|
|
|
89 3.0 toyota truck idle issues
|
|
|
| |
|
|
justtoold
New User
Aug 16, 2012, 4:21 PM
Post #1 of 9
(2955 views)
|
|
89 3.0 toyota truck idle issues
|
Sign In
|
|
I have a 89 1 ton Toyota truck 240000 mi just tuned up ,had 1 injector and fuel pump replaced ,but when you stop with foot on the brake the idle surges up and down until you let off the brake,but at times it idles OK.
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Aug 16, 2012, 4:28 PM
Post #2 of 9
(2931 views)
|
|
Re: 89 3.0 toyota truck idle issues
|
Sign In
|
|
You may have a vacuum leak in the brake booster. Try pinching off the hose and see if the problem stops.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
justtoold
New User
Aug 17, 2012, 3:54 PM
Post #3 of 9
(2862 views)
|
|
Re: 89 3.0 toyota truck idle issues
|
Sign In
|
|
thanks, I've tried that, still surges.
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Aug 17, 2012, 4:01 PM
Post #4 of 9
(2859 views)
|
|
Re: 89 3.0 toyota truck idle issues
|
Sign In
|
|
That's the only thing with any relationship to the brakes.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
Tom Greenleaf
Ultimate Carjunky
/ Moderator
Aug 17, 2012, 4:34 PM
Post #5 of 9
(2852 views)
|
|
Re: 89 3.0 toyota truck idle issues
|
Sign In
|
|
Hose itself could be leaking. Take it off and plug it at engine and bet the idle issues disappear,
T
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Aug 17, 2012, 4:36 PM
Post #6 of 9
(2848 views)
|
|
Re: 89 3.0 toyota truck idle issues
|
Sign In
|
|
Yes, but that wouldn't be triggered by stepping on the brake.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
Tom Greenleaf
Ultimate Carjunky
/ Moderator
Aug 17, 2012, 4:41 PM
Post #7 of 9
(2844 views)
|
|
Re: 89 3.0 toyota truck idle issues
|
Sign In
|
|
Right - that wouldn't be just when hitting brakes - sorry to mislead on that. If pinched that may not have shut it tight enough for that test. Kinda has to be booster related or somehow something goofy with the check valve right at it,
T
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Aug 17, 2012, 4:43 PM
Post #8 of 9
(2838 views)
|
|
Re: 89 3.0 toyota truck idle issues
|
Sign In
|
|
Unless the brake lights are shorting something out but I don't see the connection there either.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
Discretesignals
Ultimate Carjunky
/ Moderator
Aug 17, 2012, 5:06 PM
Post #9 of 9
(2834 views)
|
|
Re: 89 3.0 toyota truck idle issues
|
Sign In
|
|
It is also possible that there is a vacuum leak somewhere other than the booster and when you step on the brakes that much more vacuum is being used by the booster to induce an idle surge. There are a bunch of vacuum lines on the passenger side of the intake that could easily be mis positioned or not plugged in.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
|
|
| |
|
Auto Repair Home
SEARCH
WHO'S 
LOG 
1989 toyota pickup 3.0 crank no start
Please Help - Knock sound & engine fail
