When runing engine has missfire on #1 and#7 cly At ilder or highway speed some time it run with no probem but back fire throw intake and set codes.

Question 1

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1answer

P1346 2002 Camry 4 Cly

I look up your code. Meaning of code is vvt sensor range/performance problem bank 1

possible causes
faulty variable valve timing vvt sensor
variable valve timing sensor harness is open or shorted
variable valve timing sensor circuit poor electrical connection
engine control module

Jun 18, 2017 • 2002 Toyota Camry

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1answer

Lacks power in highway hills

Hi,

I am assuming that you have no issues with the engine whatsoever, then the only possible areas to check would be:
1. axle gear ratio - to my knowledge a Wrangler would be 4.11 while some Cherokees could be anywhere from 3.54-4.88;
2. flywheel - a lighter flywheel could cause the engine to loose easily its momentum hence difficulty on an a rise.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

May 25, 2008 • 1997 Jeep Wrangler

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2answers

How do i fix my missfire on my blazer. i have gone trough the injection and wires and everything..

check your timing

Jul 09, 2015 • Cars & Trucks

2helpful

2answers

P0300 code

sounds like you have checked a lot of things if it was mine I would do new intake gaskets, I had a 2002 Sonoma I did a lot of what you did and every time I gave it back to owner a few days later lite was on and p0300 I did intake gaskets and its been good 2 yrs now,not sure what gaskets you got but gm use plastic ones I got new gm ones and they were aluminum type call gm dealer parts good luck

Mar 05, 2015 • 2005 GMC Sierra 2500HD 4WD

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2answers

Missfire from cly 1 on my pick up truck checked spark wires cap and rotor all new still getting a code of miss fire

did you ever have the codes cleared after putting all the new items in ? if not do that ,, then ask them to check the codes again, also,, pull the plug I noticed that you did the wires and cap and rotor , be sure the gap is set right and the plug isn't fouled

Aug 27, 2011 • GMC Sierra 1500 Cars & Trucks

4helpful

2answers

Have a 97 Blazer. It started to miss fire so I gave a tune up cap,rotor,wires,plugs and fuel filter.It still had a missfire so I took it to a shop and they said I had a bad injector. I replaced the spider...

Check the compression on that cylinder,and the valve springs on that cylinder,it is most likely that problem,or,a crack in the intake,on number two,They will crack under the intake on that cylinder in the oil valley.If this was at all helpful,please rate,and thank you.

Jul 18, 2010 • 1997 Chevrolet Blazer

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1answer

Check eng.light on mis fires around town but not on highway had new plugs ,wires fuel injectors cleaned,new coil pack. ect. no one knows the problem,missfires on two cyl,

Your EGR valve appears to be leaking. The valve is most likly dirty or sticking causing the exhaust gasses to enter the intake manifold and causing the missfire. At highway speeds is when the exhaust gas is allowed in the engines intake system for combustion chamber cooling and emissions purposes.
I would suggest removing the EGR, cleaning the valve and have the valve checked.
Good luck.

Dec 02, 2009 • 1996 Ford Windstar

3helpful

2answers

98 ford expidition 4.6 codes current po171 po174 and has po304 and po308 veh idles little rough repaire vaccumat rear of throttle body,is this a lower plenium leak veh has 177,00 mileson it

hi guess your engine has lack of power also a rough tick over ?your codes tell me you are running lean on bank 1and2 this can be due to many things its a matter of checking of one at a time 1 a bad coolant temp sensor 2vacuum leak 3 dirty injectors also reach over the top of your engine behind the intake dead centre of the windscreen there is a 9odeg rubber elbox check for a hole if thats your problem its only 3usd good luck please rate this answer thanks pete

Nov 27, 2009 • 1998 Ford Expedition

0helpful

2answers

Will not start after it stalls untill about 5-10 minutes

spray carb cleaner on the intake manifold near cylinder 1... common problem is the intake manifold gasket leaks vacuum causing a misfire...the not starting could be due to a faulty crank sensor

Feb 27, 2009 • 2002 Saturn Sl

1helpful

2answers

Need to know firing order

6 cly firing order is 1-5-3-6-2-4
8 Cyl firing order is 1-8-4-3-6-5-7-2
4 cly firing order is 1-3-2-4

Oct 30, 2008 • 1986 Jeep Comanche

Question 2

ZJ Limited

Dodge Master 17,989 Answers
Posted on Oct 31, 2011

ZJ Limited

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DTC P0301 & P0307 Code - Cylinder #1 & #7 Misfire Detected
A P0301 (also P0307) code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #1 (also cyl #7).

Symptoms may include the engine may be harder to start, the engine may stumble / stumble, and/or hesitate or other symptoms may also be present. Other tips to solve it in the previous fault code link.

A code P0301 and P0307 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa.

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When runing engine has missfire on #1 and#7 cly At ilder or highway speed some time it run with no probem but back fire throw intake and set codes.

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ZJ Limited

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P1346 2002 Camry 4 Cly

Lacks power in highway hills

How do i fix my missfire on my blazer. i have gone trough the injection and wires and everything..

P0300 code

Missfire from cly 1 on my pick up truck checked spark wires cap and rotor all new still getting a code of miss fire

Have a 97 Blazer. It started to miss fire so I gave a tune up cap,rotor,wires,plugs and fuel filter.It still had a missfire so I took it to a shop and they said I had a bad injector. I replaced the spider...

Check eng.light on mis fires around town but not on highway had new plugs ,wires fuel injectors cleaned,new coil pack. ect. no one knows the problem,missfires on two cyl,

98 ford expidition 4.6 codes current po171 po174 and has po304 and po308 veh idles little rough repaire vaccumat rear of throttle body,is this a lower plenium leak veh has 177,00 mileson it

Will not start after it stalls untill about 5-10 minutes

Need to know firing order

Not finding what you are looking for?

1999 Ram

P1346 2002 Camry 4 Cly

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When runing engine has missfire on #1 and#7 cly At ilder or highway speed some time it run with no probem but back fire throw intake and set codes.

1 Answer

ZJ Limited

Add Your Answer

Attachments: Added items

Related Questions:

P1346 2002 Camry 4 Cly

Lacks power in highway hills

How do i fix my missfire on my blazer. i have gone trough the injection and wires and everything..

P0300 code

Missfire from cly 1 on my pick up truck checked spark wires cap and rotor all new still getting a code of miss fire

Have a 97 Blazer. It started to miss fire so I gave a tune up cap,rotor,wires,plugs and fuel filter.It still had a missfire so I took it to a shop and they said I had a bad injector. I replaced the spider...

Check eng.light on mis fires around town but not on highway had new plugs ,wires fuel injectors cleaned,new coil pack. ect. no one knows the problem,missfires on two cyl,

98 ford expidition 4.6 codes current po171 po174 and has po304 and po308 veh idles little rough repaire vaccumat rear of throttle body,is this a lower plenium leak veh has 177,00 mileson it

Will not start after it stalls untill about 5-10 minutes

Need to know firing order

Not finding what you are looking for?

1999 Ram

P1346 2002 Camry 4 Cly

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