Question about 1990 Mazda MX-5

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1990 Miata has slow acceleration--particularily getting out of 1st gear. Already replaced maximum air flow sensor and catalyic convertor--now what should I look for?

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Check ignition timing and valve timing

Posted on May 29, 2010

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Very poor acceleration for up to about 6 seconds from 1st & 2nd gears but then okay. More prominent from cold. Engine Management light not on but suspect Mass Air Flow Sensor? - 1.9 Diesel Space Star -...


If you have verified it's an engine problem, not a transmission problem-by noting the same slow response when car is stationary and in park or neutral-then possible the MAF sensor. Clean it with a can of MAF sensor cleaner. If the throttle body is dirty inside, clean that with crc brand cleaner, a throttle body intake cleaner. Check or replace the air filter. If the hesitation is still there, it might be the throttle position sensor. And if still not it, scan for trouble codes and check fuel pressure. Good luck.

Aug 14, 2013 | Cars & Trucks

1 Answer

I have a problem with my engine missing at idle and while accelerating lacks power has exessive fuel consumption sounds like its choking but if i dont give it hardly any gas in will run smooth.


pluged cadliletic convertor or choke stuck or pluged air filter If this started over a period of time,lose of power put your hand in frount of tail pipe check air flow slow or no air flow disconnect cadliectic convertor..i think it is your cadlectic convertot.

Jan 29, 2012 | Chevrolet Cars & Trucks

2 Answers

My 1990 Dodge Dakota runs strong but dies every time I slow down??? Any suggestions? I have replaced the throttle body and two injectors. All belts, hoses, filters and most sensors have been replaced. ...


1990_dakota_695308.jpg Your question about 1990 Dakota has been posted.

90 dodge dekota 2w v6 Runs rough on acceleration but smooth while maintaining speed dies when i come to a stop

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Aug 28, 2011 | 1990 Dodge Dakota

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My 1990 miata is loosing power when i punch the eccelerator. changed fuel filter


Try running some injector cleaner through it , also check to see if there are any air leaks between the throttlebody and the flow meter ( easy way to test is to spray CRC or WD40 at the air pipes while the car is idling, if it revs up while spraying a particular spot, that is where your air leak is.) An air leak between these two parts will let air bypass the flow meter and the engine won't increase the ammount of fuel going to the injectors as you accelerate causing the engine to lean out and hesitate or stall.

Jun 13, 2011 | 1990 Mazda MX-5

2 Answers

98 SW wagon starts fine but stalls out when put into drive or reverse. Code P0743 comes up after diagnostic check. Says Torque Converter Circuit is open. How do I go about fixing this?


I was definitely gonna say your torque converter. The fix is to replace your torque converter. The convertor basically transfers the moving motion from the engine to the non moving motion of your transmission smoothly. When it goes bad it will usually make the motor run rough in gear or stall the motor when it's completely bad. It will be a fairly expensive cost since the torque convertor sits between the engine and transmission. It also could be faulty wiring as well. You would have to have it physically diagnosed by a mechanic to confirm if its electrical or the actual torque convertor.

May 14, 2011 | 1998 Saturn SW

1 Answer

My van has no power when I press the accelerator quickly. It will accelerate normally, but has no high end pedal. I have replaced plugs, wires, fuel filter, air filter, mass air flow sensor, and had the...


Sounds to me that you have an issue with the vacuum. you need to check all lines, make sure none of them are cracked. sensors in the coolant system can get 'gummy', when this occurs the computer will think it is either running colder or hotter than it really is, so maybe have the system flushed. a good way to tell it is a vacuum leak is if when you are cold idle and it is very fast,

Jun 19, 2010 | 2003 Chevrolet Express

1 Answer

Transmission or catalytic converter


sound lik a tranny problem. catalyic convertor reduced speed and they wud b red hot if they the problem check it out. wen it do it again just lok under da car.

May 28, 2009 | 1999 Ford Econoline

1 Answer

Trac light on no power at acceleration


you might need a new catalyic converter
if not i would suggest that you get your sensor checked
these can be a problem the sensor thinks the wheel is slipping and cuts the torque and power down this could be what is happening
also could because of airflow control with the catalyic converter

Nov 28, 2008 | 2004 Chevrolet Cavalier

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