here, often leading to a stalled car. I've tried fooling with my timing, base idle and all that. It helps a little. IMHO the VAM is the largest problem, I feel it snaps shut for a second on hard throttle making the problem worse. Dunno if I'm right but it sounded good to me !
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23027 Offline
Senior Member
#5
Sooo I got the part about maybe adjusting the timing and base idle..

I don't really get what you're saying though
87 Turbo Coupe
New Heart & Lungs as of 245,225km.
302 H.O Swapped.. Bolt ons.. Tremec 3550.. 4.10's.. 18's..
https://postimg.org/image/efv6lnn35/
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Matt S Offline
Posting Freak
#6
That it stinks Big Grin IMHO even after trying some tweaks. It is what it is.

You can't really compare it to a small motor that can be wound up like your Suzuki either. You've got a lot more mass to spin up when you tap the throttle on your tbird.
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ipsd Offline
Member
#7
I had that sort of problem. I checked my TPS and it had worked loose and had set itself at .78volts. That wasn't any fun. I reset the TPS to .97v and all was well. Also as far as motors go our 2.3t's are a BIG block of 4 bangers!
84 T/c, 88 intake,I/C, injectors, hood, PC1 ecu, E6 manifold, Brown Tops, K$N open element, BPV. Way pay to run 8 cylinders when 4 plus a turbo will get you there quicker.
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23027 Offline
Senior Member
#8
This is true..

So how can I go about adjusting my TPS? Where and how would I be able to do this?
87 Turbo Coupe
New Heart & Lungs as of 245,225km.
302 H.O Swapped.. Bolt ons.. Tremec 3550.. 4.10's.. 18's..
https://postimg.org/image/efv6lnn35/
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gadgetolds Offline
Posting Freak
#9
Quote:Originally posted by 23027:
This is true..

So how can I go about adjusting my TPS? Where and how would I be able to do this?
Try this from the faq:

http://www.turbotbird.com/FAQpage/FAQpag...Adjustment
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.
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zip Offline
Member
#10
Here you go

http://www.turbotbird.com/techinfo/Idle-...e2005.html

There is a lot of useful information in the TC Faq and Tech Articles sections. You can find a links at the top of the page.
Matt
86 TC 5spd:QH/SD,Walbro190,CFI 52#, AFPR,WB,FMIC,3"dp to axle, .63 T3, E6,Stock Longblock.
Shelf:N/A 2.3, Die grinder, Carbide Burrs.
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