Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start now)
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2004-2007 Cadillac CTS-V Performance Mods Discussion, Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start now) in Cadillac CTS-V Series Forum - 2004 - 2007; Anyone had this problem? I read this thread http://www.cadillacforums.com/forums...0-p1516-3.html but I don't know if he ever got his fixed. So ...
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    dedeaux89 is offline Cadillac Owners Fanatic
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    Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start now)

    Anyone had this problem? I read this thread http://www.cadillacforums.com/forums...0-p1516-3.html but I don't know if he ever got his fixed. So any input would be greatly appreciated

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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    Quote Originally Posted by dedeaux89 View Post
    Anyone had this problem? I read this thread http://www.cadillacforums.com/forums...0-p1516-3.html but I don't know if he ever got his fixed. So any input would be greatly appreciated
    What throttle body and harness are you using? With a freah install I would recheck the wiring that I just fooled with.

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    dedeaux89 is offline Cadillac Owners Fanatic
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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    nick Williams 102, I got the ls6 to ls2 throttle body conversion wiring kit

    Quote Originally Posted by darkman View Post
    What throttle body and harness are you using? With a freah install I would recheck the wiring that I just fooled with.

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    InfrareV is offline Cadillac Owners Member
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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    I installed LSA Heads, a Katech LS3 Camshaft, and a Fast 102. The only code I received was a P0300, I wouldn't expect any trouble with only the intake. Recheck all your work.

    Edit: I didn't see your post regarding the Nick Williams. I was under the impression you would need a tune to use the Nick Williams. I would go back to the factory throttle body and see if your issues go away. If so make an appointment to get the thing tuned and bring the Nick Williams with.

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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    Quote Originally Posted by InfrareV View Post
    I installed LSA Heads, a Katech LS3 Camshaft, and a Fast 102. The only code I received was a P0300, I wouldn't expect any trouble with only the intake. Recheck all your work.

    Edit: I didn't see your post regarding the Nick Williams. I was under the impression you would need a tune to use the Nick Williams. I would go back to the factory throttle body and see if your issues go away. If so make an appointment to get the thing tuned and bring the Nick Williams with.

    I had already done heads,cam,headers, and a lot of other stuff so I figured that just adding the intake wouldn't be a big deal, I knew that it might run a little rough until I can get it retuned. It even started a few times after having installed the intake, it idled high and said engine power reduced, so I figured that it was because it needed to be tuned, I didn't drive the car. I tried to crank it to pull it onto a trailer to have my friend install my clutch and exhaust then it wouldn't start, tried jumping it etc, but now it just decided to not start, it turns over and attempts but dies like 2 seconds after turning the key

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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    The Nick Williams is an LS3 based Throttle body and will not work at all since they open in the opposite direction as LS2/6 units. Get an LS2 based throttle body and the problem will be corrected.

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    dedeaux89 is offline Cadillac Owners Fanatic
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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    Nick Williams 102mm LS3/L92/LS7/LSXR (Electronic) Throttle Body, Will work on modified LS1/LS2/LS6 engines also. This throttle body accepts the LS2/LS3 stock throttle body harness. Nick Williams is known for making some of the highest quality throttle bodies on the market. This is a great addition to the FAST LSXR 102mm Intake Manifold. This throttle body has a 4.23" OD, so you'll want to use a 4.25" coupler.

    **LS1 Vehicles require adapter harness. Harness allows the use of a LS2 throttle body on an LS1 vehicle.
    So this is false? or is there an LS2 based nick Williams?

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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    False advertising. Any LS3/7 throttle body will not work since the blade actuates in the opposite direction wreaking havoc on the PCM. The Nick Williams throttle bodies have had lots of problems, look over on the V2 board.

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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    So my only option is the ls2 tb? is there a 102 tb made that will fit our cars?

    ----------

    lollygagger8 has the nick Williams 102tb on his car though right?

