2nd Generation Specific 1986-1992 Discussion

odd hesitation

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Old 02-15-2007, 05:17 PM
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20-ish year old cars with most likely original parts tend to have a lot of those kinds of problems.



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Old 02-15-2007, 10:25 PM
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Originally Posted by teknics' post='859203' date='Feb 15 2007, 04:17 PM

20-ish year old cars with most likely original parts tend to have a lot of those kinds of problems.



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yeah it ran good all day today so im just going to hope it doesnt happen again till I can have a look this weekend.
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Old 02-16-2007, 06:21 PM
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hmm, maybe a loose/poor connection. check the wires, make sure theyre not rubbing or falling out of the connector. bla bla bla



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Old 02-17-2007, 07:40 PM
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that seriously sounds like a dead spot in the TPS resistor!!!! is it in the exact throttle position that it happens every time?.... you need a new tps sensor my friend... have that tps hooked up to an O-scope and watch it fall off at a certain throttle position... or if you are by chance running an afc, they have a built in o-scope... but its reaaaally reaaally slow so it will be harder to find on that but....
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Old 02-24-2007, 07:34 AM
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well with my great luck my car was stolen last weekend..... It was recovered however but bagged to **** , ran out of gas, and left on the side of the road.... thank god its all still there howver its acting up even more now...



The hesitations I was getting before come and go as they please, and its not so much at a certain rpm its after a certain amount of throttle being applied.





ALSO the car is very hard to start its as if its carberated, I have to pump the gas repeaditly to keep it running or else it starts up and immeadiatly dies out. I have to wait for it to fire up, the repaditly pump the gas to keep it going... usuallly dies out still the first few times then I get it going and have to keep it around 1500/2000rpm to keep it from dieing then after about a minute it will idle on it own....



Any suggestions would be lovely im losing my mind here lol
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Old 02-27-2007, 11:43 AM
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Originally Posted by merzzzy' post='860885' date='Feb 24 2007, 05:34 AM

well with my great luck my car was stolen last weekend..... It was recovered however but bagged to **** , ran out of gas, and left on the side of the road.... thank god its all still there howver its acting up even more now...



The hesitations I was getting before come and go as they please, and its not so much at a certain rpm its after a certain amount of throttle being applied.

ALSO the car is very hard to start its as if its carberated, I have to pump the gas repeaditly to keep it running or else it starts up and immeadiatly dies out. I have to wait for it to fire up, the repaditly pump the gas to keep it going... usuallly dies out still the first few times then I get it going and have to keep it around 1500/2000rpm to keep it from dieing then after about a minute it will idle on it own....



Any suggestions would be lovely im losing my mind here lol


the hesitations is a bad tps... replace the tps..... as far as the hard to keep running check and make sure your not getting any false air ( vacuum leaks, or fresh air entering the engine after the MAF sensor) if it enters after the MAF sensor then its not helping to open the flapper door and the computer does not know how much fuel to spray...
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Old 02-27-2007, 05:43 PM
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Originally Posted by MazdaEnthused' post='861370' date='Feb 27 2007, 10:43 AM

the hesitations is a bad tps... replace the tps..... as far as the hard to keep running check and make sure your not getting any false air ( vacuum leaks, or fresh air entering the engine after the MAF sensor) if it enters after the MAF sensor then its not helping to open the flapper door and the computer does not know how much fuel to spray...




Well it stoped hesitating now that I cleaned up some wiring however it starts reallly badly still.....



One thing I see that doesnt add up is there is a nipple right above the oil filter (closer to the firewall I think) that isnt connected to anything and seems to pull vaccum.



backfires like crazy when im trying to strat it aswell lol crazy gunshot sounds until it stays up and running and it seems as if the thermowax no longer works.
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