F22a6 need help

[boosted_DA]

i have a 93 accord and it idles great, but as soon as i give it gas and about 1500 rpm it bogs down and back fire out the intake. the check engine light is throwing two codes. tps and idle air control valve . iv replaced both and reset ecu . still doing the same problem. it only go's 15mph. lol. any help would be great . thanks

[cuate01221]

Sounds like your timing is off. Get a timing light in there and make sure everything is as it should be.

[boosted_DA]

i just did that timing is good.

[alan lx]

You stated it is backfiring. If you checked the timing and that is good, is it possible you gotten some bad gas?

[boosted_DA]

iv checked that to. im outside right now looking over the car. gas iis good,new fuel filter and put in a new fuel pump last week. the car ran great for about a mth then started doing this. iv also taken of the intake and cleaned it. and checked the injector too.

[GhostAccord]

There are only a couple ways that I can think of that would cause you to have a back fire in the intake. If the timing is off, your valves are bent or they are out of adjustment.

If your ignition timing is OK then you should try doing a compression test and/or leak down test.

When you had your intake off to clean it did you notice any runners/intake ports that were burnt or darker than the others?

[deevergote]

You checked timing... ignition timing, or valve timing?

[boosted_DA]

There are only a couple ways that I can think of that would cause you to have a back fire in the intake. If the timing is off or your valves are bent.

If your ignition timing is OK then you should try doing a compression test and/or leak down test.

When you had your intake off to clean it did you notice any runners/intake ports that were burnt or darker than the others?

when the intake was off some of the ports were burnt

[ssondubs]

I had a similar problem and it ended up being the ignition coil.

[DejectedAngel]

Sounds like maybe your distributor is off timing?

[boosted_DA]

I had a similar problem and it ended up being the ignition coil.

just replaced the ignition coil yesterday. still doing it. im going to re time the motor and let you guys know what happens

[GhostAccord]

When was the last time you had your valves adjusted? They could be on the tight side, this could cause a back fire into the intake as well.

[boosted_DA]

When was the last time you had your valves adjusted? They could be on the tight side, this could cause a back fire into the intake as well.

only had the car for two mths. i havent checked the valve clearance yet but i will as soon as i get off work.

[wed3k]

just because you replaced both doesnt mean they are still functioning correctly. id still check signal at the ecu if possible.

tps is a huge factor on speed density cars.

[92exa6]

+1

Did you actually set the tps when you installed it, or just bolt it on? A wrong signal from a tps can cause all kinds of running issues, such as a very rich condition which would cause poor throttle response and backfiring (either intake or exhaust) from the now fouled spark plugs. Pull them out and take a look at them. Are they a light tannish gray, or carbon black?