Question about 1999 GMC Jimmy

1 Answer

Starts and runs Great, But the check engine light is on. The code says P1345

The engine is a W. I have gone to three places to clear the code and in 3 to 5 mins. its back. Why is it doing it?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 106 Answers

Hi

You need to have the code(s) read out before you clear them just to ensure that there is nothing sinister going on with the engine management system.

I will, however, say that if the Jimmy is running with no issues or problems then the code will very highly likely refer to either an O2 sensor, the EVAP system, or maybe even catalytic inefficiency. This list isn't exhaustive, just the most popular causes.

Very best regards

Geordie

Posted on Jun 17, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Check engine light came on ,when wife didn't turn gas cap three clicks ,how do i get it to go out


It can take a while for that to go away, If it was not the gas cap then it wont go away, autozone could have cleared the code and it would have gone away. You can clear the code by removing the fuse for the ecm or unhooking the battery, otherwise it may take 3 to 7 starting cycles to reset.

May 27, 2016 | 2004 Hyundai Santa Fe

2 Answers

I have a 98 chevy z71 5.7 350 vortec, i have a p1345 code that stays on i clear it and as i restart the truck it comes back on, the truck runs great and has a small delay when starrted.. what can/do i need...


1345 is cam and crank sensor correlation its mainly the cam sensor going out, also the delay start that also trigger a camsensor code they call it excessive crank time check the fuel pressure that is capable of setting a cam code (1345) If fuel pressure is good (55-60 psi) expect to replace the camsensor you might as well do the crank sensor heres a nightmare on this code it can set if the distributor is off one tooth and yes these distributor have high failure rate

Jun 08, 2011 | 1998 Chevrolet K1500

1 Answer

How to fix p1345 obd code on 97 chevy 1500 5.7 Lt.


P1345 is "Crankshaft position sensor / Camshaft position sensor correlation"

Code P1345 determines if the distributor is installed incorrectly, or if a mechanical malfunction is present in the engine. The light will trigger when the engine is running and the camshaft sensor reference pulse is not detected at a correct relative position with the crankshaft pulse. Most likely causes for this Chevy check engine light code include a faulty crankshaft position sensor, a wiring concern or an improperly installed distributor. A quick check on the crankshaft sensor is to monitor the RPM value with a scan tool while revving up the engine. If the reading is close to twice the expected RPM, then the sensor is likely faulty. There are other less likely concerns possible, such as base engine or computer related issues, but these involve more in depth testing. I hope this information is useful.

May 27, 2011 | 1997 Chevrolet K1500

3 Answers

Check engine light is on but it needed an oil change and i got one but the light hasnt gone off, how do i reset it?


The check engine light does not refer to oil changes, this is for emmision and fuel management as well as a diagnostic tool for other engine components. The only wasy to clear this is to have the dealer clear them or repair what ever is causing the light. It will however clear it self after about 20 times of starting the car and the computer not seing any more bad scans from what ever caused the light to come on in the first place. You can have Auto Zone pull the codes from your car and tell you what caused the light to come on in the first place. To clear the aoil change light turn the key on and press the gas pedal 3 times all the way to the floor without the engine running.

May 13, 2011 | 2005 Chevrolet Aveo

2 Answers

I have a P1345 code and I have replaced both sencors and the engine light still comes on and then goes off. My gas milage is down 3 MPG other then that my engine runs fine.


p1345 is a manufacturer control ignition system or misfire--- ( crankshaft to camshaft position correlation fault ). go to web site-- www.justanswer.com/chevy/185f3-fix-obd-ii-fault-code-p1345-crankshaft.html this site should help you out with more info. good-luck !

Jan 17, 2011 | Chevrolet TrailBlazer EXT Cars & Trucks

1 Answer

What is the codes for a 95 dodge caravan 3.0 v6 it's blinks twice


The 95 Caravan is great for giving you trouble codes. However they are two digit codes. There should be a blink sequence followed by a short pause then another blink sequence (example 2 blinks, short pause, 3 blinks... Then 5 blinks, pause, 5 blinks which means no more codes. Turn key from off to run three times and leave in run and watch check engine light to count blinks. Disconnecting negative terminal on battery for 30 seconds clears codes.

Sep 09, 2010 | 1995 Dodge Caravan

2 Answers

Replaced crank shaft position sensor from autozone. erased all codes. still showing code p1345. ive been told to use acdelco. am i doing something wrong?


Code p1345 is the crankshaft variation learn.You need to get the crankshaft variation learn done for the code to clear.You will need a scan tool.This should take care of the check engine light.Hope this helps.Good luck.

Mar 16, 2010 | 1996 Chevrolet C1500

1 Answer

1996 Olds 3.4L Ocassionally will turnover but will not start


what were the trouble codes, and is your engine light on all the time?

May 02, 2009 | 1996 Oldsmobile Cutlass Supreme Coupe

Not finding what you are looking for?
1999 GMC Jimmy Logo

Related Topics:

139 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

61249 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...