Timing belt, spark plugs, spark plug wires switched on the cap, spark plug wires could be worn out,crack in the rotor or cap. Always start at the cheaper fix and work your way up. the timing belt is more time and money but not a hard job.
Testimonial: "I've done all that except the timing belt. everyone i ask says do the timing but I've never done it and don't wanna spend an arm and a leg for someone to do it."
It sounds like you might be out of time, how long has it been since the timing belt was changed?
Testimonial: "No clue lol I've had the car for a year and haven't changed it. How often should it be changed? Do I have to time it after changing the belt?"
You will have to make sure that the engine is in time when you install the new belt. It sounds like you have jumped a few teeth and the engine is out of time right now. You DO NOT want to keep driving the vehicle this way! If the belt comes apart all together or the engine jumps time enough, the valves and the pistons can come in contact with each other and this will bend the valves causing a lot more cost than just changing the belt. Get yourself a manual for the vehicle and it should guide you through the process of changing the belt and setting the timing marks on the cams and crank.
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SOURCE: i have 1995 Mits Lancer glxi matic. I observed
Try checking the codes. You can do this at part stores like auto zone for free. It might be the maf sensor or if it says lean o2 sensor than it's the fuel filter.
SOURCE: Involved vehicle: 1999 Saturn SL - 4 cyl, 5 speed
try to reset the computer if that doesnt work reset the idle speed it may have picked up bad codes
SOURCE: 1997 Hyundai Elantra codes P1128,
Hi, the trouble codes P1128, P0455 and P0707 is a summary of all the problems your are currently experiencing with the car and each code will be explained in details below...
P0455 This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
Other leak or damaged piece in EVAP system
P0707 The park/neutral position (PNP) switch includes a transmission range switch. The transmission range switch detects the selector lever position when the shift lever is in the N or P shift position and sends a signal to the Transmission Control Module (TCM).
- Open or short park/neutral position switch circuit
- Poor park/neutral position switch circuit connection
- Misadjusted park/neutral position switch
- Park/neutral position switch may be faulty
Code P1128 is a lean condition code. The engine computer may be reducing boost to protect itself. Assuming the parts you have replaced are in good working condition I would check the fuel pressure (pump failing?) check the oxygen sensors (switching throughout full range?) and check the operation of the fuel injectors (not spraying correctly).
SOURCE: i have a 2001 eclipse
first check for vacuum leaks, then check idle air control valve.
Please see my tip at http://www.fixya.com/cars/r7427423-fix_poor_idle_high_idle_stalling_fuel . These are generic instructions. If you getstuck or need specific instructions for your car, please get back to me with model, year and engine info.
SOURCE: 2000 pontiac grand am 3.4
Hi Tom,Did you ever figure out what the problem was? My Alero with the same 3.4 motor is doing the exact same thing between 3000-4000 rpm while driving sometimes. Mine won't rev in park over 4000 either, but I think they are all like this.
Thanks,
Mitchell
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I've done all that except the timing belt. everyone i ask says do the timing but I've never done it and don't wanna spend an arm and a leg for someone to do it.
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