99 GST Bad Crankshaft Position Sensor, or did she Crankwalk?

[Oakley792]

Hello!

I recently bought a 99 GST two months ago with 145,000 miles. Long story short the other night me and a buddy made a trip to get some food, on the way there I was having loppy idle. Sounded like a big cam in the car, very rough when we hit the 2500-3500rpm. We ended up limping it home to his house, left it there. We were thinking a boost leak and would inspect the next morning as it was dark and raining. The next morning we got in the car, started fined. We let her warm up and went for a drive. All was fine, we were going down a residental area, I pushed in the clutch, put in 2nd and made a left dirt down a dirt road. The whole car shutoff and we could not get it started, luckly his house was only a block away so we pushed it home. Check engine light was on, the code was Crankshaft Position Sensor.

So my question is, do I just replace the sensor. I already saw it is going to be a $$#% to get the timing cover off. Or did the car offically crank walk and should I just pull the engine. I can't afford a new 6 bolt engine but if it did crank walk and there is no fix I guess I have no choice.

Thanks!

 

[gofast63]

Sorry this thread is technically a year old now, but is it necessary/appropriate to check the endplay whenever replacing the CPS?





I thought this was ontopic enough to belong in this thread instead of creating a new one and getting flamed for not searching.

You don't have to.

 

[lewishamilton]

You don't have to.

And that's that? Does anybody else have anything to add? How do you know when this is or isn't necessary?

 

[gofast63]

And that's that? Does anybody else have anything to add? How do you know when this is or isn't necessary?

How many miles do you have? If you have the time to do it then do so. It's always good to check and inspect your engine. But your going to have to remove your oil pan to do so.

 

[BogusSVO]

You do not have to pull the oil pan to check crank end play.

Any time you are down around the balancer you can quick check it.

shove the balancer towards the trans side of the engine, then pull it towards you, you should feel very little movement. Spec is .0098, I just call it .010

If there is a question in your mind after the "quick check" then get out the magnetic base and dial indicator and measure it properly.

BTW, if the end play is .030 or better, you will here a "clunk" when you pull on the balancer.

 

[DSM_GSX01]

My car had this pop up for a code. I got a used crank sensor put it on and fired it up.

I say get a new sensor if its damaged like mine was get anew or used on and put it on call it a day. But if it jumped teeth on cam gears you could of hit valves.

 

[lewishamilton]

How many miles do you have?

110k. stock engine from the factory.

My car had this pop up for a code. I got a used crank sensor put it on and fired it up.

I say get a new sensor if its damaged like mine was get anew or used on and put it on call it a day. But if it jumped teeth on cam gears you could of hit valves.

My car too has the code, and am in the process of replacing the sensor.

I don't believe it jumped timing. The Gates Racing belt is tight and brand new, and shop installed.



But I'll do the pull test tonight when I get home to see if I need to pick up a Dial Indicator from Harbor Freight.