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Author Topic: 92 Capri XR2 Stumbles when around 2500 to 3000 RPM  (Read 135 times)

bicbic

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  • Posts: 4
    • 1992 Mercury Capri XR2
92 Capri XR2 Stumbles when around 2500 to 3000 RPM
« on: November 16, 2017, 05:09:39 PM »

I need some assistance,  my car is stumbling at around 2500 to 3000 RPM.  You can push the accelerator and make it go past.  I have replaced the TPS, distributor, rotor button and cap, wires, plugs.  Checked all vacuum lines, oxygen sensor.  I was told by a mechanic that it could be the throttle body shaft moving and causing the TPS to shift out of place.  Any suggestions.  Thanks
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Rocketman

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  • Old-Timer
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  • Posts: 4955
    • 91 BPT AWD Capri & 1991 XR2
    • http://www.werbatfik.com
Re: 92 Capri XR2 Stumbles when around 2500 to 3000 RPM
« Reply #1 on: November 16, 2017, 09:53:29 PM »

Have you tried pulling codes to see if anything is present?
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1.8L Turbo All Wheel Drive Capri... the "GTXR2"


bicbic

  • Newbie
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  • Posts: 4
    • 1992 Mercury Capri XR2
Re: 92 Capri XR2 Stumbles when around 2500 to 3000 RPM
« Reply #2 on: November 17, 2017, 04:18:08 PM »

yeah, put it on a code reader and it does not code anything.  The check engine light does not come on.  Thanks
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bicbic

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  • Posts: 4
    • 1992 Mercury Capri XR2
Re: 92 Capri XR2 Stumbles when around 2500 to 3000 RPM
« Reply #3 on: November 17, 2017, 04:49:03 PM »

I need to find out where the ignition control module and fuel pump relay are located.  Does anybody know where they are on my engine.  Thanks
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chrispoe

  • Sr. Member
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  • Posts: 371
    • 91 BP Capri GT
Re: 92 Capri XR2 Stumbles when around 2500 to 3000 RPM
« Reply #4 on: November 18, 2017, 05:41:56 PM »

The Ignition module is inside the distributor and the fuel pump relay is behind the ashtray by the ecm.
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Pappy T

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  • Posts: 85
    • 91 base Capri
Re: 92 Capri XR2 Stumbles when around 2500 to 3000 RPM
« Reply #5 on: November 24, 2017, 09:01:46 PM »

Any luck on the hesitation ? My na is still doing it, how did you test your O2 sensor, followed how to's and my readings are all over, how'd you test TPS ? Again , mine were all over the place, thinking I didn't do it right but...seeing you've been there you'd have a fresh know how. Did replace my TPS with used, no difference. Driving me nuts figuring this thing out ( short drive for me ) ready to part it out but I don't usually give up that easy...usually ! Going to be buttoning it up for winter real soon and would like to have a good start to next season with it , wife too . Thanks !
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bicbic

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  • Posts: 4
    • 1992 Mercury Capri XR2
Re: 92 Capri XR2 Stumbles when around 2500 to 3000 RPM
« Reply #6 on: December 03, 2017, 07:36:58 PM »

yeah, we checked TPS with voltage tester, oxygen sensor was checked by running a scan.  We have now singled the issue down to the ECM or computer.  I am currently looking for a new computer but also looking into get my computer repaired.  Sorry to say I still don't have a true answer but mechanic says that is all that is left that it can be.  Will let you know if this fixes my car.  Thanks
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