I've heard that getting your car dynoed is a really good way to tell if there is anything wrong with your car. Is this true?

I'm getting my fuel pump and a few other things checked tomorrow, maybe fuel injectors if they can, but if they don't find any problems, I was going to take it to a dyno shop, which I wanted to do anyways, and see if they find anything wrong with it.

Problem is, sometimes the car dies at low RPM's right after start up, usually when pulling out, or going reverse out of a parking space, BUT on saturday morning it happened when slowing to a stop at a stop light, after the car had been driven for about 45 minutes. The light quickly turned green as soon as I stopped. It started right back up, but still, it was not cool and I do not wat that to happen again. Especially if I was in the middle of a turn or something and got stuck in an intersection

 

It is a good way to learn of a problem you may not have known about (making low numbers, a/f ratio etc) but it's not a diagnostic tool by any means. For all you know your car could be making 200rwhp but still seem fast because that's how you've always known it to be.

 

or u get a ballshot like i did

 

I'll just have the dyno shop check my fuel pump and stuff.....wtf is a ballshot?

 

u ever got hit in the nuts......yea thats how it felt during/after the dyno

 

Well unless the car acts up while its on the dyno, with all of your diagnostic tools connected; I dont see it helping much.

 

It seems like an expensive way to diagnose a car. If you are worried about your fuel pump, why don't you just have the shop hook up a fuel pressure gauge.

 

A great way to check fuel pump operation is to check the current draw with a lab scope. Its almost like looking at your fuel pump with an x ray machine. If you go to any good diagnostic shop they will know what your talking about.

 

I wanted my car dynoed anyways, I was trying to get it all done in one place, that's all. It'll only cost $40 for 2 pulls, yay for dyno days, boo for the place crawling with mustangs.

 

$40 is a deal. If your pump is crapping out your car should be running lean which will show up if they are doing a wideband. I know of a person with h/c pulling under 300 wheels on an LS1, the dyno helped him find out a few plug wires came disconnected. Couldn't tell it was misfiring with the cam

 

40.00 dollar dyno days.. I wish a deal like that would pop up in my area sometime.

 

Pick up the newest issue of Popular Hotrodding, there is an article that tells you anything and everything about what a dyno can tell you.

 

Sounds like your problem could be due to a dirty or faulty Idle Air Control.

 

I hope the shop can find it, whatever it is, it's there right now. It happened to me again yesterday, and I wanted to get it fixed before I went to the dyno, if possible.

 

I had an EGR solenoid problem (code 77). And my IAC was at 85 instead of 35, where it should be and couldn't control my idle.

I also have a sick tranny. My torque converter is not fully disengaging when at a stop, and it shutters when shifting between 1st and 2nd.

But I'm sure that won't affect the dyno numbers.