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FiatRG

New member

Post by FiatRG »

Hello,

Glad to have found a Fiat enthusiast forum, looking forward to gathering as much information as possible. Helping a family member revive a 1981 Spider 2000 that has a lot of sentimental value to him. 108k on the clock.

Car runs and he enjoys driving it daily. It's suffering from the rough idle problem and after some reading it seems I should check his AFM door movement range. If that seems to be ok presume the next step would be the injectors? Car has recently had some general maintenance done, plugs, seals, gaskets, hoses, t-stat etc.

I believe after we resolve the idle issue I will be tackling the suspension as all shocks seem to be blown. Should I knock out control arms, bushings, etc while were at it? What are the popular suspension set ups for this platform? OEM type replacements?

Goal of the build is reliability with a bump in over all performance. If his wife is ever comfortable driving the car I have succeeded. :D
76was124
Patron 2019
Patron 2019
Posts: 620
Joined: Sun May 16, 2010 4:43 pm
Your car is a: 1981 Spider 2000
Location: Detroit Area

Re: New member

Post by 76was124 »

FiatRG wrote: should check his AFM door movement range.
Welcome!

Yes could be the Afm, but could be other things as well. There is a good step by step Tune Up procedure for Bosch fuel injection system in the forum by Brad Artigue. It is in this thread http://fiatspider.com/f08/viewtopic.php ... ue#p208421

Regarding the rough idle, if it's only when cold, it likely the AAR (Auxiliary air regulator). It's takes air around (bypasses) the throttle plate to raise the idle speed until the engine gets up to temperature. You can find some good posts about the auxiliary air regulator if you search the posts.

If it idles rough all the time, it could be an air leak in one of the hoses. Check the large air hose especially the underside of the small tube that branches off to the AAR.

Has it been sitting for years? If so cleaning the injectors wouldn't be a bad idea, but some simpler checks like above may be an easier place to start.

It can be a journey, so let us know what you find.
Current 81 Spider 2000
Previous 76 Spider
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RRoller123
Patron 2020
Patron 2020
Posts: 8179
Joined: Sun Nov 13, 2011 2:04 pm
Your car is a: 1980 FI SPIDER 2000
Location: SAGAMORE BEACH, MA USA

Re: New member

Post by RRoller123 »

Welcome aboard! You will find plenty of knowledgeable and friendly people here.

Here is a thread on how to post pictures directly to the forum:

http://www.fiatspider.com/f08/viewtopic.php?f=4&t=21014

And here is another picture-posting thread:

http://www.fiatspider.com/f08/viewtopic ... 12&t=23084

And here is a link to a map of Spider owner’s locations. Many forum members have listed their locations.

https://www.zeemaps.com/map?group=191825

Pete
'80 FI Spider 2000
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/STD BED
2002 Edgewater 175CC 80HP 4-Stroke Yamaha
2003 Jaguar XK8
2003 Jaguar XKR
2021 Jayco 22RB
2019 Bianchi Torino Bicycle
FiatRG

Re: New member

Post by FiatRG »

76was124 wrote:
FiatRG wrote: should check his AFM door movement range.
Welcome!

Yes could be the Afm, but could be other things as well. There is a good step by step Tune Up procedure for Bosch fuel injection system in the forum by Brad Artigue. It is in this thread http://fiatspider.com/f08/viewtopic.php ... ue#p208421

Regarding the rough idle, if it's only when cold, it likely the AAR (Auxiliary air regulator). It's takes air around (bypasses) the throttle plate to raise the idle speed until the engine gets up to temperature. You can find some good posts about the auxiliary air regulator if you search the posts.

If it idles rough all the time, it could be an air leak in one of the hoses. Check the large air hose especially the underside of the small tube that branches off to the AAR.

Has it been sitting for years? If so cleaning the injectors wouldn't be a bad idea, but some simpler checks like above may be an easier place to start.

It can be a journey, so let us know what you find.

Awesome 76, thank you!

Will follow tune up procedure, check AAR, service injectors, and check hose. Will follow up on the results and/or if I run in to any issues. Feedback and welcome is appreciated!!
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