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1992 Suburban I change the fuel pump, fuel filter, ICM, TBS and plugs, wires, distributor cap and rotor. It hesitates when acceleratin. Once I'm past 30mpg it runs okay. Only coming from a complete stop it hestitates when I hit the gas pedal.

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  • Cars & Trucks Master
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Did you test the throttle position sensor, check to see what the fuel pressure is, and is the check engine light on ?

Posted on Apr 23, 2013

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6ya6ya
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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: Hesitation problem

try cleaning the inside of the MAF sensor and do the following procedure as well.
Here is the most common cause of surges and stalls at stops and low erratic idle speed and rough idle, it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Mar 24, 2009

  • 6982 Answers

SOURCE: running rough, spark plugs, distributor cap, rotor

First thing you need to know is which cylinders are missing. Then, don't forget there is an engine beneath the electronics. Do a quick test with a vacuum gauge and do a compression test. Check the distributor shaft for side play. If everything checks out good, then do electronic component testing. have a code check run (many parts stores do this free) and get a chiltons or haynes manual and follow test procedures in there.
I refrain from giving repair suggestions with problems like yours because people keep changing instead of testing parts. When I work on my vehicles or other peoples cars, I do testing to avoid buying expensive parts that most times won't correct the problem. At this point the most I'd suggest is to clean the mass air flow sensor wires with a Q-tip and carb cleaner...that often helps and is free. If you run into a problem with whatever you find, ask and I'll try to help.
good luck

Posted on Oct 05, 2009

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roniecon
  • 6826 Answers

SOURCE: Somedays will idle, run and

Replace the pick up coil in the distributor,this is the problem.

Posted on Apr 23, 2010

SOURCE: 91 Sonoma 2.5 New plugs, wires, coil, distributor

Have you checked the injectors and wiring. sounds like bad injector or wiring not sending pulse from pc.

Posted on Nov 16, 2010

  • 1 Answer

SOURCE: hesitation during initial acceleration,also at

im having the same problem as you had with your truck, have you had any success with it, if you have could you let me know!!

Posted on Dec 14, 2010

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Have a 99 suburban. Changed spark plugs, distributor cap and rotor. Has new fuel lines and fuel tank. Keeps cutting out. What should I check now?


fuel cutting out problem is usually happened because fuel pump and fuel filter and loose relay and check wiring to fuel pump.

Sep 06, 2014 | Cars & Trucks

1 Answer

Have 99 suburban 5.7. Just had fuel pump,filter,distributor,cap and rotor, spark plugs and wires, control module and coil replaced a little over a year ago. Drove great until it just shut off recently...


You might check for a fuel shut off valve. Some vehicles have them in case of an accident, it turns off the fuel pump. Some are just a relay that can be reset.

Jul 13, 2014 | Cars & Trucks

1 Answer

I replaced the fuel pump, harness, filter, distributor ,cap ,rotor, and relay. my 96 chevy suburban still doesnt start. i dont hear the fuel pump motor but the relay is working. dont know what to do n


BYM, Back Yard Mechanic...You will need a Mechanics Manual...Chilton's, Haines, or OEM...Look thru the wiring diagrams, BEFORE you start dicing, and splicing...as far as your real problem...did you replace the Ignition Control Module, that is inside the Distributor cap??? It's Black, and has several wires that attach to it...those are the 1st thing you want to look at, before you start messing with the fuel delivery system, Buy A New ICM, or 2, and replace it, it's good to keep a spare around (in your vehicle). You will need a 7 mm socket, w/extension, and obviously, a driver of some sort, ratchet, or nut driver type. Good Luck.

Jul 18, 2012 | 1996 Chevrolet Suburban

1 Answer

I have a 1992 mazda 323 it starts after a while it dies i changed the fuel pump there was some white stuff in gas tank changed the fuel filter changed plugs wires distributer cap rotor checked MAS che


I'm glad you figured it out. However, the "white stuff in the tank" sounds like somebody might have put sugar in your gas tank. You should probably pull the tank down, drain it, and clean it out real good. Otherwise, you are likely to be taking your fuel rails and injectors apart again.

Jun 03, 2012 | Cars & Trucks

1 Answer

1992 ford f-150 cranks wont start


I believe that motor still uses a distributor cap, rotor, and seperate coil...it has to be no spark...inspect the cap and rotor for hairline cracks...remove the coil, (Connected to center wire on distributor cap) and have tested...Hope this helps.

Jun 01, 2012 | 1992 Ford F150 SuperCab

1 Answer

Have replaced the starter solenoid, spark plugs, plug wires, fuel filter, air filter, water pump and battery all within the last two months. When the truck gets hot it will not crank. Has electrical power,...


If you haven't already done so, replace the distributor cap and rotor. There is most likely corrosion inside the cap that is causing a crossfire condition.

This is a common problem on that engine.

Don't know why being hot would aggravate it, but start with the cap.

Jun 14, 2011 | 1990 Chevrolet Suburban

3 Answers

Hesitation & missing


distributor under the rotor and cap, if not the rotor and cap (or ignition pack-coil if its not cap and rotor.)

Aug 16, 2009 | 1993 Chevrolet Lumina

1 Answer

Engine hesitation


possibly bad distributor. did you see brown dust under the distributor cap? If yes, the bearing may be going (not replaceable) and blocking optical sensor in distributor.

go here too

http://autos.groups.yahoo.com/group/villagerquest/

Mar 24, 2009 | 2000 Nissan Quest

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