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I was tuned in then 'bad signal' on vesta 9400

The strength is around 25% Then goes up drops off too. Quality 0.

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Posted on Jan 02, 2017

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cmsrhp
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SOURCE: no input 2 signal

The connections bad.... try rewiring the one for signal 2 or if its making a good connection... look for a weak spot in wire... that helped me when i couldn't figure out wiring

Posted on Aug 28, 2012

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Why is the speedometer reading erratically?


Depending on the type an year vehicle an the electronics on the car , the instrument cluster could be at fault ! The stepper motor that moves the speedo could be the problem if a GM product ! As far as the speed sensor goes a few other things wouldn't work very well if it were bad an the check engine light would be on more then likely because this is an input to the PCM - engine computer ! The transmission would shift erratically !
Speedometer
The IPC displays the vehicle speed based on the vehicle speed signal from the PCM. The PCM converts the data from the vehicle speed sensor to a 4000 pulses/mile signal. The IPC uses the vehicle speed signal circuit from the PCM in order to calculate the vehicle speed. The speedometer defaults to 0 km/h (0 mph) if a malfunction in the vehicle speed signal circuit exists.
So I would say the instrument cluster is bad !

Jun 10, 2015 | Cars & Trucks

1 Answer

2007 chevrolet impalahave a 07 impala runs great till ur rpm meter goes past 4000rpm then drops down to 0 runs bad after shut down engine for around 10 mins then runs good again check with scanner no


It needs a scanner on it to find the problem while driving it. Several things can cause this. At 4000 rpm's in park the ecm will suppress the engine. this would be the Neutral safety switch. So going from there, if not the switch, it could be wiring or a bad buffer in the ecm.

Oct 16, 2014 | 2007 Chevrolet Impala

2 Answers

Why does my 98 expedition make a pinging noise at 25 to 35 mph then goes away


this noise is detonation. It is an uncontrolled untimed ignition from hot spots in the combustion chamber igniting an incorrect air/fuel mixture. IT is harmful if left un repaired as it has the capability of melting holes in pistons.. Run the fault codes or check /change the air/ fuel mixture settings and ignition timing of the engine . Most engines run around 10-12 degrees advanced and any more than that will help cause the problem, as the spark occurs too early and the extra pressure built up by the combustion will combust the rest of the mixture in the cylinder. Fuel quality is important so if you are using a standard grade fuel( 89-91 octane rated) fill with a premium fuel with a higher fuel octane rating . Give a miss to E- fuel mixtures

Sep 12, 2014 | 1998 Ford Expedition

1 Answer

No input 2 signal


The connections bad.... try rewiring the one for signal 2 or if its making a good connection... look for a weak spot in wire... that helped me when i couldn't figure out wiring

Aug 28, 2012 | Cars & Trucks

1 Answer

Does the ECM control the MPH gauge?


well yes but no,the speedometer signal comes from speed sensor in the transmission then goes through the ecm/pcm via the tcm (transmission control module, then on to your speedo,if the speed sensor goes bad usually the speedometer will work crazy if not at all also the instument clusters also go bad causing failure too find a new tech dude

Feb 28, 2012 | 1998 Dodge Caravan

1 Answer

Car lacks pickup strength??


if the pickup strength use to be better, most likely you need to tune up your car. that could mean to replace air filter and spark plugs. and being a 2002, you maybe close to the 100,000 miles, you should consider change the cables that goes to the spark plugs, they go bad around this time.
you can add some seafoam in your gas to help clean the injectors.
you can add some seafoam in the oil, a 100 miles ahead of your next oil change, you help remove sludge from the engine.
you can add some deepcreek thru the air conducts to help clean the crankcase.

Apr 29, 2010 | Hyundai Motor 2002 Sonata

1 Answer

The oil pressure gauge goes from 0 to all the way up and the needle moves back and forth while driving it checked oil its good now its clicking underneath the car and it felt like the transmission was...


First we would need to know when this occurs. Asuming the oil level is at the full mark!. If the pressure goes up during acceleration and down at idle when engine is fully warmed up, then this is normal. An engine requires 10 psi of oil pressure per 1,000 rpm ( ex. 20 psi at 2,000 rpm, 25 psi at 2,500 rpm, and so on ) . If the gauge is moving back and forth erratically at idle , i would say the gauge is bad. If it drops to 0 while accelerating I would say your oil pump is bad. If from time to time it seems to work and other times it seems not to work, I would say the oil pressure sending unit for the gauge is bad. If the pump failed you would start to here a Knocking noise from the engine in a short period of time. Use the above scenario's to narrow down what it may be.

Mar 27, 2010 | 2005 Nissan Altima

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