Question about 1991 Toyota Pickup

1 Answer

91 toyota pickup 4cl idles rough when warm when brake is pressed

Just got a 91 4cl toyota pickup 4wd. After the engine warms up when I come to a stop with the brake depressed the engine idles rough, low surge then sudden drop in power with a mild shake.

Now if I let my foot off the break the roughness goes away and the idle speed goes up. Unfortunatly I dont have a tach, but it sounds in the 1500rpm range.

I assumed it was a leak in the vacuum system between the engine and master cylinder/brake boster and replaced those hoses, but with no luck. After replacing the hoses the problem is less pronounced but still exists.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 6,784 Answers

HI, i would advise to check the following areas for faults. replace any part that is fouled or malfunctioning.

1. Check the air filter- This device may be clogged or dirty. replace if visibly fouled.
2. Check the fuel pressure regulator- pull the vacuum hose of the regulator. if there is gas in it, replace the fuel pressure regulator.(if there is no fuel present in the lines, move on to the next check point)
3. Replace the fuel filter and, check the voltage at th fuel pump. you should get 12V at the pump. if its lower than twelve, chekc the ground for corrosion as well as the entire wiring harness as well. all the way to the relay for fualts.
4. Check the Intake Manifold Gasket for worn or damged edges. this ware and tare will cuase leakge. replace this gasket if found to be fouled in any way.
5. Check the freash air intake hose. this hose may be clogged or damaged.
6. Last but not least, check the injectors for leaking seals and, correct pulse as well. replace any injector with a weak pulse or , leaky seal.


Posted on Jul 19, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

What is the factory Idle rpm for 22re efi engine


I've seen from 500 to 1500 RPM in all the manuals I've been through, depending on the year and application (truck/car). In personal experience, 650-800 RPM is acceptable warm operation range. This will also depend on elevation. Will go up to 1200-1500 RPM for cold starting. I live at about 2000ft and my '86 Pickup 22RE idles at 725-750 like a top after about a 3-4 min warm up @ 1250 RPM if it's cold (<45ish).

May 08, 2014 | 1986 Toyota Pickup 4WD

1 Answer

1993 gmc sierra 4wd runs rough after engine warms up.At stop lights she will stall out if i dont keep foot on break and give a little gas. any suggestions ?


Question, does this pickup blow black smoke on idle or at a stop sign. If so check your map sensor might be plugged up or unplugged or bad.

Mar 05, 2014 | 1993 GMC Sierra K1500

1 Answer

Engene dies when is started


It can be issue with fuel pressure,its low or the problem relates to faulty spark plugs.
There are few troubleshooting steps to confirm the problem.I suggest you few help links,with complete troubleshooting and solution for these types of issues.

1991 Toyota Trecel: Engine Starts fine but dies when gets Warm? http://whatisbyme.blogspot.in/2012/05/1991-toyota-trecel-engine-starts-fine.html

-----------
1994 Toyota Pickup: Starts fine but dies in few seconds?


http://howtobyme.blogspot.in/2012/05/1994-toyota-pickup-starts-fine-but-dies.html

-----------
1994 Lexus ES300: Engine Idles Rough and Dies? http://whatisbyme.blogspot.in/2012/05/1994-lexus-es300-engine-idles-rough-and.html

-----------
Stalls And Dies At Stop Sign? http://www.howtobyme.blogspot.com/2012/07/stalls-and-dies-at-stop-sign.html

-----------
Car dies when gas pedal is pressed? http://schematicsdiagram.blogspot.com/2011/12/car-dies-when-gas-pedal-is-pressed.html

----------
These help links will help you to troubleshoot and solve the issue.
Thanks.

Oct 21, 2012 | Cars & Trucks

2 Answers

I have 94 toyota pickup 22re engine,starts fine underpower is fine,when it is warm it will idle so low that it will stall unless i give it gas at lights and stop signs offramps


Here's a brief video on idle adjustment:
http://www.youtube.com/watch?v=aXzDZSNSHJE
If the slow idle is a recent change ... then of course you
need to find the problem.

Apr 21, 2011 | 1994 Toyota Pickup

1 Answer

My 1989 22re idle surges when warmed up and brake pedal applied. let off the brake it stops surging


Check the vacuum hose from the engine to the power brake vacuum reservoir, it make be loose or cracked and will cause an erratic idle because of the vacuum leak. Please rate this answer, thanks.

Feb 03, 2011 | 1989 Toyota Pickup SR5

1 Answer

1998 dodge ram pickup 318 eng. engine idle rough on warm-up engine idle rough after warm-up shutting off engine and starting back up engine also runs sluggish in over drive at a low idle. I have...


If the engine seems to run fine over 1450 RPM maybe there is a vacuum hose leaking or EGR valve is slightly stuck open. Any help from the OBD II trouble codes? Or is there simply no MIL and no stored information in the OBD II computer read at the local parts store through the connector by the drivers knee?

Dec 04, 2009 | 1998 Dodge Ram 1500 4WD

1 Answer

`91 Nissan D21 4 cyl MT Pickup won't idle when cold


sounds like the clutch isnt engaging properly in the situations you described. may need to check fluid levels if there ok. then may need to get serviced or checked at least

Mar 20, 2009 | 1991 Nissan Pickup

2 Answers

1992 4x4 toyota does not idle.


After it dies, then you restart, does it run fine for about 30 sec, and then go to ****?

Feb 28, 2009 | 1986 Toyota Pickup 4WD

2 Answers

Idle surges after warm up and when brake pedal is pressed


1990 22re same problem surge when pedal was depressed thought it was booster or check valve still didnt fix it i even put a brand new booster on it just to make sure still no fix it finnally went away on its own for about a month now it does it just sitting at an idle with out the brake pedal depressed traced all vaccum lines no problem there and still have no clue

Jan 19, 2009 | 1991 Toyota Pickup

Not finding what you are looking for?
1991 Toyota Pickup Logo

963 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

76682 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8531 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...