Car won’t rev past 3k

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Tyler_pevehouse
Posts: 1
Joined: Sun Dec 09, 2018 12:19 pm
Car: 1993 240SX convertible

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Hey guys I got a 93 vert with a sr20det swap got it from this kid cause he was tired of it idles at about 2k and only revs to like 3k and acts like it’s 2 steping has a z32 maf on it and a chip tune looks like it’s getting plenty of fuel pressure too checked the voltage on the tps with key on just .45 and wot 4.volts but while the car is running it’s .45 and when I increase the throttle or wot won’t get past .65 also checked the coolant temp sensor and the pigtail looks to be good can’t find any vacuum leaks or anything I am kinda thinking it is the ecu also unplugged the maf and it did the same thing


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NukeKS14
Posts: 310
Joined: Wed Apr 10, 2019 2:50 pm
Car: 1995 240SX SE - KA24DE-T
AC Cobra Mk IV Rep.
2020 Civic Si

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Yeah its running in limp mode. There is a tutorial on here for how to read the codes from the ecu and that's where I would begin.

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PapaSmurf2k3
Site Admin
Posts: 23998
Joined: Thu Nov 21, 2002 3:20 pm
Car: 2017 Corvette, 2018 Focus ST, 1993 240sx truck KA Turbo.
Location: Merrimack, NH

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+1 for reading the codes. If its in limp mode, it should have some codes telling you what's up.


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