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| 1990 bonneville will not idle http://www.pontiacbonnevilleclub.com/forum/1987/topic50996.html |
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| Author: | Frustrated1 [ Sun Sep 17, 2017 1:15 pm ] |
| Post subject: | 1990 bonneville will not idle |
Hi new to club. I inherited a 1990 bonneville from MY grandparents who have past. Drove car from Tennessee to Illinois. Car then died. Have a code 42. Found that out after I pulled the dash and replaced ck engine bulb. I have replaced the icm tps camshaft sensor and crankshaft sensor. Hope crankshaft sensor is in right. Watched a lot of videos. Don't know where to go now. Would really like to keep car it's sentimental. Thanks in advance for the help. |
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| Author: | Frustrated1 [ Thu Sep 21, 2017 1:24 pm ] |
| Post subject: | Re: 1990 bonneville will not idle |
Please anyone any help.Im at a loss on what to do. |
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| Author: | J Wikoff [ Thu Sep 21, 2017 4:55 pm ] |
| Post subject: | Re: 1990 bonneville will not idle |
It's not unheard of for the wiring leading to the crank sensor to get worn through and short out. Check out its harness for a couple feet. You'll probably destroy the loom in doing so, so have some handy. |
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| Author: | Frustrated1 [ Thu Sep 21, 2017 5:39 pm ] |
| Post subject: | Re: 1990 bonneville will not idle |
Sorry didn't post that I already replaced the harness with a new one. This is driving me crazy lol |
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| Author: | ddalder [ Thu Sep 21, 2017 6:26 pm ] |
| Post subject: | Re: 1990 bonneville will not idle |
I'd suggest using loom from the engine compartment of a car at a wrecker. Any of the junk I've ever bought at parts stores has proven it's for interior use only and melted into a blob of plastic anywhere near the engine. I continue my quest for the "real" stuff (at a reasonable price). |
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| Author: | Frustrated1 [ Thu Sep 21, 2017 7:37 pm ] |
| Post subject: | Re: 1990 bonneville will not idle |
I understand what you are saying and tend to agree bit the harness is brand new. Only ran car once. Does the crankshaft sensor have anything to do with this symptom? |
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| Author: | RJolly87 [ Fri Sep 22, 2017 12:53 am ] |
| Post subject: | Re: 1990 bonneville will not idle |
Will the car run if the throttle is held open? If so, how well does it run? |
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| Author: | Frustrated1 [ Fri Sep 22, 2017 10:36 am ] |
| Post subject: | Re: 1990 bonneville will not idle |
It runs ok when I hold the pedal at a higher rpm.Sometimes it sputters a little but otherwise it's good. I drove the car from Tennessee to Illinois with no problems. |
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| Author: | RJolly87 [ Fri Sep 22, 2017 7:24 pm ] |
| Post subject: | Re: 1990 bonneville will not idle |
I know it's not related to code 42, but it may be good to check fuel pressure and behaviors to rule it out as a problem. For 42, you may try checking the ground under the ICM. Sometimes I wonder if this code can set if the engine suffers from stalling and the ICM and ECM don't hand off to eachother properly. Do you have a spare ECM kicking around? |
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| Author: | Frustrated1 [ Sat Sep 23, 2017 8:10 am ] |
| Post subject: | Re: 1990 bonneville will not idle |
No don't have a extra ecm. And I already checked the ground. Don't know how much more I can change lol |
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| Author: | Frustrated1 [ Sun Sep 24, 2017 10:38 pm ] |
| Post subject: | Re: 1990 bonneville will not idle |
If you or anyone has a run that's good let me know. |
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