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94 na supra 5speed bogging out til it hits 4500rpm

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I have a 94 jeep cheroke SE with the 4.0 and aw4 transmission with tps backfeed of 4.2 volts


have you tried starting in low and shift manually? aw4 transmission , is that all the time 4x4

Aug 13, 2017 | Jeep Cherokee Cars & Trucks

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94 Jeep Cherokee TPS - back feed


You are still getting high or low voltage at tps? What is the voltage and do you have a unstable idle? Put you + lead on terminal 3 and - lead on terminal 1 turn ignition on and check voltage to be at approximately 5 volts. You can also back probe with it connected at center wire and ground probe to a good ground at engine. Turn ignition on it should read between 0.20 - 0.90 slowly manually open throttle it should rise all the way to 4.5 voltd at full open. If its bad change tps if no 5.0 volts from pcm on first test check connections at pcm. The center tps connector supply wire comes from pin 22 and connection 3 ( which is 5 volt supply ) comes from pin 6. You should be able to back probe pin 6 turn ignition on and have 5 volts. If not 5 v brain has problem.

Sep 08, 2014 | 1994 Jeep Cherokee

1 Answer

94 grand marquis shakes at 40mph til i let off gas


Check the fuel pump and plugs{coil}

Dec 15, 2013 | Cars & Trucks

1 Answer

I just replaced the turbo on my 1987 supra i drove it home from my shop and then the next day i was goin for a drive i started it up every thing was good i hit the gas when i started to build boost it...


do you have a service manual that troublshoots turbos--get car scanned and inspect entire vehicle for vacuum leaks or other problems of aging-itz 24 yrs--OBD I diagnostic n dont go replacin parts til u know

Aug 18, 2010 | 1987 Toyota Supra

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get a honda or toyota,.......

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Running problems with a 94 Ford Probe GT


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Mar 13, 2009 | 1994 Ford Probe

1 Answer

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have a look on the mkiv.com web site (tech article page) step by step how to solve this issue. I have done this before and it takes a few attempts.

Dec 29, 2008 | 1994 Toyota Supra

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Wont rev past 4500rpm


I hade this proble on my 86. It may not be your same problem but check the connection plugs on your secondary injectors the heat from the engine worped the connectors preventing a tight fit so they would come loose and at about 4500 rpm the car would bog cause of lak of fuel.. or your secondary injector are bad

Dec 06, 2008 | 1987 Mazda RX-7

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