Question about 1998 Toyota Corolla

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2.2 3sfe runs fine with light load,thrash it abit and eng starts missing.injectors and spark turning off and on together.code 14 comes up

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How to pute engine computer

Posted on Jul 29, 2008

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Please check engine computer (ECU)

Posted on Jul 15, 2008

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How can I be sure if my PCM is bad???


I would try disconnecting battery again. Disconnect both cables and touch them together for a few seconds. This will reset all modules. Wierd that you had so many codes after just disconnecting battery. Sometimes very hard to tell if ecm is bad.

Dec 01, 2014 | 2006 Pontiac Torrent

1 Answer

I have a 2008 chevy hhr, starts fine and idles


Have you replaced the spark plugs or coil packs? A lot of times spark plugs will only miss once a load is put on them. Here are some tips to help you narrow it down. All you need is a screw driver and a code reader.
First, is your check engine light on?

----> if yes, try to get the code it is throwing

is the code current?

----> if no
1. Pop the hood
2. Remove the air filter box cover and inspect the filter
---> is the air filter clean?
If no, replace the air filter
If yes, remove the engine cover -

3. Find the fuel rail located toward the back of the engine bay and find all 4 injectors.
Place your thumb over the end of a long flat blade screw driver, place it carefully on each injector, and place your thumb on your ear. With the engine running, listen for fires from the injector
-----> are all 4 injectors firing rapidly at the same rate?
----> if yes, start with replacing all 4 spark plugs
----> if no, replace the fuel injector that is not firing

If yes ---> is the code for an engine misfire?

See above instructions

if no ----> is the code for throttle body position?

if yes ---> Replace the throttle body position sensor and perform the relearn process via tech II scan tool.

These are the most common issues with misfiring with engines, hope it helps or leads you in the right direction.

Oct 01, 2014 | 2008 Chevrolet Hhr

2 Answers

I have a 2000 ranger and i keep getting a code of p301. I have replaced both coils,wires,fuel filter,spark plugs,did compression test(fine). In the morning it idles rough and sometimes dies at stop signs...


Hey Troy code 301 is cylinder # 1 miss fire, I know you know that, but have you check your fuel injector, that what is sound like to me, of corse me not beening there would be my best guess, look's like you have checked every thing else, good luck.

May 20, 2010 | Ford Ranger Cars & Trucks

1 Answer

1987 toyota corolla 3dr hatchback with 1.6l DOHC 16v eng. Came in with a no start. have spark and check engine light is on with key and get a code 6. TPS all checks out good. Checked wires from distributor...


A code 6 is an RPM missing signal. Your distributor coil circuit is open (or could be the coil).Check continuity with a volt meter.Check the blue/yel wire and the white one for cracks or broken,and if possible trace them to the computer for continuity. This malfuntion is a code 6 BUT car should start even so. Now to the injectors:check pulsating ground from computer,if not check wiring,if they are OK,try another computer.

Jan 26, 2010 | 1987 Toyota Corolla 2 Door

1 Answer

91 LEGACY STARTED RUNNING ROUGH


The cylinders are numbered as on the spark pack you changed. You might have done better putting the seafoam in the tank as an injector cleaner. Not sure why you changed so many parts, you seem to know how to get the codes from test connector lead hookup and the blink pattern. You might also want to check the fuel rail pressure and the crank and cam angle sensors. Before replacing the injector, swap the #4 injector with the adjacent one and see it the code moves with the injector or stays put. If the code stays on #4, then check the injector wiring, if it moves clean or replace the injector.

Mar 16, 2009 | 1991 Subaru Legacy

2 Answers

2003 merc. mountaineer with v-8, has a miss, service eng. light o


Check to see if your overflow tube againt the fire wall on passenger side is not leaking onto cylinder 4. Pull spark plug boot and make sure it is dry. When the heater core starts going bad it will leak out over flow right there

Jan 15, 2009 | 2003 Mercury Mountaineer

1 Answer

98Eclipse 2.0 nonTurbo 5speed 180,000 miles ,code PO301


The po301 is a misfire code. The backfire can be caused by a excessive amount of fuel, bad valve timing etc.
My guess is you have damage to an exhaust valve that may have occurred when you had the timing belt problem.A compression test will indicate if you have a leaking exhaust valve.The reason for the backfire is the exhaust valve is still partially open when the spark plug fires.

Jan 03, 2009 | 1998 Mitsubishi Eclipse

1 Answer

My jeep won't start right away ?


Check body and dash grounds. Pressure test injector rail. You may have either a partially plugged fuel filter or low capacity pump.

Oct 23, 2008 | 1994 Jeep Grand Cherokee

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