Engine hesitation while idling
Thread Starter
Joined: Nov 2010
Posts: 452
Likes: 7
From: Raleigh NC
Ok so i got home and readjusted/tightened my throttle cable. Definite improvement in throttle performance, but as expected, did not fix my problem. Still doing a random cough at stop lights when im there for more then 5 seconds or so. And i think its doing it more often now.
What is a good way to test the TPS without buying a whole new TB?
What is a good way to test the TPS without buying a whole new TB?
Thread Starter
Joined: Nov 2010
Posts: 452
Likes: 7
From: Raleigh NC
I will need to search for the thread again. It is simple, look under the throttle body and there is a set screw that determines the resting location of the throttle. Loosen the jam nut and move the screw up until you have the throttle right where you want it. Tighten the jam nut and you are set.
Are you saying there is another adjustment under the TB? Or are we talking about the same thing?
Registered User
Joined: Feb 2008
Posts: 1,911
Likes: 0
From: LaVista, NE
that might be the problem...when i was getting that my car would act horrible. after trying everything i gave up. couple weeks later a CEL popped up for the cat. bought a test pipe and viola!! runs much smoother and hesitation went away. not only that but i can also be bad gas. i used to get 93 from exxon and i experimented and got 91 from on base and it just got rid of any hesitation during running and any cold starts...
Thread Starter
Joined: Nov 2010
Posts: 452
Likes: 7
From: Raleigh NC
that might be the problem...when i was getting that my car would act horrible. after trying everything i gave up. couple weeks later a CEL popped up for the cat. bought a test pipe and viola!! runs much smoother and hesitation went away. not only that but i can also be bad gas. i used to get 93 from exxon and i experimented and got 91 from on base and it just got rid of any hesitation during running and any cold starts...
Registered User
Joined: Jan 2007
Posts: 992
Likes: 10
Two different adjustments. The cable adjustment will only give you a little better throttle response.
Look under the TB just in front of the intake side
There is a set screw with a jam nut under the throttle valve, Loosen the jam nut
Rotate the set screw up, or unitl you hear an increase in rev's
Manually twist the throttle under the hood to let it accuate and settle as if you pressed the pedal and let off
If it still bogs when the throttle settles, move the set screw higher
Repeat these steps until you find the sweet spot so your RPM are not too high but your bog is gone when the throttle drops
Tighten the jam nut once you have no bog and minimal increase in rpm.
Mine is just under 1K,
Look under the TB just in front of the intake side
There is a set screw with a jam nut under the throttle valve, Loosen the jam nut
Rotate the set screw up, or unitl you hear an increase in rev's
Manually twist the throttle under the hood to let it accuate and settle as if you pressed the pedal and let off
If it still bogs when the throttle settles, move the set screw higher
Repeat these steps until you find the sweet spot so your RPM are not too high but your bog is gone when the throttle drops
Tighten the jam nut once you have no bog and minimal increase in rpm.
Mine is just under 1K,
Registered User
Joined: Mar 2011
Posts: 137
Likes: 0
From: Fort Myers, Fl
Two different adjustments. The cable adjustment will only give you a little better throttle response.
Look under the TB just in front of the intake side
There is a set screw with a jam nut under the throttle valve, Loosen the jam nut
Rotate the set screw up, or unitl you hear an increase in rev's
Manually twist the throttle under the hood to let it accuate and settle as if you pressed the pedal and let off
If it still bogs when the throttle settles, move the set screw higher
Repeat these steps until you find the sweet spot so your RPM are not too high but your bog is gone when the throttle drops
Tighten the jam nut once you have no bog and minimal increase in rpm.
Mine is just under 1K,
Look under the TB just in front of the intake side
There is a set screw with a jam nut under the throttle valve, Loosen the jam nut
Rotate the set screw up, or unitl you hear an increase in rev's
Manually twist the throttle under the hood to let it accuate and settle as if you pressed the pedal and let off
If it still bogs when the throttle settles, move the set screw higher
Repeat these steps until you find the sweet spot so your RPM are not too high but your bog is gone when the throttle drops
Tighten the jam nut once you have no bog and minimal increase in rpm.
Mine is just under 1K,
Thread Starter
Joined: Nov 2010
Posts: 452
Likes: 7
From: Raleigh NC
Originally Posted by HS2K007' timestamp='1301524707' post='20413604
Two different adjustments. The cable adjustment will only give you a little better throttle response.
Look under the TB just in front of the intake side
There is a set screw with a jam nut under the throttle valve, Loosen the jam nut
Rotate the set screw up, or unitl you hear an increase in rev's
Manually twist the throttle under the hood to let it accuate and settle as if you pressed the pedal and let off
If it still bogs when the throttle settles, move the set screw higher
Repeat these steps until you find the sweet spot so your RPM are not too high but your bog is gone when the throttle drops
Tighten the jam nut once you have no bog and minimal increase in rpm.
Mine is just under 1K,
Look under the TB just in front of the intake side
There is a set screw with a jam nut under the throttle valve, Loosen the jam nut
Rotate the set screw up, or unitl you hear an increase in rev's
Manually twist the throttle under the hood to let it accuate and settle as if you pressed the pedal and let off
If it still bogs when the throttle settles, move the set screw higher
Repeat these steps until you find the sweet spot so your RPM are not too high but your bog is gone when the throttle drops
Tighten the jam nut once you have no bog and minimal increase in rpm.
Mine is just under 1K,
Registered User
Joined: Mar 2011
Posts: 82
Likes: 0
Originally Posted by MasterForce' timestamp='1301508844' post='20412356
that might be the problem...when i was getting that my car would act horrible. after trying everything i gave up. couple weeks later a CEL popped up for the cat. bought a test pipe and viola!! runs much smoother and hesitation went away. not only that but i can also be bad gas. i used to get 93 from exxon and i experimented and got 91 from on base and it just got rid of any hesitation during running and any cold starts...
happy