Why is my acceleration sluggish? - 1998 Honda Civic EX Coupe, AT, 1.6 Liter, 4 Cylinder V-Tech?

I would say the power problem is also causing a weak engine spark and lowered engine power.

Does it rev slower then normal?

Does the transmission do anything funny?

Also the blinker check the rear light relay and fuse check the bulb and change it. Check the wiring to the bulb is it lose corroded pulled apart. If the plugs wernt gaped correctly that will kill engine response and power.

1998 Honda Civic Ex Coupe

First of all, check the electrical connections and bulbs in all of your lights. As for the decrease in acceleration. On the engine side of it.Could be injectors, a bad spray pattern makes for a poor burn. Also, poor valve seating and therefore bad compression. Those should make your mpg decrease as well. Wearing rings for bad compression, which would burn oil. Check your water pump since you had the leak. If the water pump is bad it coud drain alot of power to make it spin( not likley without you already knowing though) On the transmission side of it. Old seals not holding pressure as well. Old torque converter, allows fluid to slip by requiring more power from engine to move. Even with atf flush you still have an internal filter which will clog to some extent (that is what it is designed for) when that happens it impedes the hydraulic flow. Also your tranny has individual clutches for its gears that could be worn (again, not a matter of mainenance, just age) that would mean that it takes more hydraulic flow and more time to lock up, requiring more power. Last but certainly not least try putting the best gas you can find in it (after running it nearly empty). Bad gas makes for bad preformance. I think that your other problems are purley coincidental.

I own a 97 Ex I know wat u talking bout

1st of yes change ur thermostat it probably burnt the seal off mine did i blew every radiator hose in it

2nd make sure or change ur water pump and timing belt

3rd if its only when its cold its a sensor thats wat mine is my mechanic said its the map n idle sensor but im to lazy to buy them n change them lol

3rd make sure ur radiator is not crakked or leaking fluid

after u said n done all that get a tune up

Mobil 1 I was running royal purple but to expensive n u lose power after like 1500 miles

so get mobil 1 oil n there oil filter

fuel filter

NGK V-Power Spark Pluggs

Lifetime Plug wires

thats should help out if not then

it might b sum mechanical or electronics (sensor etc) problem

but that should do it give it a new over haul

never said how many miles it had but im taking more than 100,000

so do all that ill b ur money worth ull waist around 500-1000

depending where u go

I say Advance if theres any near U they have 5Q & oil filter (mobil 1)for 30 bucks

get also fuel injector cleaner gas treatment n summ of that add them b4 u get gas

Hope it helps

sorry tried ansewring ur other 1 but couldnt

bout ur left blinker ur taillight might b going out

I own a 97 Ex I know wat u talking bout 1st of yes change ur thermostat it probably burnt the seal off mine did i blew every radiator hose in it 2nd make sure or change ur water pump and timing belt 3rd if its only when its cold its a sensor thats wat mine is my mechanic said its the map n idle sensor but im to lazy to buy them n change them lol 3rd make sure ur radiator is not crakked or leaking fluid after u said n done all that get a tune up Mobil 1 I was running royal purple but to expensive n u lose power after like 1500 miles so get mobil 1 oil n there oil filter fuel filter NGK V-Power Spark Pluggs Lifetime Plug wires thats should help out if not then it might b sum mechanical or electronics (sensor etc) problem but that should do it give it a new over haul never said how many miles it had but im taking more than 100,000 so do all that ill b ur money worth ull waist around 500-1000 depending where u go I say Advance if theres any near U they have 5Q & oil filter (mobil 1)for 30 bucks get also fuel injector cleaner gas treatment n summ of that add them b4 u get gas Hope it helps

HAHAHAH MADE TO RACE!!! JOKE !!!!!

dude ok, you need to check and see how old the engine is, most likely v-techs are installed by non professional mechanics…in other words, an everyday kind of guy.

After a while your engine will probably have vacuum leaks and broken or worn out cylinder rings, to top it off with worn out cylinder walls. The valve timing may also be out of tune so if you have been driving this “race car” like a race horse then u might have to consider a major tune up. 1998 civics will probably not even detect some of its engine malfunctions.

Hondas are not made to race (unless it is an NSX, or rally racer), they are simply grocery getters or economy cars.

well i work on imports all day long and have owned a honda civic as well. so some people do have a point when they say auto tranny is not the best for racing, or going fast on hondas.

also does your honda ever shift hard? cuz then it might be a transmission problem. you should mention how many miles your car has. if its over 150K you might have just normal wear doen on your internal parts. like the rings. i would also go get the ECU xhecked

HAhahahahahaha its vtec not v-tech your talking about an engine not a phone. any ways if it has new spark plugs try putting new spark plug wires if it has all those things you said new i cant think of anything else. may be you have alot of things in your trunk that makes it wiegh more. and if your blinker blinks too fast it means that either your front or back blinker isnt working.

For acceleration issues, I would suspect your clutch disc wearing down for your automatic transmission. This is a material similar to your brake pads that your automatic transmission controls to disengage and engage your engine to get your car to accelerate. If this is worn down, you will feel a delay in acceleration as your clutch disc slips.

You may also want to inspect your engine timing. You'll need a timing gun while setting your car in service mode, to ensure that your timing is within specifications...10-12 degrees before top dead center (BTDC). Bad timing can affect your car's ability to combust properly and provide strong acceleration.

Good luck!

Tiny engine and an automatic transmission makes for a slow car.

Also your blinker is bad which has nothing to do with how slow your car is.