Question Asked: Engine runs rough.
January 12, 2013, 02:07 PM
Today I went over a friends house to check out her car. When I tried to start the car it only continued to crank but no start. Sounds like a normal crank. I checked and verified there is good spark. Fuel pump is running. This leads to my first question. Is there and where is the test port to check fuel pressure? I didn't see anything under hood. I finally got the car started after cranking it four times for about 30 seconds each time. It ran rough and died out. It did this two times then I gave it gas to keep it running. When you press the gas above 3,000 RPM the engine runs smoothly and when you stop pressing the gas it runs rough for about 7 seconds then dies out. Checked for codes with aftermarket scanner and had P0301 Cylinder 1 Misfire stored. Removed intake to access #1 cyl. then swaped coil from #1 cyl. to #6 cyl. and spark plug from #1 cyl. to #5 cyl. Put everything back together and erased codes. Vehicle started and ran rough. Scanned for codes and retrieved a P0306 Cylinder 6 Misfire. Simple enough I need a coil so I thought. Replaced coil in cyl. #6 which was originally in cyl. #1. Ran vehicle and it still runs rough as it did when I first got it started. Scanned for codes again: P0302, P0304, and P0301. Cylinder #1, #2, and #4 misfire. I disconnected cyl. #2 coil wiring and engine idle did not change. I disconnected cyl. #6 coil and engine ran rougher. There is a large hose that goes from the upper intake on right bank side to the lower intake at the rear of engine. Where it attaches to the upper intake it is a rubber elbow which collapses when the engine is running in open loop and closed loop. Checked the hose for blockage and found nothing. Reattached hose at lower intake and sucked on hose (yumm) and noticed no restriction. I was able to get it to not collapse by putting pliers around it and ran engine. Still runs rough but did not collapse. I think it collapses because the rubber is weak. I looked over repair pal's advice colomn and saw a couple places where people mention intake gaskets failing. I sparyed brake cleaner around intake and noticed no change in engine RPM then sparayed carb cleaner around intake and still notice no change in engine RPM. Do you think it's the intake gaskets? Any help would be appreciated and Thank You.
Question Answered: The push button on shifter wont go in when u put brake on. Where is the nuetral
November 22, 2014, 07:55 PM
The brake interlock system is not functioning properly. There will be a little hole to stick a screw driver into, carefully insert it into it to release the handle to shift. You don't need to push hard. You will feel it pushing back since there's a spring in it. The problem could be many things and it should be properly diagnosed by an auto mechanic.
Question Answered: Why the interior lights in the front and back will not turn off?
November 22, 2014, 07:47 PM
Sounds like one of your door switches are broke,interior lamps were turned on manually at switch, or there is a door still open. Be sure doors are closed and switch is off. If switch is off and doors are closed you can check the owners manual for interior lamp fuse and pull the fuse until you get the problem diagnosed.
Question Answered: I hear water in my dash
November 22, 2014, 07:04 PM
The noise you hear is the coolant flowing through the heater core. Your coolant is either low or there is air in the cooling system.
Question Answered: help please does any one know if the engine computer it has 3 will it stop jeep
March 16, 2014, 12:35 AM
My father in law had the same problem on his 2004. He noticeably had a bad camshaft position sensor. You can remove it and check if the what I believe is a magnet has fallen apart. As mentioned before save your money and get it diagnosed before replacing parts. Can't be sure but it's probably not the computer.
Question Answered: Check engine light came on with noticeable what I believe is fuel injector tick
March 16, 2014, 12:24 AM
If you believe the fuel injector is bad you can unplug one connector at a time from each injector. If there is a change in the idle or it runs worse/rough the injector you unplugged is a good injector. Plug each injector back in after checking it. If you have a bad injector the engine will not change idle when unplugged. Of coarse the engine must be on when checking these.
Question Answered: Braking problem
March 16, 2014, 12:16 AM
Im 99.9% sure there is rust built up between you spindle and speed sensor on the front wheels. You will need to remove the speed sensors and clean the rust off. If you have access to an OBDII computer you can check which sensor is at fault. There is a recall that covers some of these trucks where they will clean off the spindles and replace the sensors if necessary. It is very unlikely you will be able to remove the sensors without breaking them. I myself bought the sensors then performed the repair. Good thing since the sensors feel apart.
Problem Reported: Transmission Pressure Control Solenoid Failure May Cause Erratic Shifting
September 15, 2010, 10:08 PM
<p>The <a id="ce_155" class="ct_glossary tooltip" href="/automatic-transaxle">transmission</a> pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.</p>