Question about Chevrolet Suburban 1500

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I have a 1993 Suburban that hesitates under acceleration when it reaches operating temp. It almost feeling like it is missing or running rich. I have replaced virtually the entire fuel system, EGR valve, plugs, wires, cap and rotor and rebuilt the fuel regulator. ???? Could it be the coil?

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Yes a coil could cause your problem . on the dist dose it have a vacuumn advances unit? if it dose take volt ohm meter and hook it up in series with the pick up coil take a hand vacuumn pump and pump 14 inches your ohm meter should be 1000x scale your reading should 900 to 800 ohms steady . now crank the mtr over if there any change by more than a 100 ohms i would look at the pick up coil pull the dist see how much play you have good luck kdc744

Posted on Jan 19, 2009

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I know this sounds off the wall But, Try it. Replace your Fuel Cap. It sounds like you are sucking air into the Fuel tank. This will cause it too miss Everytime.

Posted on Jan 19, 2009

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My truck is a 95 chevy silverado 1500 it cuts off in 1st gear


Does it seem like when the engine is cold it runs ok, then when it reaches operating temp. it starts acting up? (poor acceleration, stalling) When I had that problem w/ my 93 K1500, it ended up being my oxygen sensor. (causing too rich of a mixture in the throttle body)
Hope this helps, Good luck

Mar 19, 2014 | 1993 Chevrolet K1500

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Engine balks and quits after reaching normal operating temp.


sounds like a fuel problem , water in gas , ......

Mar 09, 2010 | 1993 Chevrolet K1500

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My 93 plym voyager, 3.0 has a hesitation when


if your having cold engine start hesitation,you need to check the engine temp switch,it tells the computer how cold it is,so the engine can adjust to a rich start and not a lean one.if the switch is faulty and the computer is being told it is 80degrees,you will not get a rich mixture like no choke at all

Dec 25, 2009 | 1993 Plymouth Voyager

1 Answer

Truck misses under acceleration after it's warmed up.


that is a tricky one you have almost replaced everything. that is fuel injected if you dont have the right fuel pressure when you step on the gas it will fall on its face you need to take a fuel pressure reading and also it could be as simple as the fuel filter which is often over looked it could be cloged restricting the flow. also check the MAP sensor

Paul
www.carburetorexchange.com

Sep 02, 2009 | 1989 GMC K1500

1 Answer

On a cold start my 2002 estate 2.4 gdi missfires.


Since you vehicle is 7 years old. The temperature is due for a change.

the temp sensor give the exact engine block temperature information to the computer (ECU).

An old sensor or sensor giving incorrect temp to the ECU will cause this problem.

The correct term is call close loop. When the engine at start up the computer will only count on the temp sensor to report temp.

When temp is reaching 195F,the mode change to open loop. All sensors comes into play and at the point the fuel inject will scale down for the warm up state.

Running rich condition can be cause by an old temp. sensor.

Change the sensor and the RICH condition after warm up will go away.



Aug 18, 2009 | 1999 Mitsubishi Galant

1 Answer

99 Suburban misses and hesitates on accelleration


most likely you have a bad spark plug wire have the codes checked at autozone ,they will do this for free!

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do u have a check engine light coming on? if not the plugs are not the problem a miss will trigger a check engine/service engine soon light, most likely you have a dirty automatic idle speed control motor.

May 11, 2009 | 1993 Oldsmobile Cutlass Supreme

1 Answer

Very bad idol and run condition.


sounds like a possible water temp issue... check your thermostat and/or water temp sensor. when you first start your engine the computer uses the water temp reading to do a 'cold start' scenario, more fuel. once you reach normal operating temp the fuel should be cut back. if the thermostat is not opening and closing properly this can cause strange readings from the water temp sensor (which is mounted near the thermostat)... unlikely the sensor is bad, but a possibility... more likely the thermostat.

Mar 23, 2009 | 1993 Ford F150 SuperCab

2 Answers

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Bad coil they breakdown when the engine get hot. There is 3 coils total when it starts missing start pulling plu wires until you find the one that is not firing

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1 Answer

Runs rich, loads up, hesitation


It could be several things but most of the time with these its a faulty EGR valve that causes the off idle sputter. You can take a piece of tin soda can and bolt it between the valve and intake. If the probelm goes away then the EGR valve is at fault.

Aug 17, 2008 | 1993 Chevrolet Suburban

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