Power Issue, CEL P1129

[Lee203rd]

Having lack of power issue engine code P1129 can someone help

 

[Mr.Baker]

Having lack of power issue engine code P1129 can someone help

Have you looked up to see what the code is?
Do that, then trouble shoot from there.

 

[Lee203rd]

Map sensor I get a new one but still the same thing

 

[XpL0d3r]

Probably not a MAP sensor issue. The sensor sends signals to the ECU based on manifold absolute pressure (hence, MAP). This is based on vacuum. Higher vacuum = higher voltage sent to ECU.

So... any vacuum leaks? How is your idle? I would start by cleaning the IACV.

 

[Lee203rd]

I did clean it still the same thing but the light didn’t come on it’s been a day and a half no but still no power

 

[Lee203rd]

And my idle is up and down can I find a vacuum

 

[Lee203rd]

Or can it be a bad iat sensor

 

[XpL0d3r]

And my idle is up and down can I find a vacuum

This is a sign of a vacuum leak.

What else have you tried? Stock motor? What engine? The more details the better, especially with what you've tried so far.

 

[Lee203rd]

02 Civic 1.7L v-tec I get a new map sensor I check the pcv I Cleaning the IAC I removed the power cam pully to see if my mine seal was leaking

 

[Lee203rd]

OK where should I start

 

[Lee203rd]

I did I get 5.1 And it Should be at five

 

[Lee203rd]

It’s saying voltage is higher than expected we would Should I start

 

[Lee203rd]

At the map sensor

 

[civteck]

Color wire? Voltage to ground on each? KOEO? KOER? need to know the specifics if we can help.. grammer check and pics would be great..

Sent from my boujea ass phone

 

[XpL0d3r]

The OP may also be interested in the thread below found by a Google search with this phrase: Honda Civic code P1129

https://www.civicforums.com/forums/36-mechanical-problems-vehicle-issues-fix-forum/339343-p1129-map-higher-than-expected.html

Cam timing... interesting