changed timing belt on friends 2.0l 4 cyl.never drove car myself so i dont know how it was running before hand.had codes 300-301-171-1380 prior to my repair.belt was off gears and shreaded.ran good after repair for a short time but now has a bad miss at all rpm ranges.replaced plugs and tested wires - all ok (under 7 ohms)now i have the same codes up again after i reset them.any ideas?
rough running on 1999 Mercury Mystique
by shadetreeauto in Turlock, CA on November 25, 2010
1 answer 1 comment
ANSWER by DaveJHM on November 25, 2010
P0300 and P0301 means - random misfire and cylinder one misfire. P0171 indicates lean with bank one oxygen sensor. P1380 is the key - it means: P1380 - Variable Cam Timing Solenoid A Circuit Malfunction. You likely have an issue with the VCT solenoid (not unusual with this model). The solenoid could require replacement - and at least needs looked into. I'm also concerned that your misfire is still present - compression test may be in order if the codes reoccur folloiwng repairs. Good luck and Happy Thanksgiving!
COMMENT by shadetreeauto on November 26, 2010
thank you - i was afraid it was something in the VCT SYSTEM.
How do u time the crankshaft timing with the camshaft timing when changing the timing belt?I think mine is off because my engine idles rough.Want to change the belt but not sure how.Thanks
If you experience difficulty starting the engine when cold, stalling at idle, or hesitations during acceleration, it may be the idle air bypass valve. This valve helps the vehicle idle steady when ...
car has 102,000 plus miles and an automatic trans. any time i drive at speeds over 40 the engine rpm falls aprox 200-300 rpm momentarily and then goes back to where it was. it happens every 10 seco...
it do it all the time
today i put the old one in and the car didnt stall but check engine light came on with the new mass air sensor the check engine was off what would the car to run rough