Misfire, Hesitation, or just too much rain??

[Bonkers]

I was out playing in the thunderstorms today and the car started to act up on me. When I was cruising about (65-70mph) I kept getting a feeling through the drivtrain like the car was hitting a bump - only it wasn't hitting anything. There wasn't any signs during idle or acceleration, just when the car was holding highway speed.

I think I know what this may be, but I wanted to run it by you guys first.

 

[Tom F&L GoR]

Puddles.

 

[Bonkers]

It wasn't traction, I know all too well what that feels like in the rain, this was definately something in the motor.

 

[GR8_ASP]

Agree, puddles. The feeling is almost like driving in sand for a moment.

 

[Bonkers]

I have raced this car in cloudbursts, autox'ed her at a ZR when it was too wet for everyone else, even driven through a tropical storm - its not a traction issue. I average about 8hrs a day on the road and made the equivalant of 14 trips around the planet - I know the difference between hydroplaning and an engine malfunction. What I don't know is how the engine works properly.

What would cause an engine to misfire or hesitate at consistant highway speeds, but not during acceleration or idle? I was recently told there is an issue with the intake drinking water at speed, but I never expereienced this before.

 

[GR8_ASP]

I won't argue the point cause I wasn't there. But I will say that the wide front tires cause a huge slowing force when they hit a puddle. Nothing like hydroplaning. It normally also causes the car to **** to one side (assuming th epuddle is not full car width). Other than that I have no clue.

 

[FLOORIN04]

I was out playing in the thunderstorms today and the car started to act up on me. When I was cruising about (65-70mph) I kept getting a feeling through the drivtrain like the car was hitting a bump - only it wasn't hitting anything. There wasn't any signs during idle or acceleration, just when the car was holding highway speed.

I think I know what this may be, but I wanted to run it by you guys first.

Curious why would one play with a viper in a thunderstorm?????

Again why would the same person drive thru large puddles of water then question the car?I would think this would create a bump feel.




also side note I would not use the word fire arund your car

 

[Bonkers]

Again why would the same person drive thru large puddles of water then question the car?

Where did I say I drove through puddles, large or otherwise?

 

[Bonkers]

But I will say that the wide front tires cause a huge slowing force when they hit a puddle.

And I never said anything about slowing - I said it felt like hitting a bump, like I was occationally running over a broomstick or one of those expansion joints in a bridge.

 

[BLUESNAKE367]

Bryan,

I had the same type of situaton happen just days before a upstream 02 sensor went bad.

At first it was just a sound, and then I could feel it almost **** or hesitate.

The Tech also replaced my stock plug wires, stated high humidity effects well used and heat stressed plug wires..????could cause the car to misfire or hesitate...

hope this helps

Rick

 

[malcoll]

What I don't know is how the engine works properly.

Check the electrical connections where the connectors attach to the PCM. I had a similar problem when driving in the rain.

Some moisture had made it's way into one of the connectors and after I dried it out it was fine.

14 trips around that planet... that's a lot... in all that driving and working on cars, I would have thought that you would know how an engine works.