hey all, I have a 93 escort wagon, manual transmission that when you accelerate it falls flat on its face for a second or 2, then revs up . does it real bad at highways speeds at about 50-60mph. I cant seem to track it down. has anyone else experienced this?
thanks

 

I would normally say to check for codes first but on a 93, the information will be very limited. I would start with checking the fuel system. Items include fuel pressure which sould be about 40 psi and the fuel filter. I am assuming your 93 has a throttle body injection with the shrader valve being on the throttle body.Fuel fiter should be very easy to change once the pressure is relieved via the shrader valve.
Lastly, a problem could exist with the throttle position sensor. That can be easily checked with an ohm meter. Look for "dead spots" as the sensor is slowly rotated.

 

thanks for the reply i will check, ive never tested a tps, you wouldnt happen to have a link on a tutorial would ya?

 

i just unplugged the mass air flow sensor, fired it up and no hesitation, it reved up fine. plugged it back in and the hesitation returns. so bad maf ?

 

fixed!, was the MAF, thanks for the help.

 

That's good. I would keep the old one as a spare. It's wire may just need to be sprayed (cleaned ) with MAF cleaner.