Engine shuts off after a few seconds - Mazda 626 '91

Is the local shop, a Mazda authorized service center? If not, I would get the car in so the "experts" can diagnose.

Good luck.

unfortunately

Hello,

My buddy's wife has a Mazda 626 (I think it's a 91 or 92) that unfortunately has a very strange problem. They were driving it home the other night and the engine just cut off. When they try to start it now, it will stay on for 2 or so seconds, and then cut off. Sometimes he can give it some throttle and it will stay on for longer. It doesn't *try* to stay on, it just cuts off immediately. He's replaced a few things on it, including distributor cap, some vacuums, but I don't have a list of what all he's done unfortunately. A local shop didn't even know what to do with it after diagnostics. He can get code signals from the ECM (says it's regarding throttle - but he says it might be because he pulled a sensor earlier and it hasn't reset), so we know the computer works somewhat, but I'm not sure if the ECMs can have 90% functionalitiy working and 10% broken to them.. not sure how they work. Anyway, he's a mechanic for Ryder, so he knows a fair bit, but the Mazda line of cars is a bit foreign to him (he's a Jeep/domestic kind of guy). Any ideas on what might be cutting off the engine would be greatly appreciated. Thank you!

Dustin Travis

He has a bad Throttle postion sensor or bad vaf, check to make sure everything is pluggedd in, check all vacuum hoses and intake piping for leaks,etc... I am assuming it has good spark and fuel correct?

My buddy's wife has a Mazda 626 (I think it's a 91 or 92) that unfortunately has a very strange problem. They were driving it home the other night and the engine just cut off. When they try to start it now, it will stay on for

Dustin Travis

Thank you. I will let him know of what you said. I believe he's replaced the MAF sensor, and even got another vaf with sensor for replacement, but that didn't work either. I know he's checked the hoses.. I believe he found one that was either off or cracked (can't remember) but that didn't resolve the problem. *Sigh*

unfortunately

Some info: Actually they don't have MAFs, those didn't come around on 626's until 1993, it only has a VAF, vain airflow meter. Same engine is in Mazda Mx6's and Ford probe's of the same year.

Well that's good to know. :-) Thank you.

Could also be a failing fuel pump.

unfortunately