Hello all,

About a month ago I took my truck to my local quick lube to have the radiator flushed and filled. The truck was running just fine prior to this, but after I picked it up, it ran like crap. Hesitating, and acting like it wanted to stall. I decided to drive home and see how it acted. By time I got home, about a 3 mile drive, the truck seemed to be running much smoother.

Now, every so often, when I go to accelerate, the truck hesitates. It had never done that before the flush/fill. I'm wondering if the guys at the quickie lube bumped a sensor or something? I can't image what else it could be.

Anyone have any idea's?

My truck is a 1998 Mazda B4000, 4.0L.

Thanks.

Daryl Rose

 

Either that or a vacuum line, do you ever get a CEL, have you check all the electrical connectors.

 

Hi Ken, Thanks for the reply.

No, I don't get a CEL. I've check electrical connections. At least the ones that I can see from looking around the engine compartment. I haven’t crawled around underneath the truck. I guess I not really sure where I should be looking. I would think that if the quickie lube guy's knocked something loose, then it would be around where they drain the coolant. But, I'm not sure where they drain it. Would that be just from the radiator, or would there be someplace on the engine that they drain it from?

When this first occurred, my first thought was the MAF. Just prior to getting the coolant flushed/filled, I took off the MAF and cleaned it. (I followed instructions that I found posted here on this site.) Anyway, when I took off the MAF, I broke off the underside tab that secures the plug onto the MAF. When I plugged the connector back on, it plugged on tight & is quite secure. I immediately checked the connector when I first started having this problem. It was still tight. I checked it again just recently, and it is still tight. I don't think that this is a problem, but you never know.

Any other thoughts or idea's? Anywhere that you would recommend that I start looking?

Thanks for the help.

Daryl Rose

 

It seems that up to this point you have not taken your truck in to pull any codes. Get that done first so that you can eliminate any related possibilities.

 

I agree, see if you can find a local parts store to pull them for free.

 

That seems like the most sensible thing to do. I'll check with some of my local parts stores to see if they can do it.

Thanks for the suggestion.

Daryl Rose