Ask a Question
or
Create a Poll
  1. Home /
  2. Questions /
  3. Autos & Motorcycles
  4. / 4x4 Cars And Trucks
  5. / 4x4 Car And Truck Information

by jfvilla on July 10th, 2008

jfvilla

Question

Help answer this question below.

I have a 88 chevy 350 TBI that ildes too high, i put a edelbrock performer intake on and set the timing to zero but it idles at 1400 rpm, which it turn makes it hard to start. i tried at 4 ATDC but it only lowered it to 1200 rmp and it ran bad. help?

Share:
Other

Answers. 3 helpful answers below.

  • by rustle on July 10th, 2008

    rustle

    if it did not idle high before there must be an intake
    leak at the head/manifold gasket

    No comments. Post one | Permalink

  • by Moosemose on July 10th, 2008

    Moosemose

    U will have to Re-Set the Timing (follow the Basic Timing Procedures) back (to I think it's 4 BTDC?) then check to see that "Throttle Plate" actually "Closes" fully when adjusted out fully. Now start & see how far the "Throttle Plate" "Opens" & how fast it is running there. If there is no "Sticking" & speed is still not right, spray some WD-40 around looking for "Leaks" causing the high Idle. I'm not sure changing the EPROM will have an effect on this unless it's just plain BAD as I've never seen published "Idle Specs." for this. But I sure could be wrong. I do know that U definantly have to follow a SPECIFIC procedure for setting the "Basic Timing" & it's different from car to car. Good Luck. John

    No comments. Post one | Permalink

  • by hartdaniel on July 10th, 2008

    hartdaniel

    You will likely need to change the EPROMM to a performance module.

    No comments. Post one | Permalink

Want to attach an image to your answer? Click here.

Did this answer your question? If not, then ask a new question or create a poll.

More Questions. Additional questions in this category.

You're reading I have a 88 chevy 350 TBI that ildes too high, i put a edelbrock performer intake on and set the timing to zero but it idles at 1400 rpm, which it turn makes it hard to start. i tried at 4 ATDC but it only lowered it to 1200 rmp and it ran bad. help?

Follow us on Facebook!

Related Ads

Related Questions

Professionally Researched

ANSWERBAG BUZZ

88 chevy 350 tbi idles to high
350 tbi high idle
Chevy 350 tbi timing
Tbi 350 high idle
Chevy 350 tbi

Answerbag

a Demand Media company