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    InfrareV is offline Cadillac Owners Member
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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    The Nick Williams has a better reputation then any of the other 102's, I wouldn't hesitate to keep it but it will need a tune.

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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    I believe Crankedupforit runs a Nick Williams ddbw.

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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    Quote Originally Posted by darkman View Post
    I believe Crankedupforit runs a Nick Williams ddbw.
    I've been running the NW for 2 years. Only had an issue with the P1515 & P1516 during wide open throttle on the road course. I had the tune altered to ignore the timing differences between the throttle blade position and the accelerator pedal position. Darkman is right about the harness. Check that as well. BTW, the P1516 and 15 are not unique to NW102. Many of my vette friends at the track have experienced these type of issues with the stock TB as well.

    Google search underscores Darkmans advice:

    #PIP3089B: SES Light And Reduced Engine Power DTC P0120 P0220 P1516 P2135 - keywords accelerator actuator APP blade body connector connection DTC L33 L59 LH6 LR4 LM7 LS1 LS2 LQ4 LQ9 module position reduce sensor - (Oct 31, 2006)


    Subject: SES Light and Reduced Engine Power DTC P0120 P0220 P1516 P2135


    Models: 2004-2006 Buick Rainer

    2005-2006 Cadillac CTS-V

    2003-2006 Cadillac Escalade

    2003-2006 Chevrolet Avalanche, Corvette, Express, Monte Carlo, Silverado, SSR, Suburban, Tahoe, Trailblazer

    2003-2006 GMC Envoy, Savana, Sierra, Yukon

    2003-2006 Hummer H2

    2005-2006 Pontiac GTO

    Equipped with a 4.8 5.3 6.0 or 7.0 V-8 Engine

    The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

    Condition/Concern:
    A vehicle may be brought into the dealer for a reduced power message, and DTCs P0120, P0220, P1516, P2101, or P2135.

    The Throttle Actuator Control (TAC) / throttle body type trouble codes, may be caused by a loose wiring crimp at the throttle body connector, or a broken throttle body circuit.

    Recommendation/Instructions:
    Complete the current SI diagnostics for any symptoms or trouble codes found. If a intermittent T/P or TAC module type code is occurring complete the inspections below.

    Inspect all related throttle body terminals for a loose wiring crimp. The loose crimp may be difficult to find, and the poor connection will be between the terminal and the copper strands of the wire. Wiggle test the individual throttle body circuits to see if the concern can be duplicated.
    Inspect the related circuits for broken wires inside the insulation. The outer wire insulation may look fine, but the internal copper strands may be partially broken. Breaks in the wires usually occur within 1 to 4 inches of the throttle body connector. Wiggle testing may also induce a trouble code to set.
    On C/K trucks complete SI procedures for voltage drop on grounds G103 and G104. Grounds G103 or G104 may be loose or corroded.
    If a terminal crimp or a broken wire has been found, repair or replace only the circuits involved. There is a throttle body pigtail connector available through GMSPO, but installing this pigtail connector may cause other intermittent TAC module/TP codes at a later date. If this pigtail must be used, please follow the SI procedures for Splicing Copper Wire Using Splice Sleeves. (the proper Kent-Moore crimping tool must be used for this repair)

    For shits and giggles I'd check the ground wire on the back of the head as well.

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    dedeaux89 is offline Cadillac Owners Fanatic
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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    Throttle position is showing 23.1% on the scanner. Does that info help?

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    dedeaux89 is offline Cadillac Owners Fanatic
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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    Scanner is showing tips at 23.1% with engine off. Checked grounds and wiring still no start

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    Re: Reduced engine power, P0120 P0220 P1516, after FAST 102 install (car won't start

    It sure would be nice if you had access to a stone stock LS2 throttle body to see if it would start and run, and if so with what codes. That way you would at least know your wiring harness adaptor, etc. were all in order. It may well be that the tune is so far off that it cannot run.

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