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Old 01-14-2012, 12:37 PM   #1
UsdmFocus
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My zx3 is growing more and more unreliable.

It seems like every other day something is causing this car not to run. First I have iac valve problems, I buy the valve and it goes away. Next the timing belt ( I know my fault for not replacing, but all the pulleys were pretty bad and they were replaced). Now this mysterious problem. So driving down the road 10 mins after warming my car up I see the revs hanging around 2 grand so I drive 1/4 mile down the road and every time I go to shift the revs drop instantly. Now first instinct was to pull it in somewhere and park so I did and I tried giving some gas, the car bogs and then jumps to 2 grand and stays there for 3 seconds and rolls down. I then turn the car off and try to restart it and who would have guessed it wont start. Call my dad to see what he thinks and he says its prob a fuel problem. I leave the car there for 3 hours while we had to go to hockey practice and come back, starts right up and I drive it home no problems. This morning go out start it same things going on and it wont start again. Are these cars really this unreliable?? Should I buy AAA hahaha like holy shit.


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Old 01-14-2012, 01:10 PM   #2
xxMichaelAnthony
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Not sure how many mile you have but from what I've seen, some cars will have a few things go wrong with them all at once just because its about that point where thing are worn out. My 01 has been extremely reliable. All I have has go wrong was the alternator go out and a blown head gasket along with the problem that come with that. I put a "new" motor in at 232,000 miles because the head gasket finally blew out completely after being blown for 70,000 miles. Yes it still drove amazing with a blown head gasket for 70,000!

To your problem. The bogging then jumping to 2,000 revs sounds like a bad throttle position sensor to me. It is normal for them the wear out within that range since that is where your foot is the most. If you have a multi meter you can test it. At closed throttle it should be a little less then 1 volt and should not be higher then 5 volts at wide open throttle. If the voltage dips down at any point thru the range its should be replaced.
The hanging revs are somewhat normal for our cars with manual transmissions. Not sure how long ago you did the IACV but the computer could still be learning the range of the new one still or its just be more noticeable to you now since it is new.
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Old 01-14-2012, 01:15 PM   #3
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Quote:
Originally Posted by xxMichaelAnthony View Post
Not sure how many mile you have but from what I've seen, some cars will have a few things go wrong with them all at once just because its about that point where thing are worn out. My 01 has been extremely reliable. All I have has go wrong was the alternator go out and a blown head gasket along with the problem that come with that. I put a "new" motor in at 232,000 miles because the head gasket finally blew out completely after being blown for 70,000 miles. Yes it still drove amazing with a blown head gasket for 70,000!

To your problem. The bogging then jumping to 2,000 revs sounds like a bad throttle position sensor to me. It is normal for them the wear out within that range since that is where your foot is the most. If you have a multi meter you can test it. At closed throttle it should be a little less then 1 volt and should not be higher then 5 volts at wide open throttle. If the voltage dips down at any point thru the range its not good.
Its got a little over 126k, and i'll run that past my dad. But that's unlikely because that wouldn't cause the car not to start just not to idle and rev normal
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Old 01-14-2012, 05:55 PM   #4
UsdmFocus
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turns out its the cht sensor which is good and bad. Its good cuz its cheap to replace but its bad cuz its a bitch to get out. And im carless again for the weekend :(
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