Civic engine light stays on! - help

[obiwan]

hi all,

my sister is now driving back to manila from baguio and when we she reached the NLEX, our 1994 esi AT civics (82k mileage) engine light stayed on. and then she noticed that even when she was maintaining a constant speed of say 60-70kph, the automatic gear shifting would shift by itself between 2 gears (eg 3rd-4th). and the all of a sudden even the speedometer stopped working.....

the recent history done on the car was:

- changed timing belt 3 months ago and had it re-tightened 1 week ago (non-original timing belt as parts).
-changed leaking water pump 1 week ago
-changed leaking plastic radiator top at denso 3 months ago
- engine oil is ok

right now she is still on the NLEX on her way home but i texted her to pass by a gas station to check the transimission oil (last time i checked it was 5 months ago and it was ok pa). will post again if the car made it home (hope so)....

hope someone can give advice.....

thanks

[niwde11]

usually sira yung speed sensor kaya ilaw yung engine light(like mine). pwede ring yung tranny me diperensya.

[wildthing]

Mahirap idiagnose ng tama. a mere low oil or faulty oil sensor in the engine can also trigger check engine light.

Highly recommended that lumabas na siya ng NLEX and have it checked muna...baka mas safe na sunduin nyo na siya instead.

[speedyfix]

speed sensor yan most likely pero you better read the code before getting the part.

[obiwan]

thanks for the inputs guys!

what is really weird is that she was still able to drive home...and now....there is nothing wrong with the car...the engine light is no longer lighting up and the speedometer now works again....grrrrrrr, kakainis!

i would prefer that is was broken so i can bring it to a shop and show them the problem.....

do you think maybe the problem is caused by high speed driving? does overheating cause this?

[blink21me]

thanks for the inputs guys!

what is really weird is that she was still able to drive home...and now....there is nothing wrong with the car...the engine light is no longer lighting up and the speedometer now works again....grrrrrrr, kakainis!

i would prefer that is was broken so i can bring it to a shop and show them the problem.....

do you think maybe the problem is caused by high speed driving? does overheating cause this?

high speed driving doesn't have anything to do with a check engine light unless you cause something to leak (applicable only to some cars). Overheating doesn't usually cause a check engine light, it may, but not in a sudden... just check the sensors, or rather replace them already...

[speedyfix]

keep observing it... problems don't normally correct themselves.

[ronald_m]

Time will tell.

[batang_raon14]

Time will tell.

:dito: Yes... better to have that car checked kahit sabihin mo lang ung nangyari sa mechanic. Doesn't hurt to ask for their opinion naman eh.

[obiwan]

Thanks again for the replies guys,

any idea on how much these speed sensors are? (rough estimate) and which stores i can buy them from?

then i will take it to a car shop for them to replace it.. since i dont know how to do these things myself...hehe

thanks

[lakay]

take it to a shop that read OBD-II. It should download all diagnostic history of the car.

[speedyfix]

no need for an obdII reader on older hondas. just jump the 3 prong service plug and read the blinks of the cel.

[obiwan]

thanks Speed, I will be texting you...

[cj]

tama sir obiwan. better bring it to speedyfix for thorough diagnosis. mahirap baka umulit sa alanganin na orasat lugar.

[speedyfix]

ok na kotse ni obiwan... speed sensor lang problem