3vze 3.0 problem
06-08-2011, 04:27 PM
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3vze 3.0 problem
i have a 1990 toyota pickup with the 3.0 and my engine started running rough its a new engine and i got code 31
(mass air flow or vacuum swith) and 52(knock senor). Well ive put two new mass air flow sensors on and 3 sets of vacuum switches and it hasnt changed anything, but the maf where reman. the first one i put on lasted about a week before it started messing up again and the second just didnt do anything at all. any suggestions?
(mass air flow or vacuum swith) and 52(knock senor). Well ive put two new mass air flow sensors on and 3 sets of vacuum switches and it hasnt changed anything, but the maf where reman. the first one i put on lasted about a week before it started messing up again and the second just didnt do anything at all. any suggestions?
06-09-2011, 03:38 AM
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If you put a MAF on it, it won't work because the 90s use a VAFM. Have you checked the wiring leading to the VAFM & Knock Sensor? The knock sensor is a PITA, located under the intake. Probably just the pigtail that runs to it is bad. There are TONS of threads on here about both issues.
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